A new lizard assemblage from the earliest eocene (Zone Wa0) of the bighorn basin, wyoming, USA: Biogeography during the warmest interval of the cenozoic

References

• Aubry , M.‐P. , Lucas , S. G. and Berggren , W. A. , eds. 1998 . Late PalEocene‐Early Eocene Climatic and Biotic Events in the Marine and Terrestrial Records. , 513 New York : Columbia University Press .
   Google Scholar
• Augé , M. 1987 . Confirmation de la présence d'Iguanidae (Reptilia, Lacertilia) dans l'Eocene européen . Comptes Rendus de l'Académie des Sciences, Serie II , 305 : 633 – 636 .
   Google Scholar
• _____ . 1990a . La faune de lézards et d'Amphisbenes (Reptilia, Squamata) du gisement de Dormaal (Belgique, Eocene inférieur) . Bulletin de l'Institut Royal des Sciences Naturelles de Belgique, Sciences de la Terre , 60 : 161 – 173 .
   Google Scholar
• _____ . 1990b . La faune de lezards et d'amphisbaenes de l'Éocéne inférieur de Condé‐en‐Brie (France) . Bulletin du Museum national d'Histoire Naturelle, Série 4, section C , 12 : 111 – 141 .
   Google Scholar
• _____ . 2003 . La faune de Lacertilia (Reptilia, Squamata) de l'Eocéne inférieur de Prémontré (Bassin de Paris, France) . Geodiversitas , 25 : 539 – 574 .
   Google Scholar
• _____ . 2005 . Évolution des lézards du Paléogène en Europe . Mémoires du Muséum National d'Histoire Naturelle , 192 : 1 – 369 .
   Google Scholar
• Bahl , K. N. 1937 . Skull of Varanus monitor (Linn.) . Records of the Indian Museum , 39 : 133 – 174 .
   Google Scholar
• Baird , S. F. 1858 . Description of new genera and species of North American lizards in the Museum of the Smithsonian Institution . Proceedings of the Academy of Natural Sciences of Philadelphia , 1858 : 253 – 256 .
   Google Scholar
• Balsai , M. J. 2001 . The Phylogenetic Position of Palaeosaniwa and the Early Evolution of the Platynotan (Varanoid) Anguimorphs. , 340 The University of Pennsylvania . Unpublished PhD thesis
   Google Scholar
• Barnosky , A. D. , Rouse , T. I. , Hadly , E. A. , Wood , D. L. , Keesing , F. L. and Schmidt , V. A. 1993 . “ Comparison of mammalian response to glacial‐interglacial transitions in the middle and late Pleistocene ” . In Palaeoecology and Palaeoenvironments of late Cenozoic Mammals: Tributes to the Career of C.S. (Rufus) Churcher. , Edited by: Stewart , K. M. and Seymour , K. L. 16 – 33 . Toronto : University of Toronto Press .
   Google Scholar
• Bartels , W. S. 1983 . A transitional PalEocene‐Eocene reptile fauna from the Bighorn Basin, Wyoming . Herpetologica , 39 : 359 – 374 .
   Web of Science ®Google Scholar
• Beard , K. C. 1998 . “ East of Eden: Asia as an important center of taxonomic origination in mammalian evolution ” . In Dawn of the Age of Mammals in Asia. Bulletin of the Carnegie Museum of Natural History , Edited by: Beard , K. C. and Dawson , M. R. 5 – 39 . Pittsburgh, PA : Carnegie Museum of Natural History . no. 34
   Google Scholar
• _____ . 2008 . The oldest North American primate and mammalian biogeography during the Paleocene‐Eocene Thermal Maximum . Proceedings of the National Academy of Science, USA , 105 : 3815 – 3818 .
   PubMed Web of Science ®Google Scholar
• _____ and Dawson , M. R. 1999 . Intercontinental dispersal of Holarctic land mammals near the PalEocene/Eocene boundary: paleogeographic, paleoclimatic and biostratigraphic implications . Bulletin de la Société Géologique de France , 170 : 697 – 706 .
   Google Scholar
• Bell , C. J. and Whistler , D. P. 1996 . Fossil remains of the legless lizard, Anniella Gray, 1852 from late Pleistocene deposits at Rancho la Brea, California . Bulletin of the Southern California Academy of Sciences , 95 : 99 – 102 .
   Google Scholar
• _____ , Head , J. J. and Mead , J. I. 2004 . “ Synopsis of the herpetofauna from Porcupine Cave ” . In Biodiversity Response to Climate Change in the Middle Pleistocene: The Porcupine Cave Fauna from Colorado. , Edited by: Barnosky , A. D. 117 – 126 . Berkeley, CA : University of California Press .
   Google Scholar
• Berman , D. S. 1973 . Spathorhynchus fossorium a middle Eocene amphisbaenian (Reptilia) from Wyoming . Copeia , 1973 : 704 – 721 .
   Google Scholar
• Bever , G. S. 2005 . Variation in the ilium of North American Bufo (Lis‐samphibia; Anura) and its implications for species‐level identification of fragmentary anuran fossils . Journal of Vertebrate Paleontology , 25 : 548 – 560 .
   Web of Science ®Google Scholar
• Bhullar , B.‐A. S. and Smith , K. T. 2008 . Helodermatid lizard from the Miocene of Florida, the evolution of the dentary in Helodermatidae, and comments on dentary morphology in Varanoidea . Journal of Herpetology , 42 : 286 – 302 .
   Web of Science ®Google Scholar
• Borsuk‐Białynicka , M. 1984 . Anguimorphans and related lizards from the Late Cretaceous of the Gobi Desert, Mongolia . Palaeontologia Polonica , 46 : 5 – 105 .
   Google Scholar
• _____ and Moody , S. M. 1984 . Priscagaminae, a new subfamily of the Agamidae (Sauria) from the Late Cretaceous of the Gobi Desert . Acta Palaeontologica Polonica , 29 : 51 – 81 .
   Google Scholar
• Bowen , G. J. , Clyde , W. C. , Koch , P. L. , Ting , S. , Alroy , J. , Tsubamoto , T. , Wang , Y. and Wang , Y. 2002 . Mammalian dispersal at the Paleocene/Eocene boundary . Science , 295 : 2062 – 2065 .
   PubMed Web of Science ®Google Scholar
• Brown , R. W. 1956 . Composition of Scientific Words , (revised edn) , 882 Washington, DC : Smithsonian Institution Press .
   Google Scholar
• Camp , C. L. 1923 . Classification of the lizards . Bulletin of the American Museum of Natural History , 48 : 289 – 481 .
