Species: crassus FRITSCH, 1875
Etymology:
= Keraterpeton crassum (FRITSCH 1875) FRISTCH, 1881
= Ceraterpetum crassum (FRITSCH, 1875) LYDEKKER, 1890

Lectotype: NMP M 460

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

Horizon: Gaskohl.

Biostratigraphy:

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

Material: Fragmentary skull and fragmentary skeleton.

Referred material:

2 more complete skeletons.

MP 406: Fragmentary skull.

MP 3939 (III D. 29, C. 705, MP III D. 35 c, 711): Fragmentary skulls.

And other fragmentary remains.

LYDEKKER, 1890

Electrotypes:

BMNH R351: Fragmentary skeleton.

BMNH R352: Fragmentary skeleton.

BMNH R353: Fragmentary skeleton.

BMNH R354: Fragmentary skeleton.

PATON, 1975

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

Horizon: Gaskohl.

Biostratigraphy:

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

Material:

RSM: 1 lower jaw.

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Species: spinosus CIVET, 1982
Etymology:

Holotype: MHMM (no number known)

Loclaity: Montceau-les-Mines, Blanzy Montceau Basin, Saone et Loire Department, France.

Horizon:

Biostratigraphy:

Age: Upper Stephanian (B-C), Upper Silesian, upper Kasimovian to Gzelian Epoch, Latest Carboniferous (Latest Pennsylvanian).

Material: Imperfect skull and skeleton.