New Interpretation of the Palate of Pterosaurs

作者: Attila Ősi , Edina Prondvai , Eberhard Frey , Burkhardt Pohl

DOI: 10.1002/AR.21053

关键词: AnatomyMaxillaHard palateBiologyAperture (mollusc)

摘要: On the basis of a new, three-dimensionally preserved specimen Early Jurassic pterosaur Dorygnathus banthensis we present reinterpretation palate. The hard palate is formed by extensive palatal plate maxilla and not palatine as has been generally reconstructed. This emarginates choana rostrally rostrolaterally in other archosaurs lepidosaurs. longitudinally elongate dorsoventrally flat an isolated bone caudal to morphologically topographically it resembles that crocodilians birds, respectively. separates laterally from suborbital fenestra demonstrating homologous nature (primary) all Our study indicates basal pterosaurs pterygo-ectopterygoid existed fenestra, which became confluent with adductor chamber pterodactyloids thereby increasing relative size hence mass jaw adductors. was relatively small compared interpterygoid vacuity. With rostroventral inclination quadrates more derived pterosaurs, vacuity reduced considerably, whereas increased size. exceptional also shows hitherto unknown pair fenestrae situated at contact premaxilla-maxilla might represent aperture for vomeronasal organ.

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