Order Summary for Valvatida

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Main Ref.	:	MarineSpecies.org, 2050
Order	:	Valvatida
Class	:	Asteroidea
Sister Order	:	M years
Ref.	:	\|
First Fossil Record	:
Occurs in	:		Marine	Fresh	Brackish
Remark	:	AphiaID=123090
Class etymology	:
Order etymology	:
Families	:	( n = ) - Acanthasteridae Archasteridae Asterinidae Asterodiscididae Asteropseidae Chaetasteridae Ganeriidae Goniasteridae Leilasteridae Mithrodiidae Odontasteridae Ophidiasteridae Oreasteridae Podosphaerasteridae Poraniidae Solasteridae Sphaerasteridae