Biology:Echinarachniidae

Echinarachniidae; Temporal range: Middle Eocene–Present PreЄ Є O S D C P T J K Pg N
	An image of Echinarachnius parma, one of the species in this clade.
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Echinodermata
Class:	Echinoidea
Order:	Clypeasteroida
Family:	Echinarachniidae

Short description: Family of sand dollars

Echinarachniidae is a family of echinoderms belonging to the order Clypeasteroida.^[1] This clade appeared in the Middle Miocene epoch and is still living today in the North Pacific Ocean (California and Japan ) ocean to Northeast Canada and Southern United States .^[2]

Genera

Genera:^[1]

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Original source: https://en.wikipedia.org/wiki/Echinarachniidae. Read more