Revised paleoecology of placodonts – with a comment on ‘The shallow marine placodont Cyamodus of the central European Germanic Basin: its evolution, paleobiogeography and paleoecology’ by C.G. Diedrich (Historical Biology, iFirst article, 2011, 1–19, doi: 10.1080/08912963.2011.575938)

References

• Agassiz , L . 1833–43 . Recherches sur les poissons fossiles , Vol. I–V , Neuchâtel : Imprimaire de Petitpierre .
   Google Scholar
• Bodzioch , A . 1997 . Formacja karchowicka: definicja i stratygrafia [The Karchowice formation: definition and stratigraphy; in Polish with English summary] . Geologos , 2 : 165 – 199 .
   Google Scholar
• Brack , P , Rieber , H , Nicora , A and Mundil , R . 2005 . The global boundary stratotype section and point (GSSP) of the Ladinian Stage (Middle Triassic) at Bagolino (Southern Alps, Northern Italy) and its implications for the Triassic time scale . Episodes , 28 ( 4 ) : 233 – 244 .
   Web of Science ®Google Scholar
• Dalrymple , GH . 1979 . On the jaw mechanism of the snail-crushing lizards, Dracaena Daudin 1802 (Reptilia, Lacertilia, Teiidae) . J Herpetol , 13 ( 3 ) : 303 – 311 .
   Web of Science ®Google Scholar
• Diedrich , CG . 2010 . Palaeoecology of Placodus gigas (Reptilia) and other placodontids – Middle Triassic macroalgae feeders in the Germanic Basin of central Europe – and evidence for convergent evolution with Sirenia . Palaeogeogr Palaeoclimatol Palaeoecol , 285 ( 3–4 ) : 287 – 306 .
   Web of Science ®Google Scholar
• Diedrich CG. 2011a. The shallow marine placodont Cyamodus of the central European Germanic Basin: its evolution, paleobiogeography and paleoecology Hist Biol. iFirst article, 1–19, doi: 10.1080/08912963.2011.575938.
   Google Scholar
• Diedrich , CG . 2011b . Fossil Middle Triassic “sea cows” – placodont reptiles as macroalgae feeders along the North-western Tethys coastline with Pangaea and in the Germanic Basin . Nat Sci , 3 ( 1 ) : 9 – 27 .
   Google Scholar
• Druzinsky , RE and Greaves , WS . 1979 . A model to explain the posterior limit of the bite point in reptiles . J Morphol , 160 ( 2 ) : 165 – 168 .
   PubMed Web of Science ®Google Scholar
• Fay , FH . 1985 . Odobenus rosmarus . Mamm Species , 238 : 1 – 7 .
   Google Scholar
• Feist-Burkhardt , S , Götz , AE , Szulc , J , Borkhataria , R , Geluk , M , Haas , J , Hornung , J , Jordan , P , Kempf , O Michalík , J . 2008 . “ Triassic ” . In The geology of central Europe, Mesozoic and Cenozoic , Edited by: McCann , T . Vol. 2 , 749 – 821 . London : The Geological Society . Chapter 13
   Google Scholar
• Fisher , DC . 2008 . Stratocladistics: integrating temporal data and character data in phylogenetic inference . Annu Rev Ecol Evol Syst , 39 : 365 – 385 .
   Web of Science ®Google Scholar
• Froitzheim , N , Plašienka , D and Schuster , R . 2008 . “ Alpine tectonics of the Alps and western Carpathians ” . In The geology of central Europe, Mesozoic and Cenozoic , Edited by: McCann , T . Vol. 2 , 1141 – 1232 . London : The Geological Society . Chapter 18
   Google Scholar
• Furrer , H . 1995 . The Kalkschieferzone (Upper Meride Limestone; Ladinian) near Meride (Canton Ticino, Southern Switzerland) and the evolution of a Middle Triassic intraplatform basin . Eclogae Geol Helv , 88 ( 3 ) : 827 – 852 .
