Species: watsoni PANCHEN, 1975
Etymology: In honor of Prof. D. M. S. Watson.
Holotype: RSM 1950.56.1
Locality: Unknown-possibly Venturefair pit, Gilmerton, near Edinburgh, mid-Lothian Province, Scotland, northern United Kingdom.
Horizon: No associated data-probably Gilmeton Ironstone (=Rough Parrot Coal), Lower Limestone Group.
Biostratigraphy:
Age: Lothian basin (p2 Goniotites zone), upper Visean, uppermost Dinantion, Visean Epoch, Early Carboniferous (Early Late Mississippian).
Material: A crushed skull in ironstone including both jaw rami with fragments of the pectoral girdle.
Referred material:
MILNER, SMITHSON, MILNER, COATES & ROLFE 1986/SMITHSON, 1987
Locality: Dora opencast site, near Cowdenbeath, Fife Province, Scotland, northern United Kingdom.
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:
RSM GY 1975.48.48: Posterior half of left mandible.
NUZ 78.1.61: Posterior half of left mandible.
NUZ 77.6.18a,78.3.32, BMNH R9241: Pleuocentra.
NUZ 78.3.10: Pleuocentrum and intercentrum.
NUZ 77.6.18b: Intercentrum.
NUZ 78.2.24: Axis neural arch.
NUZ 77.6.28, 78.1.54, 78.3.9: Trunk neural archs
RSM GY 1975.48.45: 3 trunk neural arches and pleurocentrum.
RSM GY 1976.19.29: Trunk neural arch.
NUZ 78.2.6: Caudal neural arch.
NUZ 78.2.39: Caudal neural arch.
NUZ 77.6.25: rib shaft.
NUZ 77.8.7: Trunk rib.
NUZ 78.1.63: Rib shaft.
NUZ 78.1.64: Rib fragment.
NUZ 78.2.2: Rib head.
NUZ 78.2.25: Trunk rib.
NUZ 78.3.5: Rib head.
BMNH R9232: Trunk rib.
RSM GY 1975.5.6: Trunk rib.
RSM GY 1975.48.53: Rib shaft.
RSM GY 1976.19.32: Rib shaft.
NUZ 78.1.58: Right humerus.
NUZ 78.3.29: Right pelvis.
NUZ 78.1.46a: Left femur.
NUZ 78.146b: Left tibia.
NUZ 78.3.2: Left fibula.
NUZ 78.3.4: Distal end of right fibula.
NUZ 77.6.15, 77.8.11, 78.2.5, 78.3.22: Phalanges.
SMITHSON, 1985
Locality: Burghlee colliery, Loanhead, near Edinburgh, mid-Lothian Province, Scotland, northern United Kingdom.
Horizon: Burghlee Ironstone/Rumbles Ironstone, Limestone Coal Group.
Biostratigraphy:
Age: Namurian, Silesian, Lower Lower Namurian, Lower Silesian Series, Pendleian Stage, Serpukhovian Epoch, Early Carboniferous (Early Late Mississippian).
Material:
RSM GY 1963.15.116: Left scapulacoracoid, left clavicle and series of vertebrae and ribs.
?RSM GY 1885.57.50: Left maxilla.
Note: Right fibula is pathologic (HERBST, DOUBE, SMITHSON, CLACK & HUTCHINSON, 2019).