Английская Википедия:Delocrinus

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Шаблон:Short description Шаблон:Automatic taxobox

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

Eperisocrinus missouriensis, formerly delocrinus missouriensis, was made the state fossil of Missouri in 1989.[2]

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.[3]

References

Шаблон:Reflist

Шаблон:Taxonbar