   Google Scholar
• Cifelli , R. L. , Schaff , C. R. and McKenna , M. C. 1989 . The relationships of the Arctostylopidae (Mammalia): new data and interpretations . Bulletin of the Museum of Comparative Zoology , 152 : 1 – 44 .
   Google Scholar
• Clyde , W. C. and Gingerich , P. D. 1998 . Mammalian community response to the latest PalEocene thermal maximum: an isotaphonomic study in the northern Bighorn Basin, Wyoming . Geology , 26 : 1011 – 1014 .
   Web of Science ®Google Scholar
• Coe , W. R. and Kunkel , B. W. 1906 . Studies on the California limbless lizard, Anniella . Transactions of the Connecticut Academy of Arts and Sciences , 12 : 349 – 403 .
   Google Scholar
• Conrad , J. L. 2004 . Skull, mandible, and hyoid of Shinisaurus crocodilurus Ahl (Squamata, Anguimorpha) . Zoological Journal of the Linnean Society , 141 : 399 – 434 .
   Web of Science ®Google Scholar
• _____ , Rieppel , O. and Grande , L. 2007 . Green River (Eocene) polychrotid (Squamata: Reptilia) and a re‐examination of iguanian systematics . Journal of Paleontology , 81 : 1365 – 1373 .
   Web of Science ®Google Scholar
• Cooper , J. S. , Poole , D. F. G. and Lawson , R. 1970 . The dentition of agamid lizards with special reference to tooth replacement . Journal of Zoology, London , 162 : 85 – 98 .
   Web of Science ®Google Scholar
• Cope , E. D. 1866 . Fifth contribution to the herpetology of Tropical America . Proceedings of the Academy of Natural Sciences of Philadelphia , 1866 : 317 – 323 .
   Google Scholar
• _____ . 1892 . The osteology of the Lacertilia . Proceedings of the American Philosophical Society , 30 : 185 – 221 .
   Google Scholar
• _____ . 1898 . The crocodilians, lizards, and snakes of North America . Report of the U.S. National Museum , 1898 : 153 – 1270 .
   Google Scholar
• Darwin , C. 1859 . On the Origin of Species by Means of Natural Selection, or the Preservation of Favourable Races in the Struggle for Life. , London : John Murray .
   Google Scholar
• Davis , M. B. 1981 . “ Quaternary history and the stability of forest communities ” . In Forest Succession: Concepts and Application. , Edited by: West , D. C. , Shugart , H. H. and Botkin , D. B. 132 – 153 . New York : Springer .
   Google Scholar
• _____ and Shaw , R. G. 2001 . Range shifts and adaptive responses to Quaternary climate change . Science , 292 : 673 – 679 .
   PubMed Web of Science ®Google Scholar
• Eldredge , N. 1985 . Time Frames: The Rethinking of Darwinian Evolution and the Theory of Punctuated Equilibria. , 240 New York : Simon & Schuster .
   Google Scholar
• Estes , R. 1964 . Fossil vertebrates from the Late Cretaceous Lance Formation, eastern Wyoming . University of California Publications in Geological Sciences , 49 : 1 – 187 .
   Google Scholar
• _____ . 1965 . Notes on some PalEocene lizards . Copeia , 1965 : 104 – 106 .
   Google Scholar
• _____ . 1970 . Origin of the Recent North American lower vertebrate fauna: an inquiry into the fossil record . Forma et Functio , 3 : 139 – 163 .
   Google Scholar
• _____ . 1975 . Lower vertebrates from the Fort Union Formation, late Paleocene, Big Horn Basin, Wyoming . Herpetologica , 31 : 365 – 385 .
   Google Scholar
• _____ . 1976 . Middle PalEocene lower vertebrates from the Tongue River Formation, southeastern Montana . Journal of Paleontology , 50 : 500 – 520 .
   Web of Science ®Google Scholar
• _____ . 1983 . Sauria terrestria, Amphisbaenia. Handbuch der Palaoher‐petologie , Vol. 10A , 249 Stuttgart : Gustav Fischer Verlag .
   Google Scholar
• _____ and Báez , A. 1985 . “ Herpetofaunas of North and South America during the Late Cretaceous and Cenozoic: evidence for interchange? ” . In The Great American Interchange. Topics in Geobiology , Edited by: Stehli , F. G. and Webb , S. D. vol. 4 , 139 – 197 . New York : Plenum Press .
   Google Scholar
• _____ , De Queiroz , K. and Gauthier , J. A. 1988 . “ Phylogenetic relationships within Squamata ” . In Phylogenetic Relationships of the Lizard Families , Edited by: Estes , R. and Pregill , G. K. 119 – 281 . Stanford, CA : Stanford University Press .
   Google Scholar
• Etheridge , R. 1959 . The Relationships of the Anoles (Reptilia:Sauria:Iguanidae), an Interpretation Based on Skeletal Morphology. , 236 The University of Michigan . Unpublished PhD thesis
   Google Scholar
• _____ and De Queiroz , K. 1988 . “ A phylogeny of Iguanidae ” . In Phylogenetic Relationships of the Lizard Families. , Edited by: Estes , R. and Pregill , G. K. 283 – 367 . Stanford, CA : Stanford University Press .
   Google Scholar
• Farley , K. A. and Eltgroth , S. F. 2003 . An alternative age model for the PalEocene‐Eocene thermal maximum using extraterrestrial He‐3 . Earth and Planetary Science Letters , 208 : 135 – 148 .
   Web of Science ®Google Scholar
• FAUNMAP Working Group. 1996 . Spatial response of mammals to late Quaternary environmental fluctuations . Science , 272 : 1601 – 1606 .
   PubMed Web of Science ®Google Scholar
• Fejérváry , G. J. de . 1935 . Further contributions to a monograph of the Megalanidae and the fossil Varanidae ‐ with notes on recent varanians . Annales Musei Nationalis Hungarici, Pars Zoologica , 29 : 1 – 130 .
   Google Scholar
• Fine , P. V. A. and Ree , R. H. 2006 . Evidence for a time‐integrated species‐area effect on the latitudinal gradient in tree diversity . American Naturalist , 168 : E796 – E804 .
   PubMed Web of Science ®Google Scholar
• Flynn , J. J. and Novacek , M. J. 1984 . Early Eocene vertebrates from Baja California: evidence for intracontinental age correlations . Science , 224 : 151 – 153 .
   PubMed Web of Science ®Google Scholar
• Frost , D. R. 1992 . Phylogenetic analysis and taxonomy of the Tropidurus group of lizards (Iguania: Tropiduridae) . American Museum Novitates , 3033 : 1 – 68 .
