Hemicidaridae
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Hemicidaridae
Wright, 1857 †
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Hemicidaridae is a family of fossils sea urchins in the classis Echinoidea.
These epifaunal grazer-deposit feeders lived in Jurassic and Cretaceous ages (from 189.6 to 112.6 Ma).[1]
Taxonomy
List of genera and subfamilies:[2][3]
- Subfamily Hemicidarinae Wright, 1857 †
- Asterocidaris Cotteau, 1859 †
- Gymnocidaris L. Agassiz, 1838 †
- Hemicidaris L. Agassiz, 1838 †
- Subfamily Pseudocidarinae Smith & Wright, 1993 †
- Cidaropsis Cotteau, 1863 †
- Pseudocidaris Pomel, 1883 †
- Gymnocidaris L. Agassiz, 1838 †
- Hemicidaris (Sphaerotiaris) Lambert & Thiéry, 1914 †
Distribution
Fossils of species within this genus have been found in the Jurassic and Cretaceous sediments in Europe, Africa, North America and China.[1]
References
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