Busca avançada
Ano de início
Entree
(Referência obtida automaticamente do SciELO, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

A SUBADULT MAXILLA OF A TYRANNOSAURIDAE FROM THE TWO MEDICINE FORMATION, MONTANA, UNITED STATES

Texto completo
Autor(es):
RAFAEL DELCOURT
Número total de Autores: 1
Tipo de documento: Artigo Científico
Fonte: Papéis Avulsos de Zoologia (São Paulo); v. 57, n. 9, p. -, 2017.
Resumo

ABSTRACT Daspletosaurus is a Campanian genus of Tyrannosauridae from North America. This genus occupied the same geographic area of Albertosaurus, but remains of Albertosaurus are more abundant than Daspletosaurus. Here is described a subadult maxilla (AMNH FARB 5477) of Daspletosaurus sp. from Montana (USA) and possibly from the Two Medicine Formation. The description is based on Carr (1999) that described cranial ontogenetic variations in tyrannosaurids. The maxilla belongs to the ontogenetic Stage 3 sensu Carr (1999), in which the maxilla is thick, the lateral surface of the bone well sculptured, and the maxillary fenestra is subcircular and well separated from the anterior edge of antorbital fossa. Possibly there were more than one species of Daspletosaurus and the locality of the here described subadult specimen suggests that Daspletosaurus species occurred more southern than Albertosaurus. (AU)

Processo FAPESP: 12/09370-2 - Evolução morfológica de Ceratosauria e Tyrannosauroidea (Dinosauria: Theropoda)
Beneficiário:Rafael Delcourt de Seixas Ferreira
Linha de fomento: Bolsas no Brasil - Doutorado