   Google Scholar
• _____ and Etheridge , R. 1989 . A phylogenetic analysis and taxonomy of iguanian lizards (Reptilia: Squamata) . Miscellaneous Publications, University of Kansas Museum of Natural History , 81 : 1 – 65 .
   Google Scholar
• _____ , _____ , Janies , D. and Titus , T. A. 2001 . Total evidence, sequence alignment, evolution of polychrotid lizards, and a reclassification of the Iguania (Squamata: Iguania) . American Museum Novitates , 3343 : 1 – 38 .
   Google Scholar
• Gans , C. 1957 . “Anguimorph” tooth replacement in Amphisbaena alba Linnaeus, 1758, and A. fuliginosa Linnaeus, 1758 (Reptilia: Amphis‐baenidae) . Breviora, Museum of Comparative Zoology , 70 : 1 – 12 .
   Google Scholar
• _____ . 1960 . Studies on amphisbaenids (Amphisbaenia, Reptilia). 1. A taxonomic revision of the Trogonophinae, and a functional interpretation of the amphisbaenid adaptive pattern . Bulletin of the American Museum of Natural History , 119 : 133 – 204 .
   Google Scholar
• _____ . 1978 . The characteristics and affinities of the Amphisbaenia . Transactions of the Zoological Society of London , 34 : 347 – 416 .
   Google Scholar
• Gao , K. and Fox , R. C. 1996 . Taxonomy and evolution of Late Cretaceous lizards (Reptilia: Squamata) from western Canada . Bulletin of the Carnegie Museum of Natural History , 33 : 1 – 107 .
   Google Scholar
• _____ and Norell , M. A. 2000 . Taxonomic composition and systematics of Late Cretaceous lizard assemblages from Ukhaa Tolgod and adjacent localities, Mongolian Gobi Desert . Bulletin of the American Museum of Natural History , 249 : 1 – 118 .
   Google Scholar
• Gauthier , J. A. 1980 . Anniella (Sauria; Anguidae) from the Miocene of California . PaleoBios , 31 : 1 – 7 .
   Google Scholar
• _____ . 1982 . Fossil xenosaurid and anguid lizards from the early Eocene Wasatch Formation, southeast Wyoming, and a revision of the An‐guioidea . Contributions to Geology, University of Wyoming , 21 : 7 – 54 .
   Google Scholar
• _____ , Estes , R. and De Queiroz , K. 1988 . “ A phylogenetic analysis of Lepidosauromorpha ” . In Phylogenetic Relationships of the Lizard Families. , Edited by: Estes , R. and Pregill , G. K. 15 – 98 . Stanford, CA : Stanford University Press .
   Google Scholar
• Gilmore , C. W. 1928 . Fossil lizards of North America . Memoirs of the National Academy of Sciences , 22 : 1 – 201 .
   Google Scholar
• _____ . 1942a . PalEocene faunas of the Polecat Bench Formation, Park County, Wyoming. Part II. Lizards . Proceedings of the American Philosophical Society , 85 : 159 – 167 .
   Google Scholar
• _____ . 1942b . Osteology of Polyglyphanodon, an Upper Cretaceous lizard from Utah . Proceedings of the United States National Museum , 92 : 229 – 265 .
   Google Scholar
• _____ . 1943 . Fossil lizards of Mongolia . Bulletin of the American Museum of Natural History , 81 : 361 – 384 .
   Google Scholar
• _____ and Jepsen , G. L. 1945 . A new Eocene lizard from Wyoming . Journal of Paleontology , 19 : 30 – 34 .
   Google Scholar
• Gingerich , P. D. 1985 . “ South American mammals in the PalEocene of North America ” . In The Great American Interchange. Topics in Geobiology , Edited by: Stehli , F. G. and Webb , S. D. 123 – 137 . New York : Plenum Press . No. 4
   Google Scholar
• _____ . 1989 . New earliest Wasatchian mammalian fauna from the Eocene of northwestern Wyoming: composition and diversity in a rarely sampled high‐floodplain assemblage . University of Michigan Papers on Paleontology , 28 : 1 – 97 .
   Google Scholar
• _____ . 2001 . Paleocene‐Eocene stratigraphy and biotic change in the Bighorn and Clarks Fork Basins, Wyoming. University of Michigan Papers on Paleontology , 198 Ann Arbor, MN : University of Michigan Museum of Paleontology . No. 33
   Google Scholar
• _____ . 2003 . “ Mammalian responses to climate change at the PalEocene‐Eocene boundary: Polecat Bench record in the northern Bighorn Basin, Wyoming ” . In Causes and Consequences of Globally Warm Climates in the Early Paleogene. Geological Society of America Special Paper , Edited by: Wing , S. L. , Gingerich , P. D. , Schmitz , B. and Thomas , E. 463 – 478 . 614 Boulder, CO : Geological Society of America . No. 369
   Google Scholar
• _____ . 2006 . Environment and evolution through the PalEocene‐Eocene thermal maximum . Trends in Ecology and Evolution , 21 : 246 – 253 .
   PubMed Web of Science ®Google Scholar
• _____ and Rose , K. D. 1977 . Preliminary report on the American Clark Fork mammal fauna, and its correlation with similar faunas in Europe and Asia . Géobios, Mémoire spécial , 1 : 39 – 45 .
   Google Scholar
• Glor , R. E. , Losos , J. B. and Larson , A. 2005 . Out of Cuba: overwater dispersal and speciation among lizards in the Anolis carolinensis subgroup . Molecular Ecology , 14 : 2419 – 2432 .
   PubMed Web of Science ®Google Scholar
• Godinot , M. , de Lapparent and De Broin , F. 2003 . “ Arguments for a mammalian and reptilian dispersal from Asia to Europe during the Paleocene‐Eocene boundary interval ” . In Distribution and Migration of Tertiary Mammals in Eurasia: a Volume in Honour of Hans de Bruijn. , Edited by: Reumer , J. W. F. and Wessels , W . 255 – 275 . Rotterdam : DEINSEA .
   Google Scholar
• Goldberg , E. E. , Roy , K. , Lande , R. and Jablonski , D. 2005 . Diversity, endemism, and age distributions in macroevolutionary sources and sinks . American Naturalist , 165 : 623 – 633 .
   PubMed Web of Science ®Google Scholar
• Good , D. A. 1987 . A phylogenetic analysis of cranial osteology in the gerrhonotine lizards . Journal of Herpetology , 21 : 285 – 297 .
   Web of Science ®Google Scholar
• _____ . 1988 . Phylogenetic relationships among gerrhonotine lizards: an analysis of external morphology . University of California Publications in Zoology , 121 : 1 – 139 .