   Google Scholar
• Furrer , H , Schaltegger , U , Ovtcharova , M and Meister , P . 2008 . U-Pb zircon age of volcaniclastic layers in Middle Triassic platform carbonates of the Austroalpine Silvretta nappe (Switzerland) . Swiss J Geosci , 101 ( 3 ) : 595 – 603 .
   Web of Science ®Google Scholar
• Fürsich , FT . 1981 . “ Die Palaeonucula strigilata/Dentalium undulatum-Faunengemeinschaft in Weichböden der mittleren alpinen Trias ” . In Paläoökologie , Edited by: McKerrow , WS . 138 – 139 . Stuttgart : Franckh .
   Google Scholar
• Gaetani , M , Courel , L , Arche , A , Warrington , G , Geluk , M , Beutler , G , Szulc , J , Lozowski , V , Sandulescu , M Seghedi , A . 2000 . “ Early Ladinian paleogeographic map ” . In Peri-Tethys Atlas and explanatory notes , Edited by: Dercourt , J , Gaetani , M and Vrielynck , B . 32 – 40 . Paris : CCGM/CGMW .
   Google Scholar
• Grubich , J . 2003 . Morphological convergence of pharyngeal jaw structure in durophagous perciform fish . Biol J Linn Soc , 80 ( 1 ) : 147 – 165 .
   Web of Science ®Google Scholar
• Gürich , GJE . 1884 . Über einige Saurier des oberschlesischen Muschelkalkes . Z dt geol Ges , 36 : 125 – 144 .
   Google Scholar
• Hagdorn , H . 2004 . Muschelkalkmuseum Ingelfingen , 87 Heilbronn : Edition Lattner .
   Google Scholar
• Hagdorn , H and Reif , W-E . 1988 . “Die Knochenbreccie von Crailsheim” und weitere Mitteltrias-Bonebeds in Nordost-Württemberg – Alte und neue Deutungen ” . In Neue Forschungen zur Erdgeschichte von Crailsheim. Zur Erinnerung an Hofrat Richard Blezinger (Sonderbände der Gesellschaft für Naturkunde in Württemberg. Band 1) , Edited by: Hagdorn , H . 116 – 143 . Stuttgart : Goldschneck-Verlag Werner K. Weidert .
   Google Scholar
• Hagdorn , H and Rieppel , O . 1999 . Stratigraphy of marine reptiles in the Triassic of Central Europe . Zbl Geol Palaeont, Teil I , 1998 ( 7–8 ) : 651 – 678 .
   Google Scholar
• Hardenbol , J , Thierry , J , Farley , MB , Jacquin , T , de Graciansky , P-C and Vail , PR , eds. 1998 . Mesozoic and Cenozoic Sequence Stratigraphy of European Basins , SEPM Special Publication No. 60 786 Tulsa : SEPM (Society for Sedimentary Geology) . [ISBN 1-56576-043-3]
   Google Scholar
• Herrel , A and de Vree , F . 1999 . Kinematics of intraoral transport and swallowing in the herbivorous lizard Uromastix acanthinurus . J Exp Biol , 202 ( 9 ) : 1127 – 1137 .
   PubMed Web of Science ®Google Scholar
• Herrel , A , Meyers , JJ , Nishikawa , KC and de Vree , F . 2001 . The evolution of feeding motor patterns in lizards: modulatory complexity and possible constraints . Am Zool , 41 ( 6 ) : 1311 – 1320 .
   Google Scholar
• Husar , SL . 1978 . Trichechus senegalensis . Mamm Species , 89 : 1 – 3 .
   Google Scholar
• Jiang , D-Y , Motani , R , Hao , W-C , Rieppel , O , Sun , Y-L , Schmitz , L and Sun , Z-Y . 2008 . First record of Placodontoidea (Reptilia, Sauropterygia, Placodontia) from the Eastern Tethys . J Vertebr Paleontol , 28 ( 3 ) : 904 – 908 .
