Hemipneustidae
Hemipneustidae is an extinct family of sea urchins.[1][2]
| Hemipneustidae | |
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| Fossils of Toxopatagus | |
| Scientific classification | |
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| Phylum: | |
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| Family: | Hemipneustidae Lambert 1917 |
Genera
- Hemipneustes L. Agassiz, 1835 †
- Medjesia Jeffery, 1997 †
- Opisopneustes Gauthier, 1889 †
- Plesiohemipneustes Smith & Wright, 2003 †
- Toxopatagus Pomel, 1883 †
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