Genus: Hemichthys FRITISCH, 1895
Etymology:

Species: problematica FRITISCH, 1895
Etymology:

Holotype: NMP M.885

Locality: Plattenkohl of Humbolt Mine, Nyrany (Nurschan), Plzen Basin, Bohemia, Czech Republic.

Horizon: Gaskohl.

Biostratigraphy:

Age: Upper Westphalian D, Lower Upper Silesian, Desmoniensean, Upper Myachkovskian Stage, upper Moscovian Epoch, Late Carboniferous (Late Pennsylvanian).

Material: Articulated skull.