Diagnostic Features |
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Distribution | Lower Jurassic (Sinemurian), USA. |
Name gender | masculine |
Type | Plesiechinus hawkinsi Jesionek-Szymanska, 1970, p. 416, by original designation. Holotype, University of California Berkeley, Museum of Palaeontology D5510 |
Species Included |
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Classification and/or Status |
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Remarks | Distinguished from Pygaster by its small, compact apical disc. |