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Diagnostic Features
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All five genital plates perforated by a gonopore.
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Aboral plating highly ornamented with sutural pits.
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Single primary interambulacral tubercle centrally placed on each aboral interambulacral plate; multiple tubercles on adoral plates.
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Ambulacra as in Coenholectypus.
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Periproct relatively small and opening midway between the peristome and posterior margin.
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Distribution
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Late Cretaceous (Cenomanian, Maastrichtian); Spain and the Middle East
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| Name gender |
masculine |
| Type |
Coptodiscus nomiae Cotteau & Gauthier, 1895, p. 77, by monotypy.
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| Species Included |
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Coptodiscus nomiae Cotteau & Gauthier, 1895; Campanian-Maastrichtian, Iran, Arabian Peninsula
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C. mengaudi Lambert, 1919; Late Cenomanian, Santander, Spain
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| Classification and/or Status |
Holectypoida, Holectypidae, Coenholectypinae
Presumed monophyletic
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| Remarks |
An easily recognisable genus on account of its highly distinctive ornamentation. Temnholectypus was suggested as a synonym, having pits scattered over its aboral surface according to Lambert & Thiery (1911, p. 280). However, this feature was not noted in the original description or figures given for the type species of Temnholectypus. Consequently Temnholectypus is here treated as a distinct genus.
Cotteau, G. H. & Gauthier, V. 1895. Mission scientifique en Perse par J. de Morgan; études géologiques des échinides fossiles. Volume 3, 1-107. E. Leroux, Paris.
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