Cranial morphology of recumbirostrans (Lepospondyli) from the Permian of Kansas and Nebraska, and early morphological evolution inferred by micro-computed tomography

LITERATURE CITED

• Anderson , J. S. 2001 . The phylogenetic trunk: maximal inclusion of taxa with missing data in an analysis of the Lepospondyli (Vertebrata, Tetrapoda) . Systematic Biology , 50 : 170 – 193 .
   PubMed Web of Science ®Google Scholar
• Anderson , J. S. 2007 . “ Incorporating ontogeny into the matrix: a phylogenetic evaluation of developmental evidence for the origins of modern amphibians ” . In Major Transitions in Vertebrate Evolution , Edited by: Anderson , J. S. and Sues , H.-D. 182 – 227 . Bloomington and Indianapolis , Indiana : Indiana University Press .
   Google Scholar
• Anderson , J. S. and Reisz , R. R. 2003 . A new microsaur (Tetrapoda: Lepospondyli) from the Lower Permian of Richards Spur (Fort Sill), Oklahoma . Canadian Journal of Earth Sciences , 40 : 499 – 505 .
   Web of Science ®Google Scholar
• Anderson , J. and Reisz , R. 2011 . Growth series of the recumbirostran (Lepospondyli; Gymnarthridae) Cardiocephalus peabodyi from Richards Spur, Oklahoma; New anatomical information and implications for the evolution of ‘microsaurs.’ . Journal of Vertebrate Paleontology , 31 ( Program and Abstracts 2011 ) : 62A
   Google Scholar
• Anderson , J. S. , Scott , D. and Reisz , R. R. 2009 . Nannaroter mckinziei, a new ostodolepid ‘microsaur’ (Tetrapoda, Lepospondyli, Recumbirostra) from the Early Permian of Richards Spur (Ft. Sill), Oklahoma . Journal of Vertebrate Paleontology , 29 : 379 – 388 .
   Web of Science ®Google Scholar
• Anderson , J. S. , Reisz , R. R. , Scott , D. , Fröbisch , N. B. and Sumida , S. S. 2008 . A stem batrachian from the Early Permian of Texas and the origin of frogs and salamanders . Nature , 453 : 515 – 518 .
   PubMed Web of Science ®Google Scholar
• Boardman , D. R. II , Wardlaw , B. R. and Nestell , M. K. 2009 . Stratigraphy and conodont biostratigraphy of the uppermost Carboniferous and Lower Permian from the North American midcontinent . Kansas Geological Survey Bulletin , 255 : 1 – 42 .
   Google Scholar
• Bolt , J. R. 1980 . New tetrapods with bicuspid teeth from the Fort Sill locality (Lower Permian, Oklahoma) . Neues Jahrbuch für Geologie und Paläontologie, Monatshefte , 8 : 449 – 459 .
   Google Scholar
• Carroll , R. L. 1998 . “ Order Microsauria ” . In Handbuch der Paläoherpetologie: Lepospondyli , Edited by: Carroll , R. L. , Bossy , K. A. , Milner , A. C. , Andrews , S. M. and Wellstead , C. F. 1 – 72 . Munich : Verlag Dr. Friedrich Pfeil .
   Google Scholar
• Carroll , R. L. and Gaskill , P. 1978 . The Order Microsauria . Memoirs of the American Philosophical Society , 126 : 1 – 211 .
   Google Scholar
• Cunningham , C. R. and Dickson , E. D. III. 1996 . Distributions of Kansas Permo-Carboniferous vertebrate assemblages as a function of wet and dry seasons . Transactions of the Kansas Academy of Science , 99 : 16 – 28 .
   Google Scholar
• Englehorn , J. , Small , B. J. and Huttenlocker , A. K. 2008 . Redescription of Acroplous vorax (Temnospondyli: Dvinosauria) based on new specimens from the Early Permian of Nebraska and Kansas, U.S.A . Journal of Vertebrate Paleontology , 28 : 291 – 305 .
   Web of Science ®Google Scholar
• Foreman , B. C. and Martin , L. D. 1988 . A review of Paleozoic tetrapod localities of Kansas and Nebraska . Kansas Geological Survey Guidebook Series , 6 : 133 – 145 .
   Google Scholar
• Haworth , A. H. 1825 . A binary arrangement of the class Amphibia . Philosophical Magazine and Journal , 65 : 372 – 373 .
   Google Scholar
• Hembree , D. I. , Hasiotis , S. T. and Martin , L. D. 2005 . Torridorefugium eskridgensis (new ichnogenus and ichnospecies): amphibian aestivation burrows from the Lower Permian Speiser Shale of Kansas . Journal of Paleontology , 79 : 583 – 593 .
   Web of Science ®Google Scholar
• Hembree , D. I. , Martin , L. D. and Hasiotis , S. T. 2004 . Amphibian burrows and ephemeral ponds of the Lower Permian Speiser Shale, Kansas; evidence for seasonality in the midcontinent . Palaeogeography, Palaeoclimatology, Palaeoecology , 203 : 127 – 152 .
   Web of Science ®Google Scholar
• Henrici , A. C. , Martens , T. , Berman , D. S and Sumida , S. S. 2011 . An ostodolepid ‘microsaur’ (Lepospondyli) from the Lower Permian Tambach Formation of central Germany . Journal of Vertebrate Paleontology , 31 : 997 – 1004 .
