... Drs. Chris Bennett, Junchang Lü, Eberhard Frey, and Taissa Rodrigues provided fundamental com... more ... Drs. Chris Bennett, Junchang Lü, Eberhard Frey, and Taissa Rodrigues provided fundamental comments on many drafts of this paper. ... Comparison avec les bassins ouest-africains situes dans le meme contexte: in Dde A. Campos, MSS Viana, PM Brito, G. Beurlen eds.Atas do ...
Based on one of the first cranial pterosaur specimens unearthed from the Romualdo Formation (Arar... more Based on one of the first cranial pterosaur specimens unearthed from the Romualdo Formation (Araripe Basin), Cearadactylus atrox has caused disagreement among paleontologists regarding its relationships. Ranging from an ornithocheirid, an indeterminated pterodactyloid, to a ctenochasmatid, some authors even regarded this species as represent- ing a distinct suprageneric clade. Further preparation of the holotype that was transferred to the collections of the Museu Nacional/UFRJ (MN 7019-V) revealed several new features allowing a redescription and reevaluation of the phylogenetic position of this species. Among the new observations, it is clear that the rostral end of this specimen had been glued to the skull, rendering previous anatomical interpretations incorrect. There is no rostral gap, and the expanded rostral end of the premaxillae is larger than the dentary, rather than smaller. Cearadactylus atrox is here considered a valid taxon that can be diagnosed by a dentary groove that bifurcates at the rostral end, orbit and naris in a high position relative to the nasoantor- bital fenestra, and a comparatively small number of teeth (32–36 maxillary, 22–26 mandibular), decreasing in size towards the posterior end. Phylogeneticaly, it is placed as the sister group of the Anhangueridae, forming a large clade of Brazilian forms (Tropeognathus and Anhanguera), which has a European taxon (‘Ornithocheirus’ compressirostris) as its sister group.
... Drs. Chris Bennett, Junchang Lü, Eberhard Frey, and Taissa Rodrigues provided fundamental com... more ... Drs. Chris Bennett, Junchang Lü, Eberhard Frey, and Taissa Rodrigues provided fundamental comments on many drafts of this paper. ... Comparison avec les bassins ouest-africains situes dans le meme contexte: in Dde A. Campos, MSS Viana, PM Brito, G. Beurlen eds.Atas do ...
Based on one of the first cranial pterosaur specimens unearthed from the Romualdo Formation (Arar... more Based on one of the first cranial pterosaur specimens unearthed from the Romualdo Formation (Araripe Basin), Cearadactylus atrox has caused disagreement among paleontologists regarding its relationships. Ranging from an ornithocheirid, an indeterminated pterodactyloid, to a ctenochasmatid, some authors even regarded this species as represent- ing a distinct suprageneric clade. Further preparation of the holotype that was transferred to the collections of the Museu Nacional/UFRJ (MN 7019-V) revealed several new features allowing a redescription and reevaluation of the phylogenetic position of this species. Among the new observations, it is clear that the rostral end of this specimen had been glued to the skull, rendering previous anatomical interpretations incorrect. There is no rostral gap, and the expanded rostral end of the premaxillae is larger than the dentary, rather than smaller. Cearadactylus atrox is here considered a valid taxon that can be diagnosed by a dentary groove that bifurcates at the rostral end, orbit and naris in a high position relative to the nasoantor- bital fenestra, and a comparatively small number of teeth (32–36 maxillary, 22–26 mandibular), decreasing in size towards the posterior end. Phylogeneticaly, it is placed as the sister group of the Anhangueridae, forming a large clade of Brazilian forms (Tropeognathus and Anhanguera), which has a European taxon (‘Ornithocheirus’ compressirostris) as its sister group.
Uploads
Papers by Bruno C Vila Nova