The shell morphology of the latest Cretaceous (Maastrichtian) trionychid turtle Helopanoplia distincta

Background Helopanoplia distincta is an extinct soft-shelled turtle (Pan-Trionychidae) for which the type specimen is a fragmentary costal and the inguinal notch portion of the left hypoplastron from the Late Cretaceous (Maastrichtian) Lance Formation of Wyoming, USA that bear a distinct surface scu...

Full description

Bibliographic Details
Main Authors: Walter G. Joyce, Tyler R. Lyson
Format: Article
Language:English
Published: PeerJ Inc. 2017-12-01
Series:PeerJ
Subjects:
Online Access:https://peerj.com/articles/4169.pdf