Chondrichthyes - Petalodontiformes - Janassidae
Full reference: R. Lund. 1989. New petalodonts (Chondrichthyes) from the Upper Mississippian Bear Gulch Limestone (Namurian E₂b) of Montana. Journal of Vertebrate Paleontology 9(3):350-368
Belongs to Janassa according to R. Lund 1989
Sister taxa: Janassa angularis, Janassa bituminosa, Janassa brevis, Janassa clavatus, Janassa gurleiana, Janassa imbricatus, Janassa kochi, Janassa korni, Janassa linguaeformis, Janassa maxima, Janassa ordiana, Janassa strigilina, Janassa unguicula
Type specimen: MV 7697, a tooth (tooth in part and counterpart). Its type locality is MV 7106, Supercrop Quarry, Bear Gulch, which is in an Arnsbergian lagoonal/restricted shallow subtidal limestone in the Heath Formation of Montana.
Ecology: nektonic carnivore
Distribution: found only at MV 7106, Supercrop Quarry, Bear Gulch
Specimen images are retrieved through the ePANDDA API.
Click image to enlarge. Click to access iDigBio record.