Janassa

Janassa; Temporal range: Lower Carboniferous to Lopingian
	Janassa bituminosa & Menaspis armatus
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Chondrichthyes
Subclass:	Holocephali
Order:	†Petalodontiformes
Family:	†Janassidae
Genus:	†Janassa
Species
	J. bituminosa (Schlotheim, 1820) (type species); J. clavata M'Coy, 1855; J. kochi Nielsen, 1932; J. clarki Lund, 1989; J. unguicula (Eastman, 1903);

Janassa is an extinct

United States of America and Europe during the Carboniferous and upper Permian.^[1]

It is known from teeth and a few poorly preserved body fossils from Germany (Kupferschiefer, Upper Permian) and England (Marl Slate, Upper Permian).

According to the fossils, Janassa had a body plan very similar to that of the modern skate. Its teeth suggest it crushed and ate shellfish, such as brachiopods.

References

^ Schaumberg, Günther (1977). "Die Richelsdorfer Kupferschiefer und seiner Fossilien, III". Aufschluss. 28: 297–352.

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[1] Schaumberg, Günther (1977). "Die Richelsdorfer Kupferschiefer und seiner Fossilien, III". Aufschluss. 28: 297–352.

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