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Reconstruction of the skull and description of new anatomical features of Diadectes absitus (Diadectidae, Diadectomorpha) from the early Permian of central Germany

Published online by Cambridge University Press:  10 October 2022

Jozef KLEMBARA Open the ORCID record for Jozef KLEMBARA [Opens in a new window] ,
David S BERMAN ,
Amy C. HENRICI ,
Thomas MARTENS  and
Miroslav HAIN
Jozef KLEMBARA*
Affiliation:
Faculty of Natural Sciences, Department of Ecology, Laboratory of Evolutionary Biology, Comenius University in Bratislava, Ilkovičova 6, 842 15 Bratislava, Slovakia. Institute of Measurement Science, Slovak Academy of Sciences, Dúbravská cesta 9, 841 04 Bratislava, Slovakia.
David S BERMAN
Affiliation:
Carnegie Museum of Natural History, Section of Vertebrate Paleontology, 4400 Forbes Avenue, Pittsburgh, PA 15213, USA.
Amy C. HENRICI
Affiliation:
Carnegie Museum of Natural History, Section of Vertebrate Paleontology, 4400 Forbes Avenue, Pittsburgh, PA 15213, USA.
Thomas MARTENS
Affiliation:
Museum der Natur, Stiftung Schloss Friedenstein, Gotha, Germany.
Miroslav HAIN
Affiliation:
Institute of Measurement Science, Slovak Academy of Sciences, Dúbravská cesta 9, 841 04 Bratislava, Slovakia.
*
*Corresponding author. Email: jozef.klembara@uniba.sk
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Abstract

Presented for the first time is a reconstruction of the skull of Diadectes (Diadectomorpha) based on several specimens of a single species Diadectes absitus from the early Permian of central Germany. Since its first discovery at the end of the 19th century the only reconstructions of the skull of Diadectes were without specific designation, despite a rich Permo-Carboniferous fossil record. The skull of D. absitus is reconstructed in dorsal, lateral, posterior, and ventral views and includes exocranial and endocranial elements. The reconstructions of Diadectes presented here are compared with those of all other authors, and the differences are analysed and discussed. The comparisons recognised three features not recorded in other species of Diadectes: (1) anterior and posterior margins of the transverse process of the pterygoid parallel one another; (2) the angle between the posterior margin of the transverse process and the lateral margin of the quadrate ramus of the pterygoid is sharply defined; and (3) the anterior ventral margin of the transverse process of the pterygoid bears a distinct sharp ridge. These characters are discussed in the context of the skull anatomy of Diadectes and inaccuracies in previous cranial reconstructions of the genus are rectified.

Keywords

central Europecranial skeletonearly tetrapodsmorphology
Type
Articles
Information
Earth and Environmental Science Transactions of The Royal Society of Edinburgh , Volume 113 , Issue 3 , September 2022 , pp. 267 - 278
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Copyright
Copyright © The Author(s), 2022. Published by Cambridge University Press on behalf of The Royal Society of Edinburgh

