| Notocrinidae | |
|---|---|
| |
| Notocrinus virilis | |
Scientific classification 
| |
| Kingdom: | Animalia |
| Phylum: | Echinodermata |
| Class: | Crinoidea |
| Order: | Comatulida |
| Superfamily: | Notocrinoidea |
| Family: | Notocrinidae Mortensen, 19181 |
| Genus | |
|
See text | |
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
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
References
References
- Messing, Charles (2019). "Notocrinidae Mortensen, 1918". WoRMS. World Register of Marine Species. Retrieved 21 March 2019.
- O'Hara, Timothy; Byrne, Maria (2017). Australian Echinoderms: Biology, Ecology and Evolution. Csiro Publishing. pp. 213–214. ISBN 978-1-4863-0763-0.
- Eagle, Michael K. (2008). "New Comatulid Crinoids from the Meyers Pass Limestone Member (Waitakian (Chattian)) of the Pentland Hills and Hurstlea, South Canterbury, New Zealand". Papahou: Records of the Auckland Museum. 45: 101–129. ISSN 1174-9202. JSTOR 42905901. Wikidata Q58623364.