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      The anatomy of the palate in Early Triassic Chaohusaurus brevifemoralis (Reptilia: Ichthyosauriformes) based on digital reconstruction

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      PeerJ
      PeerJ Inc.
      Chaohusaurus brevifemoralis, Early Triassic, Palate, Ichthyosauriformes, CT scanning

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          Abstract

          The palatal anatomy of ichthyosauriforms remains largely unknown. Here, the complete palate of the early-branching ichthyosauriform Chaohusaurus brevifemoralis is reconstructed and described for the first time with the assistance of high-resolution X-ray computed tomography (CT) scanning on the basis of the three-dimensionally preserved skull of its paratype (GMPKU-P-3086) from the Lower Triassic of South China. The reconstruction reveals new palatal features of C. brevifemoralis. The palatine contacts the jugal directly, which is observed in ichthyosauriforms for the first time. A single row of denticles is present on each side of the palate. The vomer exceeds the anterior and posterior margins of the internal naris. The pterygoid is posterior to the internal naris. The epipterygoid is present and the ectopterygoid is absent.

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          Most cited references57

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          Classification and phylogeny of the diapsid reptiles

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            Phylogeny of the Ichthyopterygia

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              Cranial morphology of Platypterygius longmani Wade, 1990 (Reptilia: Ichthyosauria) from the Lower Cretaceous of Australia

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                Author and article information

                Contributors
                Journal
                PeerJ
                PeerJ
                PeerJ
                PeerJ
                PeerJ
                PeerJ Inc. (San Diego, USA )
                2167-8359
                6 July 2021
                2021
                : 9
                Affiliations
                [1 ]Department of Geology and Geological Museum, Peking University , Beijing, China
                [2 ]State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology and Center for Excellence in Life and Paleoenvironment, Chinese Academy of Sciences , Nanjing, China
                Article
                11727
                10.7717/peerj.11727
                8269639
                34268013
                2f6bf666-9fbb-4f77-a9e0-1a03d3c12e6f
                © 2021 Yin et al.

                This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, reproduction and adaptation in any medium and for any purpose provided that it is properly attributed. For attribution, the original author(s), title, publication source (PeerJ) and either DOI or URL of the article must be cited.

                Funding
                Funded by: National Natural Science Foundation of China
                Award ID: 41920104001, 41972003, 41572008, 41372016 and 40920124002
                Funded by: Ministry of Science and Technology
                Award ID: 2016YFC0503301
                Funded by: Strategic Priority Research Program of Chinese Academy of Sciences
                Award ID: XDB26000000
                Funded by: Alliance of Beijing University and College Museums
                This project was funded by the following grants: Projects 41920104001, 41972003, 41572008, 41372016 and 40920124002 from the National Natural Science Foundation of China, Grant 2016YFC0503301 from the Ministry of Science and Technology, Grant XDB26000000 from the Strategic Priority Research Program of Chinese Academy of Sciences, and a grant from the Alliance of Beijing University and College Museums. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.
                Categories
                Evolutionary Studies
                Paleontology
                Taxonomy
                Zoology

                chaohusaurus brevifemoralis,early triassic,palate,ichthyosauriformes,ct scanning

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