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Musculature and Asymmetry in a Carboniferous Pseudo‐Bellerophontoidean Gastropod (Mollusca)
Author(s) -
Peel John S.
Publication year - 2001
Publication title -
palaeontology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.69
H-Index - 63
eISSN - 1475-4983
pISSN - 0031-0239
DOI - 10.1111/1475-4983.00175
Subject(s) - carboniferous , paleontology , mollusca , anatomy , biology , geology , ontogeny , bilateral symmetry , asymmetry , scars , zoology , physics , mechanical engineering , medicine , genetics , structural basin , engineering , surgery , quantum mechanics
A single pair of well‐preserved muscle attachment scars showing excellent detail on the umbilical surface is described in a supposed bellerophontoidean gastropod from the Carboniferous of Britain. Ontogenetic study reveals that the bilateral symmetry of the thick‐shelled adult masks an anisometric early growth stage, indicating that the gastropod is a pleurotomarioidean vetigastropod masquerading as a bellerophontoidean.