Genus: Crassigyrinus WATSON, 1929
Etymology:

Species: scoticus WATSON, 1929
Etymology:

Holotype: RSM 1859.33.104

Locality: Gilmerton, near Edinburgh, mid-Lothian Province, Scotland, northern United Kingdom.

Horizon: Gilmerton Ironstone, Lower Limestone Group.

Biostratigraphy:

Age: Brigantian, upper Visean, uppermost Dinantion, Visean Epoch, Early Carboniferous (Early Late Mississippian).

Referred material:

PANCHEN & SMITHSON, 1990

Locality: Dora opencast site near Cowdenbeath, Fife Region, Scotland.

Horizon: Dora Bone Bed, (Above Little Splint Coal), Limestone Coal Group.

Biostratigraphy:

Age: Namurian A, Lower Lower Namurian, Lower Silesian Series, Pendleian Stage, Serpukhovian Epoch, Early Carboniferous (Early Late Mississippian).

Material:

RMS GY 1984.15.3: Left ischium, incomplete right ilium, right tibia, right fibula, metatarsals, phalanges, neural arch, centrum presacral rib, scutes and unidentified fragments of bone.