Cranial osteology and phylogenetic position of the theropod dinosaurProceratosaurus bradleyi(Woodward, 1910) from the Middle Jurassic of England
| العنوان: | Cranial osteology and phylogenetic position of the theropod dinosaurProceratosaurus bradleyi(Woodward, 1910) from the Middle Jurassic of England |
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| المؤلفون: | Scott Moore-Fay, Angela C. Milner, Oliver W. M. Rauhut |
| المصدر: | Zoological Journal of the Linnean Society. 158:155-195 |
| بيانات النشر: | Oxford University Press (OUP), 2010. |
| سنة النشر: | 2010 |
| مصطلحات موضوعية: | Tyrannosauroidea, Osteology, biology, Dentition, Coelurosauria, Anatomy, biology.organism_classification, Skull, Paleontology, medicine.anatomical_structure, Proceratosauridae, stomatognathic system, Guanlong, medicine, Animal Science and Zoology, Proceratosaurus, Ecology, Evolution, Behavior and Systematics |
| الوصف: | The cranial osteology of the small theropod dinosaur Proceratosaurus from the Bathonian of Minchinhampton, England, is described in detail, based on new preparation and computed tomography (CT) scan images of the type, and only known, specimen. Proceratosaurus is an unusual theropod with markedly enlarged external nares and a cranial crest starting at the premaxillary–nasal junction. The skull is highly pneumatic, with pneumatized nasals, jugals, and maxillae, as well as a highly pneumatic braincase, featuring basisphenoid, anterior tympanic, basipterygoid, and carotid recesses. The dentition is unusual, with small premaxillary teeth and much larger lateral teeth, with a pronounced size difference of the serrations between the mesial and distal carina. The first dentary tooth is somewhat procumbent and flexed anteriorly. Phylogenetic analysis places Proceratosaurus in the Tyrannosauroidea, in a monophyletic clade Proceratosauridae, together with the Oxfordian Chinese taxon Guanlong. The Bathonian age of Proceratosaurus extends the origin of all clades of basal coelurosaurs back into the Middle Jurassic, and provides evidence for an early, Laurasia-wide, dispersal of the Tyrannosauroidea during the late Middle to Late Jurassic. © 2009 The Linnean Society of London, Zoological Journal of the Linnean Society, 2009. |
| تدمد: | 1096-3642 0024-4082 |
| DOI: | 10.1111/j.1096-3642.2009.00591.x |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::31eded3df1f1b4da4aab9fd85f917151 https://doi.org/10.1111/j.1096-3642.2009.00591.x |
| Rights: | OPEN |
| رقم الانضمام: | edsair.doi...........31eded3df1f1b4da4aab9fd85f917151 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 10963642 00244082 |
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| DOI: | 10.1111/j.1096-3642.2009.00591.x |