''Davidaster'' is a genus of
crinoid
Crinoids are marine invertebrates that make up the class Crinoidea. Crinoids that remain attached to the sea floor by a stalk in their adult form are commonly called sea lilies, while the unstalked forms, called feather stars or comatulids, are ...
s. According to the World Register of Marine Species, a number of species that originally were included in the genus ''
Nemaster'' are now included in ''Davidaster''.
[ Members of this genus have wedge-shaped arms, except for the basal ones, often longer than they are wide. The mouth is off centre and there are no pinnule combs after pinnule 3. The primary comb has the teeth widely separated and confluent with the lateral edge of the segment.][
]
Species
*Species '' Davidaster discoideus'' (Carpenter, 1888)
:synonyms ''Nemaster discoidea'' (Carpenter, 1888)
::::''Nemaster insolitus'' AH Clark, 1917
*Species '' Davidaster rubiginosus'' (Pourtalès, 1869)
:synonyms ''Nemaster iowensis'' Springer, 1902
::::''Nemaster lineata'' (Carpenter, 1880)
::::''Nemaster mexicanensis'' Tommasi, 1966
::::''Nemaster rubiginosa'' (Pourtalès, 1869)
References
Comatulidae
Crinoid genera
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