   Web of Science ®Google Scholar
• Huttenlocker , A. K. , Pardo , J. D. and Small , B. J. 2005 . An earliest Permian nonmarine vertebrate assemblage from the Eskridge Formation, Nebraska . New Mexico Museum of Natural History and Science Bulletin , 30 : 133 – 143 .
   Google Scholar
• Huttenlocker , A. K. , Pardo , J. D. and Small , B. J. 2007 . Plemmyradytes shintoni, gen. et sp. nov., an Early Permian amphibamid (Temnospondyli: Dissorophoidea) from the Eskridge Formation, Nebraska . Journal of Vertebrate Paleontology , 27 : 316 – 328 .
   Web of Science ®Google Scholar
• Huttenlocker , A. K. , Pardo , J. D. , Small , B. J. and Milner , A. 2008 . Biotic responses to climate change in the Permo-Carboniferous transition, part 2: beta diversity, regional responses, and Vaughn's faunal cline . Journal of Vertebrate Paleontology , 28 ( 3, Supplement ) : 94A – 95A .
   Web of Science ®Google Scholar
• Joeckel , R. M. 1991 . Paleosol stratigraphy of the Eskridge Formation; Early Permian pedogenesis and climate in southeastern Nebraska . Journal of Sedimentary Research , 61 : 234 – 255 .
   Google Scholar
• Maddin , H. C. , Olori , J. C. and Anderson , J. S. 2011 . A redescription of Carrolla craddocki (Lepospondyli: Brachystelechidae) based on high-resolution CT, and the impacts of miniaturization and fossoriality on morphology . Journal of Morphology , 272 : 722 – 743 .
   PubMed Web of Science ®Google Scholar
• Miller , K. B. and West , R. R. 1998 . Identification of sequence boundaries within cyclic strata of the Lower Permian of Kansas, USA—problems and alternatives . Journal of Geology , 106 : 119 – 132 .
   Web of Science ®Google Scholar
• Miller , K. B. , McCahon , T. J. and West , R. R. 1996 . Lower Permian (Wolfcampian) paleosol-bearing cycles of the U.S. midcontinent: evidence of climatic cyclicity . Journal of Sedimentary Research , 66 : 71 – 84 .
   Web of Science ®Google Scholar
• Ossian , C. R. 1974 . “ Paleontology, paleobotany and facies characteristics of a Pennsylvanian delta in southeastern Nebraska ” . 393 Unpublished Ph.D. dissertation, University of Texas at Austin, Austin, Texas
   Google Scholar
• Pardo , J. , Huttenlocker , A. , Small , B. and Milner , A. 2008 . Biotic responses to climate change in the Permo-Carboniferous transition, part 1: vertebrate faunal distributions and regional provincialism . Journal of Vertebrate Paleontology , 28 ( 3, Supplement ) : 125A
   Web of Science ®Google Scholar
• Rees , P. M. 2002 . Land-plant diversity and the end-Permian mass extinction . Geology , 30 : 827 – 830 .
   Web of Science ®Google Scholar
• Reisz , R. R. and Sues , H.-D. 2000 . “ Herbivory in Late Paleozoic and Triassic terrestrial vertebrates ” . In Evolution of Herbivory in Terrestrial Vertebrates , Edited by: Reisz , R. R. and Sues , H.-D. 9 – 41 . Cambridge , , U.K : Cambridge University Press .
   Google Scholar
• Ritter , S. M. 1995 . Upper Missourian-lower Wolfcampian (upper Kasimovian-lower Asselian) conodont biostratigraphy of the midcontinent, U.S.A . Journal of Paleontology , 69 : 1139 – 1154 .
   Web of Science ®Google Scholar
• Schultze , H.-P. and Foreman , B. 1981 . A new gymnarthrid microsaur from the Lower Permian of Kansas with a review of the tuditanomorph microsaurs (Amphibia) . Occasional Papers of the Museum of Natural History, The University of Kansas , 19 : 1 – 25 .
   Google Scholar
• Sidor , C. A. , O’Keefe , F. R. , Damiani , R. , Steyer , J. S. , Smith , R. M. H. , Larsson , H. C. E. , Sereno , P. C. , Ide , O. and Maga , A. 2005 . Permian tetrapods from the Sahara show climate-controlled endemism in Pangaea . Nature , 434 : 886 – 889 .
   PubMed Web of Science ®Google Scholar
• Small , B. J. , Pardo , J. D. and Huttenlocker , A. K. 2006 . Taxonomic diversity of estivating species in the lowest Permian of North America: onset of seasonality and comments on physiological plasticity . Journal of Vertebrate Paleontology , 26 ( 3, Supplement ) : 126A
   Web of Science ®Google Scholar
• Swofford , D. 1999 . PAUP: Phylogenetic Analysis Using Parsimony, version 4.0 beta 10 , Sunderland , Massachusetts : Distributed by Sinauer Associates .
   Google Scholar
• Wellstead , C. F. 1991 . Taxonomic revision of the Lysorophia, Permo-Carboniferous lepospondyl amphibians . Bulletin of the American Museum of Natural History , 209 : 1 – 90 .
   Google Scholar
• Zittel , K. von . 1888 . Handbuch der Palaeontologie. 1 . : 900 Abteilung Palaeozoologie. Band 3. Amphibia. Oldenbourg, Munich and Leipzig
   Google Scholar