Hemipneustes leymeriei
| Hemipneustes Temporal range: Cretaceous |
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| Fossil of Hemipneustus oculatus from Belgium, on display at Galerie de paléontologie et d'anatomie comparée in Paris | |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Echinodermata |
| Class: | Echinoidea |
| Superorder: | Atelostomata |
| Order: | Holasteroida |
| Family: | Holasteridae |
| Genus: |
Hemipneustes L. Agassiz, 1836 |
Hemipneustes is an extinct genus of sea urchins belonging to the family Holasteridae.
These semi-infaunal detritivores lived during the Upper Cretaceous period, from 70.6 to 66.043 Ma. Fossils of this genus have been found in the sediments of Netherlands, Belgium, Bulgaria, India, Iran, the Netherlands, Oman and Spain.
Hemipneustes is a quite large sea urchin with a high-domed profile and a well-defined anterior sulcus.
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