Species: simnorhynchus WATSON, 1929
Etymology:

Holotype: RSM 1889.101.17

Locality: Pentland Oil Works, Edinburgh, Mid-Lothian Province, Scotland, northern United Kingdom.

Horizon: Dunnet Shale, Upper Oil Shale Group.

Biostratigraphy:

Age: Visean, upper Dinantian series, Asbian Stage, Visean Epoch, Early Carboniferous (Middle Mississippian).

Material: Skull and fragmentary skeleton.

Referred material:

SMITHSON, 1985

RSM GY 1895.63.7

Locality: Straiton, Edinburgh, Mid-Lothian Province, Scotland, northern United Kingdom.

Horizon: Dunnet Shale, Upper Oil Shale Group.

Biostratigraphy:

Age: Visean, upper Dinantian series, Asbian Stage, Visean Epoch, Early Carboniferous (Middle Mississippian).

Material: An undescribed postcranial skeleton.