Species: pseudobtusus EVANS & SEARLE, 2002
Etymology:
= Saurillus robustidens HOFFSTETTER, 1967

Holotype: BMNH R 8130

Locality: ‘Beckles Pit’, Durlston Bay, Swanage, Isle of Purbeck, Dorset County, England, Southern United Kingdom.

Horizon: Mammal Bed (D83), Purbeck Limestone Group.

Biostratigraphy:

Age: Berriasian Stage, Lowermost Neocomian Substage, Lowermost Early Cretaceous Epoch, Early Cretaceous.

Material: Maxilla, dentary and teeth.

Referred material:

BMNH R8097: Denatry and paird frontals.

BMNH R8098: Mandible.

BMNH R8100: Association of mandibles, maxilla, frontals and humerus.

BNH R8106: Association of dentary and vertebra.

A collection of over 40 further dentaires (including BMNH R8240) and 8 maxillae.