A new Cretaceous Pleurodira Pelomedusoides from the Lower Cretaceous of Parnaíba Basin, Brazil

The new Pleurodira turtle Itapecuruemys amazonensis gen. et sp. nov. from the Itapecuru Formation (Parnaíba Basin, Brazil) is described. The new species is represented only by its holotype, which consists of an almost complete carapace and plastron, with an oval-shaped outline. The most peculiar cha...

Full description

Saved in:
Bibliographic Details
Published in:Journal of South American earth sciences 2021-01, Vol.105, p.102872, Article 102872
Main Authors: Batista, Diogo Lins, Carvalho, Ismar de Souza, de la Fuente, Marcelo S.
Format: Article
Language:English
Subjects:
Brazil
Lower Cretaceous
Parnaíba basin
Pelomedusoides
Pleurodira
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The new Pleurodira turtle Itapecuruemys amazonensis gen. et sp. nov. from the Itapecuru Formation (Parnaíba Basin, Brazil) is described. The new species is represented only by its holotype, which consists of an almost complete carapace and plastron, with an oval-shaped outline. The most peculiar characters of Itapecuruemys amazonensis are: neural plates six and seven are separated by costal six, and the seventh neural plate contacts the sixth, seventh and eighth costal plates and a suprapygal. The phylogenetic hypothesis proposed in this paper suggests that Itapecuruemys amazonensis, together with Cearachelys and Galianemys spp., form a monophyletic assemblage and also widen the paleoherpetological diversity of the Itapecuru Formation in the Parnaíba Basin (Brazil). •A new species of Pleurodira from theItapecuru Formation (Parnaíba Basin, Lower Cretaceous).•The new pleurodira presents a gap in the neural series and seventh neural bone with seven sides.•Increase in the diversity of Brazilian fossil chelonians.•The new species allows a better understanding of the paleoenvironments and paleobiogeographic distribution of the Aptian Pleurodira.
ISSN:0895-9811
1873-0647
DOI:10.1016/j.jsames.2020.102872