Harman Patil

Hemicidaridae

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Kingdom  Animalia
Class  Echinoidea
Infraclass  Carinacea
Phylum  Echinodermata
Subclass  Euechinoidea
Rank  Family
Hemicidaridae
Similar  Hemicidaris, Saleniidae, Phymosomatidae, Pseudocidaris, Arbacioida

Hemicidaridae is a family of fossils sea urchins in the classis Echinoidea.

Contents

These epifaunal grazer-deposit feeders lived in Jurassic and Cretaceous ages (from 189.6 to 112.6 Ma).

Taxonomy

List of genera and subfamilies:

  • Subfamily Hemicidarinae Wright, 1857
  • Asterocidaris Cotteau, 1859Gymnocidaris L. Agassiz, 1838Hemicidaris L. Agassiz, 1838
  • Subfamily Pseudocidarinae Smith & Wright, 1993
  • Cidaropsis Cotteau, 1863Pseudocidaris Pomel, 1883Gymnocidaris L. Agassiz, 1838Hemicidaris (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.

    References

    Hemicidaridae Wikipedia


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