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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

A taxonomic and phylogenetic review of the anhanguerid pterosaur group Coloborhynchinae and the new Glade Tropeognathinae

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Holgado, Borja [1, 2] ; Pegas, V, Rodrigo
Total Authors: 2
[1] Univ Fed Rio de Janeiro, Museu Nacl, Dept Geol & Paleontol, Lab Systemat & Taphon Fossil Vertebrates, Quinta da Boa Vista S-N, BR-20940040 Rio De Janeiro, RJ - Brazil
[2] Univ Autonoma Barcelona, Inst Catala Paleontol Miquel Crusafont, E-08193 Barcelona, Catalonia - Spain
Total Affiliations: 2
Document type: Review article
Source: ACTA PALAEONTOLOGICA POLONICA; v. 65, n. 4, p. 743-761, 2020.
Web of Science Citations: 0

Anhanguerids are a particular group of pterodactyloid pterosaurs, characterized mainly by their rostral sagittal crests, well laterally expanded jaw tips and enlarged anterior teeth. Due to the fragmentary nature of most known specimens, including holotypes, the taxonomy of the group has proved particularly difficult and controversial. Coloborhynchinae is a recently proposed clade within the Anhangueridae, and was defined as the most inclusive clade containing Coloborhynchus clavirostris but not Anhanguera or Ludodactylus. Coloborhynchinae was originally thought to include Coloborhynchus, Uktenadactylus, and Sitvccoptetyx. Here we present a reassessment of the taxonomy and phylogeny of all proposed members of the Coloborhynchinae and Coloborhynchus complex, with new anatomical comparisons and a novel phylogenetic analysis. Several features allow us to establish that coloborhynchines were much more diverse than previously thought, englobing four genera and seven species: Aerodraco sedgwickii gen. et comb. nov., Coloborhynchus clavirostris, Nicorhynchus capito gen. et comb. nov., Nicorhynchus fluviferox gen. et comb. nov., Uktenadactylus rodriguesae sp. nov., and Ukrenadacodus wadleighi. Nicorhynchus and Uktenadactylus are considered sister taxa, being distinct on the basis of several rostral characters. Although with a homoplastic flat rostrum surface, Sitvccoptetyx was recovered out of the Coloborhynchinae, as sister taxon of Tropeognathus, due to similarities on the palatal ridge (which is broad and deep, and starting at the same level) and the relatively stout teeth compared to other anhanguerids. Tropeognathus and Siroccopteryx are further related to the Australian taxa Ferrrxlraco and Alythunga, which are all grouped in a new Glade: the Tropeognathinae. Our analysis suggests that morphological evolution within anhanguerids was quite more complex than previously thought, with coloborhynchines representing the oldest recorded lineage of Anhangueridae, which achieved a worldwide distribution at least from the Aptian to the Cenomanian. (AU)

FAPESP's process: 19/10231-6 - Stance biomechanis of the wing during flight in Anhanguera piscator and Tupuxuara leonardii (Pterosauria: Pterodactyloidea) and considerations on the evolution of flight within the group
Grantee:Rodrigo Vargas Pêgas
Support type: Scholarships in Brazil - Doctorate