Species: punctatum OWEN, 1842
Etymology:

Holotype: Now lost (Lydekker, 1889, Joyce, 2017)

Locality: Durlston Bay, Dorset County, England, Southern United Kingdom.

Horizon: Portland stone-Upper Purbeck Beds.

Biostratigraphy:

Age: Portlandian Stage, Upper Tithonian Stage, Uppermost Malm Epoch, Latest Late Jurassic-Berriasian Stage, Lowermost Neocomian Subepoch, Lowermost Early Cretaceous Epoch, Early Cretaceous.

Material: A partial shell.

LYDEKKER, 1889

Locality: Durlston Bay, Dorset County, England, Southern United Kingdom.

Horizon: Middle Purbeck Beds.

Biostratigraphy:

Age: Portlandian Stage, Upper Tithonian Stage, Uppermost Malm Epoch, Latest Late Jurassic-Berriasian Stage, Lowermost Neocomian Subepoch, Lowermost Early Cretaceous Epoch, Early Cretaceous.

Material:

BMNH 48349: Slabs of limestone, containing numerous fragmetns of the carapace and plastron.

BMNH 48352: Slab of limestone, showing the internal surface of part of teh 2 costal bones, and the glenodial extremity of the scapulo-precoracoid.

Paralectotype: BMNH 39457

Locality: England, Southern United Kingdom.

Horizon: Purbeck Limestone Group.

Biostratigraphy:

Age: Berriasian Stage, Early Gallic Subepoch, Middle Early Cretaceous Epoch, Early Cretaceous.

Material: Left half of a plastron.

Paralectotype: BMNH 2265

Locality: Cuckfield Stone, West Sussex County, England, Southern United Kingdom.

Horizon:

Biostratigraphy:

Age: Valanginian Stage, Middle Neocomian Subepoch, Early Cretaceous Epoch, Early Cretaceous.

Material: Isoalted costal.

Referred material:

LYDEKKER, 1889

Locality: Isle of Wight County, England, Southern United Kingdom.

Horizon: Wealden.

Biostratigraphy:

Age: Early Cretaceous.

Material:

BMNH R 171: Imperfece carapace and plastron.

BMNH R 171x: Part of the left epiplastral.

BMNH R 171y An imperfect left hypoplastral.

 

Locality: Swanage, Dorsetshire County, England, Southern United Kingdom.

Horizon: Purbeck Beds.

Biostratigraphy:

Age: Portlandian Stage, Upper Tithonian Stage, Uppermost Malm Epoch, Latest Late Jurassic-Berriasian Stage, Lowermost Neocomian Subepoch, Lowermost Early Cretaceous Epoch, Early Cretaceous.

Material:

BMNH 46325: The right hyoplastral embedded in a slab of rock with the outer surface exposed.

 

Locality: Unknown, England, Southern United Kingdom.

Horizon: Purbeck Beds.

Biostratigraphy:

Age: Portlandian Stage, Upper Tithonian Stage, Uppermost Malm Epoch, Latest Late Jurassic-Berriasian Stage, Lowermost Neocomian Subepoch, Lowermost Early Cretaceous Epoch, Early Cretaceous.

Material:

BMNH R 1445: Slab of limestone showing an imperfcet costal bone of a small individual.