   Google Scholar
• Gray , J. E. 1825 . A synopsis of the genera of Reptiles and Amphibia, with a description of some new species . Annals of Philosophy (Series 2) , 10 : 193 – 217 .
   Google Scholar
• _____ . 1827 . A synopsis of the genera of saurian reptiles, in which some new genera are indicated and others reviewed by actual examination . The Philosophical Magazine, or Annals of Chemistry, Mathematics, Astronomy, Natural History, and General Science , 2 : 54 – 58 .
   Google Scholar
• Gunnell , G. F. , Bartels , W. S. and Gingerich , P. D. 1993 . “ Paleocene‐Eocene boundary in continental North America: biostratigraphy and geochronology, northern Bighorn Basin, Wyoming ” . In Vertebrate Paleontology in New Mexico. New Mexico Museum of Natural History and Science, Bulletin 2. , Edited by: Lucas , S. G. and Zidek , J. 137 – 144 . Albuquerque, NM : New Mexico Museum of Natural History and Science .
   Google Scholar
• Harrington , G. J. 2001 . Impact of Paleocene/Eocene greenhouse warming on North American paratropical forests . Palaios , 16 : 266 – 278 .
   Web of Science ®Google Scholar
• _____ . 2003 . “ Geographic patterns in the floral response to Paleocene‐Eocene warming ” . In 2003. Causes and Consequences of Globally Warm Climates in the Early Paleogene , Geological Society of America Special Paper No. 369 Edited by: Wing , S. L. , Gingerich , P. D. , Schmitz , B. and Thomas , E. 381 – 383 . Boulder, CO : Geological Society of America .
   Google Scholar
• Hawkins , B. A. , Diniz‐Filho , J. A. F. and Soeller , S. A. 2005 . Water links the historical and contemporary components of the Australian bird diversity gradient . Journal of Biogeography , 32 : 1035 – 1042 .
   Web of Science ®Google Scholar
• _____ , _____ , Jaramillo , C. A. and Soeller , S. A. 2006 . Post‐Eocene climate change, niche conservatism, and the latitudinal diversity gradient of New World birds . Journal of Biogeography , 33 : 770 – 780 .
   Web of Science ®Google Scholar
• _____ , _____ , _____ and _____ . 2007 . Climate, niche conservatism, and the global bird diversity gradient . American Naturalist , 170 : S16 – S27 .
   PubMed Web of Science ®Google Scholar
• Hecht , M. K. 1956 . A new xantusiid lizard from the Eocene of Wyoming . American Museum Novitates , 1774 : 1 – 8 .
   Google Scholar
• Hedges , S. B. , Bezy , R. L. and Maxson , L. R. 1991 . Phylogenetic relationships and biogeography of xantusiid lizards, inferred from mitochondrial DNA sequences . Molecular Biology and Evolution , 8 : 767 – 780 .
   PubMed Web of Science ®Google Scholar
• Hoffstetter , R. 1957 . Un Saurien hélodermatidé (Eurheloderma gallicum nov. gen. et sp.) dans la faune fossile des phosphorites du Quercy . Bulletin de la Société Géologique de France, Série 6 , 7 : 775 – 786 .
   Google Scholar
• Holman , J. A. 1972 . Herpetofauna of the Calf Creek local fauna (lower Oligocene: Cypress Hills Formation) of Saskatchewan . Canadian Journal of Earth Sciences , 9 : 1612 – 1631 .
   Web of Science ®Google Scholar
• _____ . 1995 . Pleistocene Amphibians and Reptiles in North America. , 243 New York : Oxford University Press .
   Google Scholar
• _____ . 2000 . Fossil Snakes of North America: Origin, Evolution, Distribution, Paleoecology. , 357 Bloomington, IN : Indiana University Press .
   Google Scholar
• Holroyd , P. A. , Hutchison , J. H. and Strait , S. G. 2001 . “ Turtle diversity and abundance through the lower Eocene Willwood Formation of the southern Bighorn Basin ” . In Paleocene‐Eocene Stratigraphy and Biotic Change in the Bighorn and Clarks Fork Basins, Wyoming , University of Michigan Papers on Paleontology No. 33 Edited by: Gingerich , P. D. 97 – 107 . Ann Arbor, MN : University of Michigan Museum of Paleontology .
   Google Scholar
• Hooker , J. J. and Dashzeveg , D. 2003 . “ Evidence for direct mammalian faunal interchange between Europe and Asia near the Paleocene‐Eocene boundary ” . In 2003. Causes and Consequences of Globally Warm Climates in the Early Paleogene , Geological Society of America Special Paper No. 369 Edited by: Wing , S. L. , Gingerich , P. D. , Schmitz , B. and Thomas , E. 479 – 500 . Boulder, CO : Geological Society of America .
   Google Scholar
• Hutchison , J. H. 1980 . Turtle stratigraphy of the Willwood Formation, Wyoming: preliminary results . University of Michigan Papers on Paleontology , 24 : 115 – 118 .
   Google Scholar
• _____ . 1998 . “ Turtles across the PalEocene/Eocene Epoch boundary in west‐central North America ” . In Late Paleocene‐Early Eocene Climatic and Biotic Events in the Marine and Terrestrial Records. , Edited by: Aubry , M.‐P. , Lucas , S. G. and Berggren , W. A. 401 – 408 . New York : Columbia University Press .
   Google Scholar
• IPCC (International Panel on Climate Change) Working Group II. 2007 . Climate Change 2007: Impacts, Adaptation and Vulnerability. Working Group II Contribution to he Intergovernmental Panel on Climate Change. Fourth Assessmnet Report. Summary for Policymakers. , 23 Geneva : IPCC Secreteriat . Available at: http://www.meteo.bg/meteorology/SPM13apr07.pdf
   Google Scholar
• Jablonski , D. 1993 . The tropics as a source of evolutionary novelty through geological time . Nature , 364 : 142 – 144 .
   Web of Science ®Google Scholar
• _____ and Sepkoski , J. J. Jr. 1996 . Paleobiology, community ecology, and scales of ecological pattern . Ecology , 77 : 1367 – 1378 .
   PubMed Web of Science ®Google Scholar
• _____ , Roy , K. and Valentine , J. W. 2006 . Out of the tropics: evolutionary dynamics of the latitudinal diversity gradient . Science , 314 : 102 – 106 .
   PubMed Web of Science ®Google Scholar
• Jackman , T. R. , Larson , A. , De Queiroz , K. and Losos , J. B. 1999 . Phylogenetic relationships and tempo of early diversification in Anolis lizards . Systematic Biology , 48 : 254 – 285 .