   Web of Science ®Google Scholar
• Jiang , D-Y , Motani , R , Hao , W-C , Rieppel , O , Sun , Y-L , Tintori , A , Sun , Z-Y and Schmitz , L . 2009 . Biodiversity and sequence of the Middle Triassic Panxian marine reptile fauna, Guizhou Province, China . Acta Geol Sin , 83 ( 3 ) : 451 – 459 .
   Web of Science ®Google Scholar
• Kaim , A . 1997 . Brachiopod-bivalve assemblages of the middle Triassic Terebratula Beds, Upper Siesia . Poland Acta Palaeontol Pol , 42 : 333 – 359 .
   Web of Science ®Google Scholar
• Kardong , KV . 2009 . Vertebrates – Comparative anatomy, function, evolution , 5th ed. , 779 Boston, MA : McGraw-Hill .
   Google Scholar
• King , G . 1996 . Reptiles and herbivory , 160 London : Chapman & Hall .
   Google Scholar
• Kozur , HW and Bachmann , GH . 2008 . “ Updated correlation of the Germanic Triassic with the Tethyan scale and assigned numeric ages ” . In Upper Triassic Subdivisions, Zonations and Events: Meeting of the late IGCP 467 and STS , 28 September–2 October 2008 Edited by: Krystyn , L and Mandl , GW . Vol. 76 , 53 – 58 . Bad Goisern (Upper Austria) : Abstracts and Excursion-Guide. Berichte der Geologischen Bundesanstalt .
   Google Scholar
• Kuhn-Schnyder , E . 1959 . Über das Gebiss von Cyamodus . Vierteljahresschr Naturforsch Ges Zuerich , 104 ( Festschrift Steiner ) : 174 – 188 .
   Google Scholar
• Kuhn-Schnyder , E . 1974 . Die Triasfauna der Tessiner Kalkalpen . Neujahrsbl Naturforsch Ges Zuerich , 176 : 1 – 119 .
   Google Scholar
• Lanyon , JM and Sanson , GD . 2006 . Mechanical disruption of seagrass in the digestive tract of the dugong . J Zool , 270 ( 2 ) : 277 – 289 .
   Web of Science ®Google Scholar
• Li , C . 2000 . Placodont (Reptilia: Placodontia) from Upper Triassic of Guizhou, Southwest China [in Chinese with English summary] . Vertebrata PalAsiatica , 38 ( 4 ) : 314 – 317 .
   Google Scholar
• Li , C and Rieppel , O . 2002 . A new cyamodontoid placodont from Triassic of Guizhou, China [in Chinese] . Chinese Sci Bull , 47 ( 2 ) : 156 – 159 .
   Google Scholar
• Lyman , CP . 1939 . A vestigial lower incisor in the dugong . J Mammal , 20 ( 2 ) : 229 – 231 .
   Google Scholar
• Marshall , CD , Kubilis , PS , Huth , GD , Edmonds , VM , Halin , DL and Reep , RL . 2000 . Food-handling ability and feeding-cycle length of manatees feeding on several species of aquatic plants . J Mammal , 81 ( 3 ) : 649 – 658 .
   Web of Science ®Google Scholar
• Massare , JA . 1987 . Tooth morphology and prey preference of Mesozoic marine reptiles . J Vertebr Paleontol , 7 ( 2 ) : 121 – 137 .
   Google Scholar
• Massare , JA . 1997 . “ Introduction, Part VI: Faunas, behaviour, and evolution ” . In Ancient marine reptiles , Edited by: Callaway , JM and Nicholls , EL . 401 – 421 . San Diego, CA : Academic Press .
   Google Scholar
• Mazin , J-M . 1989 . La denture et la région palatine des Placodontia (Reptilia, Trias). Implications phylogénétiques . Geobios , 22 ( 6 ) : 725 – 734 .
   Web of Science ®Google Scholar
• Mazin , J-M and Pinna , G . 1993 . Palaeoecology of the armoured placodonts . Paleontologia Lombarda N.S , 2 ( 1 ) : 83 – 91 .
