Aetobarbakinoides

Source: Wikipedia, the free encyclopedia.

Aetobarbakinoides
Temporal range:
Ma
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Reptilia
Clade: Archosauria
Clade: Pseudosuchia
Order: Aetosauria
Family:
Stagonolepididae
Genus: Aetobarbakinoides
Desojo et al., 2012
Type species
Aetobarbakinoides brasiliensis
Desojo et al., 2012

Aetobarbakinoides is an

typothoracisines, two derived clades of aetosaurs.[1]

Discovery

Aetobarbakinoides is known only from the

Description

Aetobarbakinoides is known from neck and back vertebrae, ribs, and several limb bones including the scapula, humerus, tibia, and foot bones. Paramedian osteoderms overlying the midline of the back and neck are also known. Most of the distinguishing features of Aetobarbakinoides are found in its vertebrae. Laterally-oriented projections on the neck vertebrae called prezygapophyses are longer and wider than those of many other aetosaurs. In contrast, the prezygapophyses of the vertebrae at the base of the tail are very thin. The humerus and tibia are large relative to the axial skeleton. The vertebrae of Aetobarbakinoides are more similar to those of Desmatosuchus than they are to its closest relatives, Aetosauroides and Neoaetosaurioides. Aetobarbakinoides is a medium-sized aetosaur, it has been estimated to have been about 2 m (6.6 ft) in total length.[1]

Classification

A

Typothoracisinae. In most studies, Typothoracisinae is placed in the subfamily Aetosaurinae, while Desmatosuchinae makes up its own subfamily of aetosaurs. This study suggests that Aetosaurinae is paraphyletic, and that aetosaurines represent a grade of early aetosaurs that developed into desmatosuchines and typothoracisines later in the Triassic. The following cladogram simplified after an analysis presented by Julia B. Desojo, Martin D. Ezcurra and Edio E. Kischlat (2012).[1]

Aetosauria

Etymology

Aetobarbakinoides was first named by

Buteo rufinus) and from Latin oides meaning "form". It refers to its elongated humerus and tibia and the close relation to the "eagle reptile", Aetosaurus. The specific name refers to Brazil, the country in which the holotype was found.[1]

References