   Web of Science ®Google Scholar
• Jepsen , G. L. and Woodburne , M. O. 1969 . Paleocene hyracothere from Polecat Bench Formation, Wyoming . Science , 164 : 543 – 547 .
   PubMed Web of Science ®Google Scholar
• Kearney , M. 2003 . Systematics of the Amphisbaenia (Lepidosauria: Squamata) based on morphological evidence from Recent and fossil forms . Herpetological Monographs , 17 : 1 – 74 .
   Web of Science ®Google Scholar
• _____ and Stuart , B. L. 2004 . Repeated evolution of limblessness and digging heads in worm lizards revealed by DNA from old bones. . Proceedings of the Royal Society of London , B271 : 1677 – 1683 .
   Google Scholar
• _____ , Maisano , J. A. and Rowe , T. 2005 . Cranial anatomy of the extinct amphisbaenian Rhineura hatcherii (Squamata, Amphisbaenia) based on high‐resolution X‐ray computed tomography . Journal of Morphology , 264 : 1 – 33 .
   PubMed Web of Science ®Google Scholar
• Klemmer , K. 1957 . Untersuchungen zur Osteologie und Taxonomie der europäischen Mauereidechsen . Abhandlungen der Senckenbergischen naturforschenden Gesellschaft , 496 : 1 – 56 .
   Google Scholar
• Krause , D. W. and Maas , M. C. 1990 . “ The biogeographic origins of late Paleocene‐early Eocene mammalian immigrants to the Western Interior of North America ” . In Dawn of the Age of Mammals in the Northern Part of the Rocky Mountain Interior, North America , Geological Society of America Special Paper No. 243 Edited by: Bown , T. M. and Rose , K. D. 71 – 105 . Boulder, CO : Geological Society of America .
   Google Scholar
• Lang , M. 1989 . Phylogenetic and biogeographic patterns of basiliscine iguanians (Reptilia: Squamata: “Iguanidae") . Bonner zoologische Monographien , 28 : 1 – 172 .
   Google Scholar
• _____ . 1991 . Generic relationships within Cordyliformes (Reptilia: Squamata) . Bulletin de l'Institut Royal des Sciences Naturelles de Belgique , 61 : 121 – 188 .
   Google Scholar
• Lécuru , S. 1968 . Myologie et innervation du membre antérieur des lacertiliens . Mémoires du Muséum national d'Histoire naturelle, Série A , 48 : 127 – 215 .
   Google Scholar
• Leidy , J. 1870 . Descriptions of Emys, Saniwa etc . Proceedings of the Academy of Natural Sciences of Philadelphia , 1870 : 123 – 124 .
   Google Scholar
• Linnaeus , C. 1758 . Systema naturae. , (10th edn) , Vol. 1 , 824 Stockholm : Laurentius Salvius .
   Google Scholar
• Macey , J. R. , Schulte , J. A. , Larson , A. , Tuniyev , B. S. , Orlov , N. and Papenfuss , T. J. 1999 . Molecular phylogenetics, tRNA evolution, and historical biogeography in anguid lizards and related taxonomic families . Molecular Phylogenetics and Evolution , 12 : 250 – 272 .
   PubMed Web of Science ®Google Scholar
• MacLean , W. P. 1974 . Feeding and locomotor mechanisms of teiid lizards: functional morphology and evolution . Papéis Avulsos de Zoologia , 27 : 179 – 213 .
   Google Scholar
• Magioncalda , R. , Dupuis , C. , Smith , T. , Steurbaut , E. and Gingerich , P. D. 2004 . Paleocene‐Eocene carbon isotope excursion in organic carbon and pedogenic carbonate: direct comparison in a continental stratigraphic section . Geology , 32 : 553 – 556 .
   Web of Science ®Google Scholar
• Maisano , J. A. , Kearney , M. and Rowe , T. 2006 . Cranial anatomy of the spade‐headed amphisbaenian Diplometopon zarudnyi (Squamata, Amphsibaenia) based on high‐resolution x‐ray computed tomography . Journal of Morphology , 267 : 70 – 102 .
   PubMed Web of Science ®Google Scholar
• Marsh , O. C. 1872 . Preliminary description of new Tertiary reptiles . American Journal of Science, Series 3 , 4 : 298 – 309 .
   Google Scholar
• Martin , P. R. , Bonier , F. and Tewksbury , J. J. 2007 . Revisiting Jablonski (1993): cladogenesis and range expansion explain latitudinal variation in taxonomic richness . Journal of Evolutionary Biology , 20 : 930 – 936 .
   PubMed Web of Science ®Google Scholar
• Matthew , W. D. 1915 . A revision of the Lower Eocene Wasatch and Wind River faunas. Part IV: Entelonychia, Primates, Insectivora (part) . Bulletin of the American Museum of Natural History , 34 : 429 – 483 .
   Google Scholar
• _____ . 1939 . Climate and Evolution , (2nd edn) , 223 New York : New York Academy of Sciences .
   Google Scholar
• Maturana , H. R. 1962 . A study of the species of the genus Basiliscus . Bulletin of the Museum of Comparative Zoology , 128 : 1 – 34 .
   Google Scholar
• McDowell , S. B. and Bogert , C. M. 1954 . The systematic position of Lanthanotus and the affinities of the anguinomorphan lizards . Bulletin of the American Museum of Natural History , 105 : 1 – 142 .
   Google Scholar
• McGrew , P. O. , Berman , J. E. , Hecht , M. K. , Hummel , J. M. , Simpson , G. G. and Wood , A. E. 1959 . The geology and paleontology of the Elk Mountain and Tabernacle Butte area, Wyoming . Bulletin of the American Museum of Natural History , 117 : 121 – 176 .
   Google Scholar
• McGuire , J. A. 1996 . Phylogenetic systematics of crotaphytid lizards (Reptilia: Crotaphytidae) . Bulletin of the Carnegie Museum of Natural History , 32 : 1 – 143 .
   Google Scholar
• McKenna , M. C. 1983 . “ Cenozoic paleogeography of North Atlantic land bridges ” . In Structure and Development of the Greenland‐Scotland Ridge: New Methods and Concepts. , Edited by: Bott , M. H. P. , Saxov , S. , Talwani , M. and Thiede , J. 351 – 399 . New York : Plenum Press .
   Google Scholar
• Mertens , R. 1942 . Die Familie der Warane (Varanidae). Zweiter Teil: Der Schädel . Abhandlungen der senckenbergischen naturforschenden Gesellschaft , 465 : 117 – 234 .
   Google Scholar
• Meszoely , C. A. M. 1970 . North American fossil anguid lizards . Bulletin of the Museum of Comparative Zoology , 139 : 87 – 150 .
