''Metacrinus'' is a

genus Genus ( plural genera ) is a taxonomic rank used in the biological classification of living and fossil organisms as well as viruses. In the hierarchy of biological classification, genus comes above species and below family. In binomial nom ...

of stalked

crinoid Crinoids are marine animals that make up the class Crinoidea. Crinoids that are attached to the sea bottom by a stalk in their adult form are commonly called sea lilies, while the unstalked forms are called feather stars or comatulids, which are ...

s in the

family Family (from la, familia) is a group of people related either by consanguinity (by recognized birth) or affinity (by marriage or other relationship). The purpose of the family is to maintain the well-being of its members and of society. Idea ...

Isselicrinidae Isselicrinidae is one of four extant families of crinoids in the order Isocrinida. Subfamilies and genera * subfamily Diplocrininae Roux, 1981 ** genus '' Cenocrinus'' Thomson, 1864 -- 1 species ** genus '' Endoxocrinus'' AH Clark, 1908 -- 5 s ...

. Members of this genus live on hard surfaces in deeper parts of the ocean. The genus has extant species and is also represented in the

fossil A fossil (from Classical Latin , ) is any preserved remains, impression, or trace of any once-living thing from a past geological age. Examples include bones, shells, exoskeletons, stone imprints of animals or microbes, objects preserved ...

record. Members of the genus grow to a maximum height of and are found in the eastern

Pacific Ocean The Pacific Ocean is the largest and deepest of Earth's five oceanic divisions. It extends from the Arctic Ocean in the north to the Southern Ocean (or, depending on definition, to Antarctica) in the south, and is bounded by the contin ...

from Japan to Australia.

Species

The World Register of Marine Species lists the following species in the genus: *'' Metacrinus costatus'' Carpenter, 1884 *'' Metacrinus interruptus'' Carpenter, 1884 *'' Metacrinus levii'' Améziane-Cominardi, 1990 *'' Metacrinus musorstomae'' Roux, 1981 *'' Metacrinus nodosus'' Carpenter, 1884 *'' Metacrinus rotundus'' Carpenter, 1885 *'' Metacrinus serratus'' Döderlein, 1907 *'' Metacrinus wyvillii'' Carpenter, 1884 *'' Metacrinus zonatus'' AH Clark, 1908

References

Isselicrinidae Crinoid genera {{crinoidea-stub