''Dendraster'' 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 ...

sand dollar Sand dollars (also known as a sea cookie or snapper biscuit in New Zealand, or pansy shell in South Africa) are species of flat, burrowing sea urchins belonging to the order Clypeasteroida. Some species within the order, not quite as flat, are ...

s of the family Dendrasteridae within the order

Clypeasteroida Sand dollars (also known as a sea cookie or snapper biscuit in New Zealand, or pansy shell in South Africa) are species of flat, burrowing sea urchins belonging to the order Clypeasteroida. Some species within the order, not quite as flat, are k ...

. The

extant Extant is the opposite of the word extinct. It may refer to: * Extant hereditary titles * Extant literature, surviving literature, such as ''Beowulf'', the oldest extant manuscript written in English * Extant taxon, a taxon which is not extinct, ...

species in this genus are found in the northeast Pacific Ocean from

Alaska Alaska ( ; russian: Аляска, Alyaska; ale, Alax̂sxax̂; ; ems, Alas'kaaq; Yup'ik: ''Alaskaq''; tli, Anáaski) is a state located in the Western United States on the northwest extremity of North America. A semi-exclave of the U.S., ...

Baja California Baja California (; 'Lower California'), officially the Free and Sovereign State of Baja California ( es, Estado Libre y Soberano de Baja California), is a state in Mexico. It is the northernmost and westernmost of the 32 federal entities of Mex ...

.Mooi, R. (1997).
Sand Dollars of the genus Dendraster (Echinoidea: Clypeasteroida): Phylogenetic systematics, heterochrony, and distribution of extant species.
' Bulletin of Marine Species 61(2): 343–375. The best-known, most common and widespread species is '' D. excentricus''.

Species

Listed alphabetically.Universal Biological Indexer
/ref> *'' Dendraster ashleyi'' (Arnold) † *'' Dendraster casseli'' Grant & Hertlein, 1938 † *'' Dendraster elsmerensis'' Durham, 1949 † *''

Dendraster excentricus ''Dendraster excentricus'', also known as the eccentric sand dollar, sea-cake, biscuit-urchin, western sand dollar, or Pacific sand dollar, is a species of sand dollar in the family Dendrasteridae. It is a flattened, burrowing sea urchin found ...

'' (Eschscholtz, 1831) *'' Dendraster gibbsii'' (Remond) † *'' Dendraster laevis'' H. L. Clark, 1948 *'' Dendraster pacificus'' Kew, 1920 † *'' Dendraster perrini'' (Weaver 1908) † *'' Dendraster rugosus'' H. L. Clark *'' Dendraster terminalis'' (Grant & Hertlein 1938) *'' Dendraster vizcainoensis'' Grant and Hertlein, 1938

References

Dendrasteridae Echinoidea genera {{echinoidea-stub