Notocrinidae
Family of crinoids
From Wikipedia, the free encyclopedia
Notocrinidae is a family of crinoids. It includes one extant genus, Notocrinus,[1] which contains two species, both endemic to the seas around Antarctica.[2] and Zelandimetra, a fossil taxon from the Late Oligocene found in New Zealand.[3]
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| Notocrinidae | |
|---|---|
| |
| Notocrinus virilis | |
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Echinodermata |
| Class: | Crinoidea |
| Order: | Comatulida |
| Superfamily: | Notocrinoidea |
| Family: | Notocrinidae Mortensen, 1918[1] |
| Genus | |
|
See text | |
Description
Members of this family have five arms which subdivide near the base giving them ten arms in total. The arms can reach 100 mm (4 in) in length, and there are thirty to sixty or more cirri. The gonads are located on the arms, and the embryos are brooded in cavities in the arms. The aboral surface (underside) of the disc has five deep radial pits arranged in a star-shape.[2]
Genera
- Notocrinus Mortensen, 1917
- Zelandimetra Eagle, 2008
