Leptometra is a genus of free-swimming, stemless crinoids.
Leptometra | |
---|---|
Leptometra celtica | |
Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Echinodermata |
Class: | Crinoidea |
Order: | Comatulida |
Family: | Antedonidae |
Genus: | Leptometra A. H. Clark, 1908 [1] |
Species | |
See text |
Characteristics
editMembers of this genus have no stems but have five pairs of feathery arms arising from a central concave disc. There are a number of long cirri or unbranched appendages on a low, cone-shaped dorsal ossicle, a bone-like structure in the centre of the disc.
Species
editThe following species are recognised in the World Register of Marine Species:[1]
- Leptometra celtica (McAndrew & Barrett, 1857)
- Leptometra phalangium (Müller, 1841)
References
edit- ^ a b Leptometra - AH Clark, 1908 World Register of Marine Species. Retrieved 2013-12-03.