Species: polydens (FRITSCH, 1883) ZAJIC, 1984
Etymology:
= Dawsonia polydens FRITSCH, 1883

Lectotype: NMP 419 (Electrotypes: BMNH R340?)

Locality: Nyrany (Nurschan), Plzen Basin, Bohemia, Czech Republic.

Horizon: Kounov Member, Slany Formation.

Biostratigraphy:

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

Material: Fragmentary skull.