   Google Scholar
• Menning , M , Schröder , B , Plein , E , Simon , T , Lepper , J , Röhling , H-G , Heunisch , C , Stapf , K , Lützner , H Käding , K-C . 2011 . Beschlüsse der Deutschen Stratigraphischen Kommission 1991–2010 zu Perm und Trias von Mitteleuropa [Recommendations of the German Stratigraphic Commission 1991–2010 on the Permian and Triassic of Central Europe] . Z dt Ges Geowiss , 162 : 1 – 18 .
   Google Scholar
• Meyer , H von . 1863 . Die Placodonten, eine Familie von Sauriern der Trias . Palaeontology , 11 : 175 – 221 .
   Google Scholar
• Niedźwiedzki , R . 2000 . Litostratygrafia formacji górazdzanskiej I formacji dziewkowickiej na Slasku Opolskim . Prace Geologiczno-Mineralogiczne , 71 : 1 – 72 .
   Google Scholar
• Niedźwiedzki , R . 2002 . Revision of stratigraphic ranges of selected invertebrate taxa from the Muschelkalk in Silesia . Geol Quart , 46 : 219 – 225 .
   Google Scholar
• Nosotti , S and Pinna , G . 1993 . Cyamodus kuhn-schnyderi n. sp., nouvelle espèce de Cyamodontidae (Reptilia, Placodontia) du Muschelkalk supérieur allemand . C.R. Acad Sci Ser 2 , 317 : 847 – 850 .
   Google Scholar
• Nosotti , S and Pinna , G . 1996 . Osteology of the skull of Cyamodus kuhnschnyderi Nosotti & Pinna 1993 (Reptilia, Placodontia) . Paleontologia Lombarda N.S , 6 : 3 – 42 .
   Google Scholar
• Nosotti , S and Rieppel , O . 2002 . The braincase of Placodus Agassiz, 1833 (Reptilia, Placodontia) . Mem Soc Ital Sci Nat Mus Civ Stor Nat Milano , 31 ( 1 ) : 3 – 18 .
   Google Scholar
• Owen , R . 1858 . Description of the skull and teeth of the Placodus laticeps, Owen, with indications of other new species of Placodus, and evidence of the saurian nature of that genus . Phil Trans R Soc Lond , 148 : 169 – 184 .
   Google Scholar
• Peyer , B . 1931 . Die Triasfauna der Tessiner Kalkalpen III. Placodontia . Abh Schweizer Paläontol Gesellschaft , 51 : 1 – 25 .
   Google Scholar
• Pinna , G . 1992 . Cyamodus hildegardis Peyer, 1931 (Reptilia, Placodontia) . Mem Soc Ital Sci Nat Mus Civ Stor Nat Milano , 26 ( 1 ) : 1 – 21 .
   Google Scholar
• Pinna , G and Mazin , J-M . 1993 . Stratigraphy and paleobiogeography of the Placodontia . Paleontologia Lombarda N.S , 2 : 125 – 130 .
   Google Scholar
• Pinna , G and Nosotti , S . 1989 . Anatomia, morfologia funzionale e paleoecologia del rettile placodonte Psephoderma alpinum Meyer, 1858 . Mem Soc Ital Sci Nat Mus Civ Stor Nat Milano , 25 ( 2 ) : 17 – 50 .
   Google Scholar
• Presch , W . 1974 . A survey of the dentition of the macroteiid lizards (Teiidae: Lacertilia) . Herpetologica , 30 ( 4 ) : 344 – 349 .
   Google Scholar
• Reif , W-E and Stein , F . 1999 . Morphogeny and function of the dentition of Henodus chelyops Huene, 1936 (Placodontia, Triassic) . N Jb Geol Palaeont Mh , 1999 ( 2 ) : 65 – 80 .
   Google Scholar
• Reilly , SM , McBrayer , LD and White , TD . 2001 . Prey processing in amniotes: biomechanical and behavioral patterns of food reduction . Comp Biochem Physiol A , 128 ( 3 ) : 397 – 415 .
