Edaphaspis

Edaphaspis bystrowi; Temporal range: Early Devonian
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Pteraspidomorphi
Subclass:	Heterostraci
Order:	Cyathaspidiformes
(unranked):	Amphiaspidida
Superfamily:	Amphiaspidoidei
Family:	Edaphaspididae; Novitskaya, 1968
Genus:	Edaphaspis
Species:	E. bystrowi
Binomial name
	Edaphaspis bystrowi; Novitskaya, 1968

Edaphaspis bystrowi is an extinct

hypersaline lagoon-bottoms. It is the only representative of the family

Edaphaspididae.

Anatomy

E. bystrowi is known from a mostly complete cephalothoracic armor that is 16 centimeters long, and 21 centimeters wide. The armor is laterally flanked on both sides by serrated fringes. The anterior portion of the armor is missing, so experts are unsure if E. bystrowi had eyes (and preorbital openings) or not. There is a pair of branchial openings placed dorsally on a large dorsal lump at the posterior end of the armor.^[1]

References

^ ^a ^b Novitskaya, Larisse. Les amphiaspides (Heterostraci) du Devonien de la Siberie. Éditions du Centre national de la recherche scientifique, 1971.

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[Novitskaya-1] Novitskaya, Larisse. Les amphiaspides (Heterostraci) du Devonien de la Siberie. Éditions du Centre national de la recherche scientifique, 1971.

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