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Article: Sexual dimorphism in mid-Cretaceous hemiasterid echinoids

Publication: Palaeontology
Volume: 36
Part: 2
Publication Date: July 1993
Page(s): 311 – 317
Author(s): Didier Néraudeau
DOI:
Addition Information

How to Cite

NÉRAUDEAU, D. 1993. Sexual dimorphism in mid-Cretaceous hemiasterid echinoids. Palaeontology, 36, 2, 311–317.

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Palaeontology - Volume 36 Part 2 Pages 311-317

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Abstract

Fossil hemiasterid echinoids of Hemiaster (Leymeriaster) are sexually dimorphic, females having wider gonopores than males. No other conspicuous morphological differences permit the two sexes to be distinguished, but in certain populations females achieve larger sizes than males and consequently seem hypermorphic.
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