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References

7. References

Berman, D. S. 2000. Origin and early evolution of the amniote occiput. Journal of Paleontology 74, 938–56.2.0.CO;2>CrossRefGoogle Scholar
Berman, D. S. 2013. Diadectomorphs, amniotes or not? In Lucas, S. G., DiMichele, V. A., Barrick, J. E., Schneider, J. W. & Spielmann, J. A. (eds) The Carboniferous–Permian Transition, 60, 22–35. Albuquerque, New Mexico: New Mexico Museum of Natural History, Science Bulletin.Google Scholar
Berman, D. S., Henrici, A. C., Kissel, R. A., Sumida, S. S. & Martens, T. 2004. A new diadectid (Diadectomorpha), Orobates pabsti, from the Early Permian of central Germany. Bulletin of Carnegie Museum of Natural History 35, 1–36.CrossRefGoogle Scholar
Berman, D. S., Reisz, R. R. & Scott, D. 2010. Redescription of the skull of Limnoscelis paludis Williston (Diadectomorpha: Limnoscelidae) from the Pennsylvanian of Cañon del Cobre, Northern New Mexico. New Mexico Museum of Natural History, Science Bulletin 49, 185–210.Google Scholar
Berman, D. S., Sumida, S. S. & Lombard, R. E. 1992. Reinterpretation of the temporal and occipital regions in Diadectes and the relationships of diadectomorphs. Journal of Paleontology 66, 481–99.CrossRefGoogle Scholar
Berman, D. S., Sumida, S. S. & Martens, T. 1998. Diadectes (Diadectomorpha: Diadectidae) from the early Permian of central Germany, with description of a new species. Annals of Carnegie Museum 67, 53–93.CrossRefGoogle Scholar
Case, E. C. 1908. Description of vertebrate fossils from the vicinity of Pittsburgh, Pennsylvania. Annals of Carnegie Museum 4, 234–41.CrossRefGoogle Scholar
Case, E. C. & Williston, S. W. 1912. A description of the skulls of Diadectes lentus and Animasaurus carinatus. American Journal of Science 33, 339–48.CrossRefGoogle Scholar
Cope, E. D. 1878. Descriptions of extinct Batrachia and Reptilia from the Permian formation of Texas. Proceedings of American Philosophical Society 17, 505–30.Google Scholar
Cope, E. D. 1896. Second contribution to the history of the Cotylosauria. Proceedings of the American Philosophical Society 35, 122–39.Google Scholar
Gregory, W. K. 1946. Pareiasaurs versus placodonts as near ancestors to the turtles. American Museum of Natural History Bulletin 86, 281–326.Google Scholar
Kissel, R. 2010. Morphology, phylogeny, and evolution of Diadectidae (Cotylosauria: Diadectomorpha). DPhil Thesis, University of Toronto, Canada.Google Scholar
Klembara, J. 1995. Some cases of fused and concrescent exocranial bones in the Lower Permian seymouriamorph tetrapod Discosauriscus Kuhn 1933. In Goujet, D., Janvier, P. & Poplin, C. (eds.) Premiers Vertébrés et Vertébrés Inférieurs, Geobios, M.S., 19, 263–7.Google Scholar
Klembara, J. 1997. The cranial anatomy of Discosauriscus Kuhn, a seymouriamorph tetrapod from the Lower Permian of the Boskovice Furrow (Czech Republic). Philosophical Transactions of the Royal Society of London B 352, 257–302.CrossRefGoogle Scholar
Klembara, J., Hain, M., Čerňanský, A., Berman, D. S. & Henrici, A. C. 2020b. Anatomy of the neural endocranium and stapes of Diadectes absitus (Diadectomorpha) from the early Permian of Germany based on the high-resolution X-ray microcomputed tomography. Anatomical Record 303, 2951–3170.CrossRefGoogle ScholarPubMed
Klembara, J., Hain, M., Ruta, M., Berman, D. S., Pierce, S. & Henrici, A. C. 2020a. Inner ear morphology of diadectomorphs and seymouriamorphs (Tetrapoda) recovered by high-resolution X-ray microcomputed tomography, and the origin of the amniote crown group. Palaeontology 63, 131–54.CrossRefGoogle Scholar
Lewis, G. E. & Vaughn, P. P. 1965. Early Permian vertebrates from the Cutler Formation of the Placerville area, Colorado. Geological Survey Professional Papers 503c, 1–46.Google Scholar
Moss, J. L. 1972. The morphology and phylogenetic relationships of the Lower Permian tetrapod Tseajaia campi Vaughn (Amphibia: Seymouriamorpha). University of California Publications, Geological Sciences 98, 1–72.Google Scholar
Olson, E. C. 1947. The family Diadectidae and its bearing on the classification of reptiles. Fieldiana Geology 11, 1–53.Google Scholar
Olson, E. C. 1950. The temporal region of the Permian reptile Diadectes. Fieldiana Geology 10, 63–77.Google Scholar
Reisz, R. R. 2006. Origin of dental occlusion in tetrapods: signal for terrestrial vertebrate evolution? Journal of Experimental Zoology (Molecular and Developmental Evolution) 306B, 261–77.CrossRefGoogle Scholar
von Huene, F. 1913. The skull elements of the Permian Tetrapoda in the American Museum of Natural History, New York. American Museum of Natural History Bulletin 32, 315–86.Google Scholar
Watson, D. M. S. 1954. On Bolosaurus and the origin and classification of reptiles. Bulletin of the Museum of Comparative Zoology, Harvard College 111, 295–449.Google Scholar