Chondrichthyes - Petalodontiformes - Janassidae
Synonyms: Byzenos Münster 1843, Climaxodus McCoy 1848, Dictea Münster 1840
Parent taxon: Janassidae according to M. Ginter et al. 2010
See also Goto and Okura 2004, Hancock and Howse 1870, Hay 1902, Jordan 1963, Lund 1989, Sepkoski 2002, Woodward 1889 and Zangerl 1981
Sister taxa: Cholodus, Ctenopetalus, Cymatodus, Dactylodus, Fissodus, Gamphacanthus, Gomphacanthus, Petalodopsis, Phoderacanthus, Platacanthus, Pnigeacanthus, Pristicladodus, Stichacanthus, Thoracodus
Subtaxa: Janassa angularis Janassa bituminosa Janassa brevis Janassa clarki Janassa clavatus Janassa gurleiana Janassa imbricatus Janassa kochi Janassa korni Janassa linguaeformis Janassa maxima Janassa ordiana Janassa strigilina Janassa unguicula
Type: Trilobites bituminosus
Ecology: nektonic carnivore
Distribution:
• Permian of Germany (13 collections), Greenland (1), the Russian Federation (1), the United Kingdom (3), United States (7: Kansas, Texas, Wyoming)
• Carboniferous of Japan (1), the United Kingdom (9), United States (4: Montana, Nebraska, South Dakota)
Total: 39 collections including 44 occurrences
Specimen images are retrieved through the ePANDDA API.
Click image to enlarge. Click to access iDigBio record.