Notocrinidae is a
monotypic family of
crinoids, the only genus being ''Notocrinus'',
[ which contains two species, both endemic to the seas around Antarctica.]
Description
Members of this family have five arms which subdivide near the base giving them ten arms in total. The arms can reach in length, and there are thirty to sixty or more cirri
Giovanni Battista Cirri (1 October 1724 – 11 June 1808) was an Italian cellist and composer in the 18th century.
Biography
Cirri was born in Forlì in the Emilia-Romagna Region of Italy. He had his first musical training with his brother ...
. The gonad
A gonad, sex gland, or reproductive gland is a mixed gland that produces the gametes and sex hormones of an organism. Female reproductive cells are egg cells, and male reproductive cells are sperm. The male gonad, the testicle, produces sper ...
s 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.[
]
Species
The World Register of Marine Species lists the following species in this genus:
References
Comatulida
Crinoid genera
{{crinoidea-stub