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This article does not cite any references or sources. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed. (December 2007) Janassa Fossil range: Lower Carboniferous to Permian Janassa bituminosa & Menaspis armatus Conservation status Fossil Scientific classification Kingdom: Animalia Phylum: Chordata Class: Chondrichthyes Order: Petalodontiformes Family: Janassidae Jaekel, 1899 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 genus of cartilaginous fish that lived in marine environments in what is now central United States of America and Europe during the Carboniferous and Permian. It is known from teeth, and a lot good preserved whole 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. However, Janassa was a Petalodont, a kind of ancient cartilaginous fish related to chimaeras. Its teeth suggest it crushed and ate shellfish, such as brachiopods. This article about a prehistoric fish is a stub. You can help Wikipedia by expanding it. v • d • e Paleontology portal