Clypeaster australasiae

Clypeaster australasiae
	Preserved specimen
Scientific classification
Kingdom:	Animalia
Phylum:	Echinodermata
Class:	Echinoidea
Order:	Clypeasteroida
Family:	Clypeasteridae
Genus:	Clypeaster
Species:	C. australasiae
Binomial name
	Clypeaster australasiae; (Gray, 1851)

Clypeaster australasiae, the Australasian sand dollar, is a species of sea urchins of the Family Clypeasteridae. Their armour is covered with spines. Clypeaster australasiae was first scientifically described in 1851 by Gray.[1][2]

Clypeaster australaiae is a dark red-brown to cream coloured animal with a slightly convex upper surface and distinct markings in a flower-petal pattern. The surface of the test is covered by a dense mat of small spines and tubercles.[2]

Habitat

Silt, sand and reef to 130m depth. The animals can be abundant in some areas, but are not often seen as they usually bury themselves in the sediment and prefer deeper water.[2]

Distribution

Port Phillip Heads, Victoria, to Bowen, Queensland, and western Tasmania. Also Lord Howe Island and Norfolk Island.[2]

Size

Length up to 150mm.[2]

References

Kroh, A. (2010). Clypeaster australasiae (Gray, 1851). In: Kroh, A. & Mooi, R. (2010) World Echinoidea Database. at the World Register of Marine Species.
Edgar, Graham J. (2008). Australian Marine Life: The plants and animals of temperate waters (Second ed.). Sydney: New Holland. ISBN 9781921517174.

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[1] Kroh, A. (2010). Clypeaster australasiae (Gray, 1851). In: Kroh, A. & Mooi, R. (2010) World Echinoidea Database. at the World Register of Marine Species.

[Edgar_2008-2] Edgar, Graham J. (2008). Australian Marine Life: The plants and animals of temperate waters (Second ed.). Sydney: New Holland. ISBN 9781921517174.