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Pterasteridae

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Pterasteridae is a family of sea stars in the order Velatida, consisting of eight genera.

Description and characteristics

Pterasterids are primarily deep-water, and have an inflated aboral surface. Like many other members of the ordo Velatida, they have a hole in the middle of the central disc called "osculum", from which they can expel mucus for defending against predators.[2]

Many species brood their young in an internal chamber flushed with seawater.

Fossil pterasterids have been found as early as the upper Campanian of the Cretaceous period.[3]

Genera

According to the World Register of Marine Species :

See also

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Pterasteridae: Brief Summary

provided by wikipedia EN

Pterasteridae is a family of sea stars in the order Velatida, consisting of eight genera.

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cc-by-sa-3.0
copyright
Wikipedia authors and editors
original
visit source
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wikipedia EN