Species: inexpectatus SIMPSON, 1928
Etymology:

Holotype: BMNH 48248

Locality: Durdlestone Bay, Swanage, Dorset County, England, Southern United Kingdom.

Horizon: Purbeckian.

Biostratigraphy:

Age: Tithonian Stage, Upper Malm Epoch, Late Jurassic.

Material: Part of left mandibular ramus with LM1-4 and the germ of LM5.

Referred material:

SIGOGNEAU-RUSSELL, 2003b

BMNH M. 51817, DORCM GS 619, ?800, ?916: Left molars.

DORCM CS 620: Right molar.

DORCM GS 968: Left posterior half of molar.

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Species: major SIGOGNEAU-RUSSELL, 2003b
Etymology: Latin, major, "larger."

Holotype: BMNH J.693

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: Left lower molariform.

Referred material:

BMNH J.679: Right lower molariform.