   Google Scholar
• Mittelbach , G. G. , Schemske , D. W. , Cornell , H. V. , Allen , A. P. , Brown , J. M. Bush , M. B. 2007 . Evolution and the latitudinal diversity gradient: speciation, extinction and biogeography . Ecology Letters , 10 : 315 – 331 .
   PubMed Web of Science ®Google Scholar
• Montero , R. and Gans , C. 1999 . The head skeleton of Amphisbaena alba Linneaus . Annals of Carnegie Museum , 68 : 15 – 80 .
   Web of Science ®Google Scholar
• Morley , R. J. 2000 . Origin and Evolution of Tropical Rain Forests. , 362 New York : John Wiley & Sons .
   Google Scholar
• Morris , W. J. 1966 . Fossil mammals from Baja California: new evidence of early Tertiary migrations . Science , 153 : 1376 – 1378 .
   PubMed Web of Science ®Google Scholar
• Nydam , R. L. 2000 . A new taxon of helodermatid‐like lizard from the Albian‐Cenomanian of Utah . Journal of Vertebrate Paleontology , 20 : 285 – 294 .
   Web of Science ®Google Scholar
• Oelrich , T. M. 1956 . The anatomy of the head of Ctenosaura pectinata (Iguanidae) . Miscellaneous Publications, Museum of Zoology, University of Michigan , 94 : 1 – 122 .
   Google Scholar
• Oppel , M. 1811 . Die Ordnungen, Familien, und Gattungen der Reptilien als Prodrom einer Naturgeschichte derselben. , 86 Munich : J. Lindnauer .
   Google Scholar
• Overpeck , J. T. , Webb , R. S. and Webb , T. III . 1992 . Mapping eastern North American vegetation change of the past 18 ka: no‐analogs and the future . Geology , 20 : 1071 – 1074 .
   Web of Science ®Google Scholar
• Pagani , M. , Pedentchouk , N. , Huber , M. , Sluijs , A. , Schouten , S. , Brinkhuis , H. , Damste , J. S. S. and Dickens , G. R. The Expedition Scientists. 2006. Arctic hydrology during global warming at the PalaEocene/Eocene thermal maximum . Nature , 442 671 – 675 .
   PubMed Web of Science ®Google Scholar
• Peterson , A. T. , Soberon , J. and Sanchez‐Cordero , V. 1999 . Conservatism of ecological niches in evolutionary time . Science , 285 : 1265 – 1267 .
   PubMed Web of Science ®Google Scholar
• Pianka , E. R. 1966 . Latitudinal gradients in species diversity: a review of concepts . American Naturalist , 100 : 33 – 46 .
   Web of Science ®Google Scholar
• Poe , S. 2004 . Phylogeny of anoles . Herpetological Monographs , 18 : 37 – 89 .
   Web of Science ®Google Scholar
• Pregill , G. K. , Gauthier , J. A. and Greene , H. W. 1986 . The evolution of helodermatid squamates, with description of a new taxon and an overview of Varanoidea . Transactions of the San Diego Society of Natural History , 21 : 167 – 202 .
   Google Scholar
• Presch , W. 1980 . Evolutionary history of the South American microteiid lizards (Teiidae: Gymnophthalminae) . Copeia , 1980 : 36 – 56 .
   Web of Science ®Google Scholar
• De Queiroz , K. 1987 . Phylogenetic systematics of iguanine lizards: a comparative osteological study . University of California Publications in Zoology , 118 : 1 – 203 .
   Google Scholar
• _____ . 1999 . “ The general lineage concept of species and the defining properties of the species category ” . In Species: New Interdisciplinary Essays. , Edited by: Wilson , R. A. 49 – 89 . Cambridge, MA : MIT Press .
   Google Scholar
• Ricklefs , R. E. 2004 . A comprehensive framework for global patterns in biodiversity . Ecology Letters , 7 : 1 – 15 .
   Web of Science ®Google Scholar
• Rieppel , O. 1980 . The phylogeny of anguinomorph lizards . Denkschriften der schweizerischen naturforschenden Gesellschaft , 94 : 1 – 86 .
   Google Scholar
• _____ . 1984 . “ Miniaturization of the lizard skull: its functional and evolutionary implications ” . In The Structure, Development and Evolution of Reptiles , Zoological Society of London Symposia No. 52 Edited by: Ferguson , M. W. J. 503 – 520 . London : Academic Press .
   Google Scholar
• _____ and Grande , L. 2007 . The anatomy of the fossil varanid lizard Saniwa ensidens Leidy, 1870, based on a newly discovered complete skeleton . Journal of Paleontology , 81 : 643 – 665 .
   Web of Science ®Google Scholar
• Rigby , J. K. Jr. 1980 . Swain Quarry of the Fort Union Formation, middle PalEocene (Torrejonian), Carbon County, Wyoming: geologic setting and mammalian fauna . Evolutionary Monographs , 3 : 1 – 179 .
   Google Scholar
• Rohl , U. , Bralower , T. J. , Norris , R. D. and Wefer , G. 2000 . New chronology for the late PalEocene thermal maximum and its environmental implications . Geology , 28 : 927 – 930 .
   Web of Science ®Google Scholar
• Rose , K. D. 1980 . Clarkforkian Land‐Mammal Age: revised definition, zonation, and tentative intercontinental correlations . Science , 208 : 744 – 746 .
   PubMed Web of Science ®Google Scholar
• _____ . 1981 . The Clarkforkian Land‐Mammal Age and mammalian faunal composition across the PalEocene‐Eocene boundary . University of Michigan Papers on Paleontology , 26 : 1 – 197 .
   Google Scholar
• _____ . 2006 . The Beginning of the Age of Mammals. , 428 Baltimore, MD : Johns Hopkins University Press .
   Google Scholar
• _____ , Emry , R. J. , Gaudin , T. J. and Storch , G. 2005 . “ Xenarthra and Pholidota ” . In The Rise of Placental Mammals: Origins and Relationships of the Major Extant Clades. , Edited by: Rose , K. D. and Archibald , J. D. 106 – 126 . Baltimore, MD : Johns Hopkins University Press .
   Google Scholar
• Rosenzweig , M. L. 1995 . Species Diversity in Space and Time. , 436 Cambridge : Cambridge University Press .
   Google Scholar
• Rossmann , T. 2000 . Osteologische Beschreibung von Geiseltaliellus longicaudus Kuhn, 1944 (Squamata: Iguanoidea) aus dem Mittleren Eozän der Fossillagerstätten Geiseltal und Grube Messel (Deutschland), mit einer Revision der Gattung Geiseltaliellus . Palaeontograph‐ica A , 258 : 117 – 158 .
