Heterotardigrada

Heterotardigrada
	Echiniscus succineus under PCM (left) and SEM (right)
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Tardigrada
Class:	Heterotardigrada; Marcus, 1927
Families
	Order Arthrotardigrada; Archechiniscidae; Batillipedidae; Coronarctidae; Halechiniscidae; Neoarctidae; Neostygarctidae; Renaudarctidae; Stygarctidae; Styraconyxidae; Tanarctidae; Order Echiniscoidea; Carphaniidae; Echiniscidae; Echiniscoididae; Oreellidae

The class Heterotardigrada includes tardigrades (water bears) that have cephalic appendages and legs with four separate but similar digits or claws on each. 444 species have been described.

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