A new species of Umbilia Jousseaume, 1884 (Mollusca, Cypraeidae) from the Pliocene fauna of the Roe Plains, Western Australia

By

Southgate, Paul
Militz, Thane A

Type

Article

Date of Publication

2023

Original Publication

ZooKeys

Volume

1169

Pages

1--13

Subjects

cowrie , cowry , fossil , Roe Calcarenite , taxonomy , Umbilia tomdarraghi sp. nov

Contributed by

Pensoft Publishers

Language

English

Published by

Sofia, Bulgaria Pensoft Publishers

Identifiers

DOI: https://doi.org/10.3897/zookeys.1169.106338

 

Abstract

A new morphologically distinct species of cowry (family Cypraeidae Rafinesque, 1815) is described from the Late Pliocene Roe Calcarenite of the Roe Plains, Western Australia. Previously assigned to Umbilia hesitata (Iredale, 1916), the new species differs morphometrically from related taxa and is differentiated from U. hesitata by a number of shell features including a prominent, projecting protoconch, less extended posterior and anterior terminals, coarser columellar teeth extending onto the base, and well-developed, thickened anterior flanges, supporting a rounded anterior extremity with blunt anterior tips. Umbilia tomdarraghi sp. nov. is the third Umbilia species to be described from the Pliocene.