   PubMed Web of Science ®Google Scholar
• Renesto , S and Tintori , A . 1995 . Functional morphology and mode of life of the Late Triassic placodont Psephoderma alpinum Meyer from the Calcare di Zorino (Lombardy, N Italy) . Riv It Paleontol Strat , 101 ( 1 ) : 37 – 48 .
   Google Scholar
• Riedman , ML and Estes , JA . 1990 . The sea otter (Enhydra lutris): behavior, ecology, and natural history . U.S. Fish and Wildlife Serv Biol Rep , 90 ( 14 ) : 1 – 126 . Washington, DC
   Google Scholar
• Rieppel , O . 1995 . The genus Placodus: systematics, morphology, paleobiogeography, and paleobiology . Fieldiana Geol, N.S , 31 ( 1472 ) : 1 – 44 .
   Google Scholar
• Rieppel , O . 2000 . Sauropterygia I – Placodontia, Pachypleurosauria, Nothosauroidea, Pistosauroidea , Handbuch der Paläoherpetologie [Handbook of Paleoherpetology] Part 12A 134 Stuttgart : Schweizerbart .
   Google Scholar
• Rieppel , O . 2001a . The cranial anatomy of Placochelys placodonta Jaekel, 1902, and a review of the Cyamodontoidea (Reptilia, Placodonta) . Fieldiana Geol, N.S , 45 ( 1514 ) : 1 – 104 .
   Google Scholar
• Rieppel , O . 2001b . Tooth implantation and replacement in Sauropterygia . Paläont Z , 75 ( 2 ) : 207 – 217 .
   Google Scholar
• Rieppel , O . 2002a . Feeding mechanics in Triassic stem-group sauropterygians: the anatomy of a successful invasion of Mesozoic seas . J Linn Soc Lond Zool , 135 ( 1 ) : 33 – 63 .
   Web of Science ®Google Scholar
• Rieppel , O . 2002b . The dermal armor of the cyamodontoid placodonts (Reptilia, Sauropterygia): morphology and systematic value . Fieldiana Geol, N.S , 46 ( 1517 ) : 1 – 41 .
   Google Scholar
• Rieppel , O and Hagdorn , H . 1999 . A skull of Cyamodus kuhnschnyderi Nosotti & Pinna 1993, from the Muschelkalk of Wasselonne (Alsace, France) . Paläont Z , 73 ( 3/4 ) : 377 – 383 .
   Google Scholar
• Rieppel , O and Reisz , RR . 1999 . The origin and early evolution of turtles . Annu Rev Ecol Syst , 30 : 1 – 22 .
   Google Scholar
• Salisbury , SW and Frey , E . 2001 . “ A biomechanical transformation model for the evolution of semi-spheroidal articulations between adjoining vertebral bodies in crocodilians ” . In Crocodilian biology and evolution , Edited by: Grigg , GC , Seebacher , F and Franklin , CE . 85 – 134 . Chipping Norton : Surrey Beatty & Sons .
   Google Scholar
• Sander , PM . 1989 . The pachypleurosaurids (Reptilia: Nothosauria) from the Middle Triassic of Monte San Giorgio (Switzerland) with the description of a new species . Phil Trans R Soc Lond B , 325 ( 1230 ) : 561 – 666 .
   PubMed Web of Science ®Google Scholar
• Scheyer , TM . 2007 . Skeletal histology of the dermal armor of Placodontia: the occurrence of ‘postcranial fibro-cartilaginous bone’ and its developmental implications . J Anat , 211 ( 6 ) : 737 – 753 .
   PubMed Web of Science ®Google Scholar
• Scheyer , TM . 2008 . Aging the oldest turtles: the placodont affinities of Priscochelys hegnabrunnensis . Naturwissenschaften , 95 ( 9 ) : 803 – 810 .
