Species: bolti MANN, CALTHORPE & MADDIN, 2021
Etymology: In honor of teh late palaeontologhist John R. Bolt.
Holotype: FMNH 1309 (part and counterpart)
Locality: Mazon Creek, Grundy County, Illinois.
Horizon: Francis Creek Shale, above the Morris (no. 2) Coal, Carbondale Formation.
Biostratigraphy:
Age: Westphalian D, Lower Upper Silesian, Desmoniensean, Myachkovskian Stage, upper Moscovian Epoch, Late Pennsylvanian (Late Carboniferous).
Material: Skull and skeleton with soft body impressions (gastric bolus) and scales.