Hemicidaridae

Hemicidaridae
Temporal range: Jurassic- Cretaceous
Fossil of Asterocidaris species
Scientific classification
Kingdom: Animalia
Phylum: Echinodermata
Class: Echinoidea
Subclass: Euechinoidea
Infraclass: Carinacea
Family: Hemicidaridae
Wright, 1857 †
Pseudocidaris spine; Matmor Formation (Middle Jurassic) of Makhtesh Gadol, Israel.

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]

Asterocidaris Cotteau, 1859
Gymnocidaris L. Agassiz, 1838
Hemicidaris L. Agassiz, 1838
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

  1. 1 2 "Fossilworks: Gateway to the Paleobiology Database". fossilworks.org. Retrieved 2015-05-10.
  2. "WoRMS - World Register of Marine Species - Hemicidaridae Wright, 1857 ". marinespecies.org. Retrieved 2015-05-10.
  3. "BioLib - Hemicidaridae". biolib.cz. Retrieved 2015-05-10.


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