†Papilionichthys stahlae Grogan and Lund 2009 (cartilaginous fish)
Chondrichthyes - Iniopterygia - Iniopterygidae
Full reference: E. D. Grogan and R. Lund. 2009. Two new iniopterygians (Chondrichthyes) from the Mississippian (Serpukhovian) Bear Gulch Limestone of Montana with evidence of a new form of chondrichthyan neurocranium. Acta Zoologica 90(Suppl. 1):134-151
Belongs to Papilionichthys according to E. D. Grogan and R. Lund 2009
Sister taxa: none
Type specimen: MV 6170, a skeleton. Its type locality is MV 5410, Bear Gulch, which is in an Arnsbergian lagoonal/restricted shallow subtidal limestone in the Heath Formation of Montana.
Ecology: nektonic carnivore