Sexual dimorphism in mid-Cretaceous hemiasterid echinoids

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Sexual dimorphism in mid-Cretaceous hemiasterid echinoids

  • Volume / Part: 36 / 2
  • Publication Date: July 1993
  • Page(s): 311 - 317
  • Authored By: Didier Néraudeau

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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.

Palaeontology - Volume 36 Part 2 Pages 311-317



Palaeontology - Volume 36 Part 2 Pages 311-317

Citations

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