''Leptometra'' is a

genus Genus ( plural genera ) is a taxonomic rank used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In the hierarchy of biological classification, genus com ...

of free-swimming, stemless crinoids.

Characteristics

Members 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 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 ...

or unbranched appendages on a low, cone-shaped dorsal ossicle, a bone-like structure in the centre of the disc.

Species

The following species are recognised in the World Register of Marine Species: *'' Leptometra celtica'' (McAndrew & Barrett, 1857) *''

Leptometra phalangium ''Leptometra'' is a genus of free-swimming, stemless crinoids. Characteristics Members 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 Giovanni Battis ...

'' (Müller, 1841)

References

Antedonidae {{crinoidea-stub