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Osteology and systematics of Uberabatitan ribeiroi (Dinosauria; Sauropoda): a Late Cretaceous titanosaur from Minas Gerais, Brazil

2019; Q15088586; Volume: 4577; Issue: 3 Linguagem: Inglês

10.11646/zootaxa.4577.3.1

ISSN

1175-5334

Autores

JULIAN C. G. JUNIOR SILVA, Thiago da Silva Marinho, Agustín G. Martinelli, Max C. Langer,

Tópico(s)

Ichthyology and Marine Biology

Resumo

Uberabatitan ribeiroi is a Late Cretaceous titanosaur (Dinosauria, Sauropoda) from southeastern Brazil. Here we provide a detailed revision of all its available specimens, including new elements from the type-locality. One new autopomorphy is added to diagnosis of the taxon: astragalus with a well-developed anteroposterior crest that mediodistally delimits the tibial articulation. Linear regressions were conducted in an attempt to circumscribe specimens within the type-series, revealing that it is composed of several individuals, with inferred total body lengths varying from 7 to 26 meters. Phylogenetic analyses including U. ribeiroi show that the Brazilian taxon corresponds to a non-saltasaurid lithostrotian titanosaur.

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