   Google Scholar
• Rowe , T. and Gauthier , J. 1992 . Ancestry, paleontology, and definition of the name Mammalia . Systematic Biology , 41 : 372 – 378 .
   Web of Science ®Google Scholar
• Roy , K. and Goldberg , E. E. 2007 . Origination, extinction, and dispersal: integrative models for understanding present‐day diversity gradients . American Naturalist , 170 : S71 – S85 .
   PubMed Web of Science ®Google Scholar
• Royer , D. L. , Wing , S. L. , Beerling , D. J. , Jolley , D. W. , Koch , P. L. , Hickey , L. J. and Berner , R. A. 2001 . Paleobotanical evidence for near present‐day levels of atmospheric CO2 during part of the Tertiary . Science , 292 : 2310 – 2313 .
   PubMed Web of Science ®Google Scholar
• Savage , D. E. 1971 . The Sparnacian‐Wasatchian mammalian fauna, Early Eocene, of Europe and North America . Abhandlungen des Hessischen Landesamtes für Bodenforschung , 60 : 154 – 158 .
   Google Scholar
• Schatzinger , R. A. 1980 . New species of “Palaeoxantusia” (Reptilia: Sauria) from the Uintan (Eocene) of San Diego Co., California . Journal of Paleontology , 54 : 460 – 471 .
   Web of Science ®Google Scholar
• Schulte , J. A. II. , Valladares , J. P. and Larson , A. 2003 . Phylogenetic relationships within Iguanidae inferred using molecular and morphological data and a phylogenetic taxonomy of iguanian lizards . Herpetologica , 59 : 399 – 419 .
   Web of Science ®Google Scholar
• Schwenk , K. 1988 . “ Comparative morphology of the lepidosaur tongue and its relevance to squamate phylogeny ” . In Phylogenetic Relationships of the Lizard Families. , Edited by: Estes , R. and Pregill , G. K. 569 – 598 . Stanford, CA : Stanford University Press .
   Google Scholar
• Silcox , M. T. and Rose , K. D. 2001 . “ Unusual vertebrate microfaunas from the Willwood Formation, early Eocene of the Bighorn Basin, Wyoming ” . In Eocene Biodiversity: Unusual Occurrences and Rarely Sampled Habitats , Edited by: Gunnell , G. F. 131 – 164 . New York : Kluwer Academic/Plenum Publishers .
   Google Scholar
• Sloan , R. E. 1970 . “ Cretaceous and PalEocene terrestrial communities of western North America ” . In Proceedings of the North American Paleontological Convention. , Edited by: Yochelson , E. L. 427 – 453 . Lawrence, KS : Allen Press .
   Google Scholar
• Smith , A. B. 1994 . Systematics and the Fossil Record: Documenting Evolutionary Patterns. , 223 London : Blackwell .
   Google Scholar
• Smith , H. M. 1946 . Handbook of Lizards: Lizards of the United States and of Canada. , 557 Ithaca, NY : Comstock Publishing .
   Google Scholar
• Smith , K. T. 2006a . A diverse new assemblage of late Eocene squamates (Reptilia) from the Chadron Formation of North Dakota, U.S.A. . Palaeontologia Electronica , 9 : 1 – 44 .
   Web of Science ®Google Scholar
• _____ . 2006b . Horizontal and Vertical Aspects of Species Diversity in the Fossil Record: Alpha, Beta, and the Temporal Nature of the Richness‐Temperature Relation. , xvii + 588 Yale University . Unpublished PhD thesis
   Google Scholar
• _____ . in press . Eocene lizards of the clade Geiseltaliellus from Messel and Geiseltal, Germany, and the early radiation of lguanidae (Reptilia: Squamata) . Bulletin of the Peabody Museum of Natural History. ,
   Google Scholar
• Smith , T. , Rose , K. D. and Gingerich , P. D. 2006 . Rapid Asia‐Europe‐North America geographic dispersal of earliest Eocene primate Teilhardina during the PalEocene‐Eocene Thermal Maximum . Proceedings of the National Academy of Sciences of the United States of America , 103 : 11223 – 11227 .
   PubMed Web of Science ®Google Scholar
• Stafford , T. W. , Semken , H. A. , Graham , R. W. , Klippel , W. F. , Markova , A. , Smirnov , N. G. and Southon , J. 1999 . First accelerator mass spectrometry 14C dates documenting contemporaneity of nonanalog species in late Pleistocene mammal communities . Geology , 27 : 903 – 906 .
   Web of Science ®Google Scholar
• Stebbins , R. C. 2003 . A Field Guide to Western Reptiles and Amphibians , (2nd edn) , 533 New York : Houghton Mifflin .
   Google Scholar
• van Steemis , C. G. G. J. 1962 . The land‐bridge theory in botany . Blumea , 11 : 235 – 372 .
   Google Scholar
• Strait , S. G. 2001 . New Wa‐0 mammalian fauna from Castle Gardens in the southeastern Bighorn Basin . University of Michigan Papers on Paleontology , 33 : 127 – 143 .
   Google Scholar
• Sullivan , R. M. 1979 . Revision of the Paleogene genus Glyptosaurus (Reptilia, Anguidae) . Bulletin of the American Museum of Natural History , 163 : 1 – 72 .
   Google Scholar
• _____ . 1981 . “ Fossil lizards from the San Juan Basin, New Mexico ” . In Advances in San Juan Basin Paleontology. , Edited by: Lucas , S. G. , Rigby , K. Jr. and Kues , B. 76 – 88 . Albuquerque, NM : University of New Mexico Press .
   Google Scholar
• _____ . 1982 . Fossil lizards from Swain Quarry “Fort Union Formation,” middle PalEocene (Torrejonian), Carbon County, Wyoming . Journal of Paleontology , 56 : 996 – 1010 .
   Web of Science ®Google Scholar
• _____ . 1985 . A new middle Paleocene (Torrejonian) rhineurid amphisbaenian, Plesiorhineura tsentasi new genus, new species, from the San Juan Basin, New Mexico . Journal of Paleontology , 59 : 1481 – 1485 .
   Web of Science ®Google Scholar
• _____ . 1986 . A new fossil anguid lizard Parodaxosaurus sanjuanensis new genus, new species from the middle PalEocene (Torrejonian) Nacimiento Formation, San Juan Basin, New Mexico . Journal of Herpetology , 20 : 109 – 111 .
   Web of Science ®Google Scholar
• _____ . 1989 . Proglyptosaurus huerfanensis new genus, new species: glypto‐saurine lizard (Squamata: Anguidae) from the early Eocene of Colorado . American Museum Novitates , 2949 : 1 – 8 .
