Species: rex FREEMAN, 1979
Etymology: Latin, rex, "king."
Holotype: NHMUK PV M36525 (old FM/K 25)
Locality: Old Cement Works Quarry, (Washford Quarry), Kirtlington, Ordnance Survey Grid Reference SP 495200, Oxfordshire County, England, Southern United Kingdom.
Horizon: Kirtlington Mammal bed, near base of the Forest Marble.
Biostratigraphy: Oppelia aspidioides Zone.
Age: Upper Bathonian Stage, upper middle Dogger Epoch, Middle Jurassic.
Material: Right or left, lower or upper molar.
Referred material:
NHMUK PV M46240, M46248, M46775:
PANCIROLI, BENSON, & WALKSH, 2017, PANCIROLI, BENSON, WALSH, BUTLER, CASTRO, JONES & EVANS, 2020
Locality: Skye, Isle of Skye, Inverness-shire County, Highland Province, Scotland, northern United Kingdom.
Horizon: Kilmalung Formation, Great Estuarine Group.
Biostratigraphy:
Age: Bathonian Stage, Dogger Epoch, Middle Jurassic.
Material:
NMS G.2016.34.1: A partial dentary with 2 erupted molars and 2 unerupted premolars.