''Dendraster'' is a

genus Genus (; : genera ) is a taxonomic rank above species and below family (taxonomy), family as used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In bino ...

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

s of the family Dendrasteridae within the order

Clypeasteroida Sand dollars (also known as sea cookies or snapper biscuits in New Zealand and Brazil, or pansy shells in South Africa) are species of flat, burrowing sea urchins belonging to the Order (biology), order Clypeasteroida. Some species within the or ...

. The

extant Extant or Least-concern species, least concern 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 * Exta ...

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

Alaska Alaska ( ) is a non-contiguous U.S. state on the northwest extremity of North America. Part of the Western United States region, it is one of the two non-contiguous U.S. states, alongside Hawaii. Alaska is also considered to be the north ...

Baja California Baja California, officially the Free and Sovereign State of Baja California, is a state in Mexico. It is the northwesternmost of the 32 federal entities of Mexico. Before becoming a state in 1952, the area was known as the North Territory of B ...

.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