   Google Scholar
• _____ and Lucas , S. G. 1986 . Annotated list of lower vertebrates from the Paleocene Nacimiento Formation (Puercan‐Torrejonian), San Juan Basin, New Mexico . Journal of Herpetology , 20 : 202 – 209 .
   Web of Science ®Google Scholar
• _____ and _____ . 1988 . Fossil Squamata from the San Jose Formation, early Eocene, San Juan Basin, New Mexico . Journal of Paleontology , 62 : 631 – 639 .
   Web of Science ®Google Scholar
• _____ , Keller , T. and Habersetzer , J. 1999 . Middle Eocene (Geiseltalian) anguid lizards from Geiseltal and Messel, Germany. I. Ophisauriscus quadrupes Kuhn, 1940 . Courier Forschungsinstitut Senckenberg , 216 : 97 – 129 .
   Google Scholar
• Thomas , C. D. 1994 . Extinction, colonization, and metapopulations: environmental tracking by rare species . Conservation Biology , 8 : 373 – 378 .
   Web of Science ®Google Scholar
• Torres‐Carvajal , O. 2003 . Cranial osteology of the Andean lizard Steno‐cercus guentheri (Squamata: Tropiduridae) and its postembryonic development . Journal of Morphology , 255 : 94 – 113 .
   PubMed Web of Science ®Google Scholar
• Townsend , T. M. , Larson , A. , Louis , E. and Macey , J. R. 2004 . Molecular phylogenetics of Squamata: the position of snakes, amphisbaenians, and dibamids, and the root of the squamate tree . Systematic Biology , 53 : 735 – 757 .
   PubMed Web of Science ®Google Scholar
• Vicario , S. , Caccone , A. and Gauthier , J. 2003 . Xantusiid “night” lizards: a puzzling phylogenetic problem revisited using likelihood‐based Bayesian methods on mtDNA sequences . Molecular Phylogenetics and Evolution , 26 : 243 – 261 .
   PubMed Web of Science ®Google Scholar
• Walther , G.‐R. , Post , E. , Convey , P. , Menzel , A. , Parmesan , C. , Beebee , T. J. C. , Fromentin , J.‐M. , Hoegh‐Guldberg , O. and Bairlein , F. 2002 . Ecological responses to recent climate change . Nature , 416 : 389 – 395 .
   PubMed Web of Science ®Google Scholar
• Werner , G. 1962 . Das Cranium der Brückenechse, Sphenodon punctatus Gray, von 58 mm Gesamtlänge . Zeitschrift für Anatomie und Entwicklungsgeschichte , 123 : 323 – 368 .
   Google Scholar
• Whittaker , R. H. 1972 . Evolution and measurement of species diversity . Taxon , 21 : 213 – 251 .
   Google Scholar
• Wiens , J. J. 2004 . Speciation and ecology revisited: phylogenetic niche conservatism and the origin of species . Evolution , 58 : 193 – 197 .
   PubMed Web of Science ®Google Scholar
• _____ . 2007 . Global patterns of diversification and species richness in amphibians . American Naturalist , 170 : S86 – S106 .
   PubMed Web of Science ®Google Scholar
• _____ and Donoghue , M. J. 2004 . Historical biogeography, ecology and species richness . Trends in Ecology and Evolution , 19 : 639 – 644 .
   PubMed Web of Science ®Google Scholar
• _____ and Slingluff , J. L. 2001 . How lizards turn into snakes: a phylogenetic analysis of body‐form evolution in anguid lizards . Evolution , 55 : 2303 – 2318 .
   PubMed Web of Science ®Google Scholar
• _____ , Graham , C. H. , Moen , D. S. , Smith , S. A. and Reederm , T. W. 2006 . Evolutionary and ecological causes of the latitudinal diversity gradient in hylid frogs: tree frogs unearth the roots of high tropical diversity . American Naturalist , 168 : 579 – 596 .
   PubMed Web of Science ®Google Scholar
• Wilf , P. 2000 . Late Paleocene‐early Eocene climate changes in southwestern Wyoming: paleobotanical analysis . Geological Society of America Bulletin , 112 : 292 – 307 .
   Web of Science ®Google Scholar
• _____ , Beard , K. C. , Davies‐Vollum , K. S. and Norejko , J. W. 1998 . Portrait of a late Paleocene (early Clarkforkian) terrestrial ecosystem: Big Multi Quarry and associated strata, Washakie Basin, southwestern Wyoming . Palaios , 13 : 514 – 532 .
   Web of Science ®Google Scholar
• Willig , M. R. , Kaufman , D. M. and Stevens , R. D. 2003 . Latitudinal gradients of biodiversity: pattern, process, scale, and synthesis . Annual Review of Ecology, Evolution, and Systematics , 34 : 273 – 309 .
   Web of Science ®Google Scholar
• Wing , S. L. and Harrington , G. J. 2001 . Floral response to rapid warming in the earliest Eocene and implications for concurrent faunal change . Paleobiology , 27 : 539 – 563 .
   Web of Science ®Google Scholar
• _____ , Gingerich , P. D , Schmitz , B and Thomas , E , eds. 2003 . Causes and Consequences of Globally Warm Climates in the Early Paleogene , Geological Society of America Special Paper No. 369 614 Boulder, CO : Geological Society of America .
   Google Scholar
• _____ , Harrington , G. J. , Smith , F. A. , Bloch , J. I. , Boyer , D. M. and Freeman , K. H. 2005 . Transient floral change and rapid global warming at the Paleocene‐Eocene boundary . Science , 310 : 993 – 996 .
   PubMed Web of Science ®Google Scholar
• Yans , J. , Strait , S. G. , Smith , T. , Dupuis , C. , Steurbaut , E. and Gingerich , P. D. 2006 . High‐resolution carbon isotope stratigraphy and mammalian faunal change at the Paleocene‐Eocene boundary in the Honeycombs area of the southern Bighorn Basin, Wyoming . American Journal of Science , 306 : 712 – 735 .
   Web of Science ®Google Scholar
• Zachos , J. , Pagani , M. , Sloan , L. , Thomas , E. and Billups , K. 2001 . Trends, rhythms, and aberrations in global climate 65 Ma to present . Science , 292 : 686 – 693 .
   PubMed Web of Science ®Google Scholar
• _____ , Dickens , G. R. and Zeebe , R. E. 2008 . An early Cenozoic perspective on greenhouse warming and carbon‐cycle dynamics . Nature , 451 : 279 – 283 .
   PubMed Web of Science ®Google Scholar
• E‐mail: [email protected]
   Google Scholar