Ichthyodectes ctenodon

Geological Range

Cenomanian to Maastrichtian

Alabama to New Mexico to Montana

Campanian: Bearpaw Shale (Upper) (MT) [Campanian]; Pierre Shale (SD) [Campanian]; Pierre Shale (WY) [Campanian]; Niobrara Formation (KS)
Santonian: Niobrara Formation (Smoky Hill) (KS)
Coniacian: Ector Chalk (TX); Niobrara Formation (Smoky Hill Member) (KS)
Turonian: Carlile Shale (KS); Carlile Shale (Fairport Member) (KS); Carlile Shale (UT); Eagle Ford Shale (TX); Graneros Formation (KS); Greenhorn Limestone (KS); Greenhorn Formation (Hartland Member) (KS)
Cenomanian: Greenhorn Limestone (CO); Greenhorn Limestone (Lincoln Mbr) (CO); Greenhorn Limestone (KS); Greenhorn Limestone (Lincoln Shale Member) (KS)
Unknown Stage: Austin Chalk (TX); Benton Shale (CO); Benton Shale (NE); Bladen Formation (NC); Carlile Shale (Blue Hill Mbr) (KS); Carlile Shale (Fairport Mbr) (KS); Colorado Shale (MT); Colorado Shale (NM); Kootenai Formation (MT); Mancos Shale (CO); Mooreville Formation (AL); Mooreville Formation (MS); Montana Formation (MT); Montana Formation (WY); Mowry Shale (WY); Niobrara Formation (CO); Niobrara Formation (Smoky Hill Mbr) (KS); Niobrara Formation (NM); Niobrara Formation (SD); Pierre Shale (SD); Pierre Shale (WY)