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Delocrinus

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Delocrinus
Temporal range: Carboniferous–Permian
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Echinodermata
Class: Crinoidea
Order: Dendrocrinida
Family: Catacrinidae
Genus: Delocrinus
Miller and Gurley 1890
Species

Delocrinus is a genus of extinct crinoids, belonging to the family Catacrinidae.[1] Specimens have been found in Kansas Nebraska Nevada Oklahoma, Arizona, Iowa, Texas, Utah and Virginia.

Delocrinus missouriensis was made the state fossil of Missouri in 1989.[citation needed]

Description

Like extant crinoids, Delocrinus species was anchored to a hard surface by a holdfast out of which grew an articulated stalk. On top of this was a calyx with a number of feather-like arms. Each arm bore short branches known as pinnules and from these cirri were extended which sifted plankton from the water flowing past.[2]

References

  1. ^ "Delocrinus". Palaeobiology Database.
  2. ^ Dorit, R. L.; Walker, W. F.; Barnes, R. D. (1991). Zoology. Saunders College Publishing. pp. 790–792. ISBN 978-0-03-030504-7.