   PubMed Web of Science ®Google Scholar
• Scheyer , TM . 2010 . New interpretation of the postcranial skeleton and overall body shape of the placodont Cyamodus hildegardis Peyer, 1931 (Reptilia, Sauropterygia) . Palaeontologia Electronica , 13 ( 2 ) 15A:15p. Available from: http://palaeo-electronica.org/2010_2/232/index.html
   Web of Science ®Google Scholar
• Seidel , G , ed. 2003 . “ Geologie von Thüringen. 2. Neubearbeitete Auflage ” . 601 Stuttgart : E. Schweizerbart'sche Verlagsbuchhandlung .
   Google Scholar
• Spielmann , JA , Lucas , SG , Rinehart , LF and Heckert , AB . 2008 . The Late Triassic archosauromorph Trilophosaurus . New Mexico Museum Nat Hist Sci Bull , 43 : 1 – 177 .
   Google Scholar
• Throckmorton , GS . 1980 . The chewing cycle in the herbivorous lizard Uromastix aegyptius (Agamidae) . Arch Oral Biol , 25 ( 4 ) : 225 – 233 .
   PubMed Web of Science ®Google Scholar
• Tintori , A . 1995 . Biomechanical fragmentation in shell-beds from the Late Triassic of the Lombardian Basin (Northern Italy). Preliminary report . Rivista Italiana di Paleontologia e Stratigrafia , 101 ( 3 ) : 371 – 380 .
   Google Scholar
• Tintori , A . 2011 . Comment on “The vertebrates of the Anisian/Ladinian boundary (Middle Triassic) from Bissendorf (NW Germany) and their contribution to the anatomy, palaeoecology, and palaeobiogeography of the Germanic Basin reptiles” by C. Diedrich [Palaeogeography, Palaeoclimatology, Palaeoecology 273 (2009) 1–16] . Palaeogeogr Palaeoclimatol Palaeoecol , 300 ( 1–4 ) : 205 – 207 .
   Web of Science ®Google Scholar
• Tintori , A , Schmitz , L , Jiang , D-Y , Lombardo , C and Motani , R . 2006 . Durophagy in Triassic marine vertebrates. Ancient life and modern approaches , Paper presented at: Second International Paleontological Congress; 2006 July 17–21; Beijing, China
   Google Scholar
• Tseng , ZJ and Binder , WJ . 2010 . Mandibular biomechanics of Crocuta crocuta, Canis lupus, and the late Miocene Dinocrocuta gigantea (Carnivora, Mammalia) . J Linn Soc Lond Zool , 158 ( 3 ) : 683 – 696 .
   Web of Science ®Google Scholar
• Vanzolini , PE . 1961 . Notas bionomicas sóbre Dracaena guianesis no Pará (Sauria, Teiidae) . Pap Avulsos Zool , 14 ( 25 ) : 237 – 241 .
   Google Scholar
• Vogt C. 1983. Evolutive Palokologie der Placodontier (Placodus, Henodus; Euryapsida, Trias) [Doctoral dissertation]. [Tübingen]: Eberhard-Karls-Universität, Tübingen, Germany. p. 99.
   Google Scholar
• Westphal , F . 1976 . “ The dermal armour of some Triassic placodont reptiles ” . In Linnean society symposium series No. 3. Morphology and biology of reptiles , Edited by: Bellairs , Ad'A and Cox , CB . 31 – 41 . London : Academic Press .
   Google Scholar
• Westphal , F . 1988 . “ Pflasterzahnsaurier (Placodonten) aus dem süddeutschen Muschelkalk (Mitteltrias) ” . In Neue Forschungen zur Erdgeschichte von Crailsheim. Zur Erinnerung an Hofrat Richard Blezinger (Sonderbände der Gesellschaft für Naturkunde in Württemberg. Band 1) , Edited by: Hagdorn , H . 151 – 165 . Stuttgart : Goldschneck-Verlag Werner K. Weidert .
   Google Scholar
• Zhao , L-J , Li , C , Liu , J and He , T . 2008 . A new armored placodont from the Middle Triassic of Yunnan Province, southwestern China . Vertebrata PalAsiatica , 46 ( 3 ) : 171 – 177 .
   Google Scholar