Genus: Pleurosternon OWEN, 1853
Etymology:
= Mesochelys EVANS & KEMP, 1975
Etymology:

Species: bullocki (OWEN, 1842)
Etymology:
= Platemys bullocki OWEN, 1842
= Digerrhum bullocki (OWEN, 1842) COPE, 1870
= Pleurosternum bullocki (OWEN, 1842) LYDEKKER, 1889

Holotype: BMNH R911

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

Horizon: Purbeck Limestone Group, Portland stone-Upper Purbeck Beds.

Biostratigraphy:

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

Material:

Referred material:

MILNER, 2004

BMNH 28433: Plastron.

BMNH R1524: Plastron.

BMNH R3413: Complete carapace.

BMNH 21351, 24298 (internal), 35574, 38733, 43621, R1891, R5486: Carapaces.

BMNH R1889, R3727: Complete shells.

BMNH 35772, 40646, R4317: Several plates.

BMNH R 6868 (G64), R6869 (G45), R6879 (G46), R6879 (G41), R6880 (G59), R6883 (G31), R6687 (G37), R6888 (G65), R6891 (G32), R6895 (G33), R6897 (G36), R6912 (G35), R6913 (G170):

BGS 58053: Partial carapace.

BGS 92123-6: A carapace.

BMB 001795-1717 (Willett Collection), CAMSM J5330-5331, CAMSM J5333-5336, DORCM G 15, DORCM G179, DORCM G6262, one uncatalogued: Carapces.

GLAHM V.914: Scute.

MANCH L9521, L11346, OUM J13793: Partial carapace lacking most marginals.

OUM J13794: Partial carapace (internal).

OUM J13797: Plastron (internal).

YPM-PU 3363: Large carapace.

YPM-PU 3364: Carapace lacking most marginals.

 

 

Locality: Durlston Bay Cinder Bed (DB 111), Dorset County, England, Southern United Kingdom.

Horizon:

Biostratigraphy:

Age: Purbeck, Uppermost Tithonian, Uppermost Malm Epoch, Late Jurassic.

Material:

BMB 001790: A right hypoplastron.

 

Locality: Beckles' 'Mammal Pit', Swanage, Dorset County, England, Southern United Kingdom.

Horizon:

Biostratigraphy:

Age: Purbeck, Uppermost Tithonian, Uppermost Malm Epoch, Late Jurassic.

Material:

BMNH 48262: Carapace and plastron of a juvenile.
Note: Figured by LYDEKKER, 1889

BMNH 48263: carapace of a juvenile.

BMNH 48263a, c, e: 3 carapaces of a juveniles.

BMNH 48264: Interior of carapace of a juvenile.

BMNH 48343-48344: Plastra of a juveniles.

BMNH 48347: Partial plastron of a juvenile.

BMNH 48353-48354: Carapaces of a juveniles.
Note: LAPPARENT DE BROIN & MURELAGA, 1999 suggest some may belong to a new genus of small pleurosternid.

 

 

 

SAUVAGE, 1894

Locality: Boulannais, France.

Horizon:

Biostratigraphy:

Age: Late Portlandian, Uppermost Tithonian, Uppermost Malm Epoch, Late Jurassic.

Material:

Number: Not given:

 

= Pleurosternon emarginatum OWEN, 1853 (partim, syntype)

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

Horizon: Purbeck Limestone Group, Portland stone-Upper Purbeck Beds.

Biostratigraphy:

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

Material:

BMNH 46317: Carapace and plastron.

 

= Pleurosternon concinnum OWEN, 1853
Etymology:
= Pleurosternon concinna (OWEN, 1853) MAACK, 1869

Holotype: DORCM G.17 (old Private collection of William Dunnington)

Locality: Devizes, Somerset County, England, Southern United Kingdom.

Horizon:

Biostratigraphy:

Age: Purbeck, Uppermost Tithonian, Uppermost Malm Epoch, Late Jurassic.

Material: Juvenile carapace and plastron.


= Pleurosternon ovatum OWEN, 1853
Etymology:
= Platemys ovata (OWEN, 1853) MAACK, 1869

Holotype: BMNH 28618

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

Horizon:

Biostratigraphy:

Age: Purbeck, Uppermost Tithonian, Uppermost Malm Epoch, Late Jurassic.

Material: Shell.

 

= Pleurosternon owenii SEELEY, 1869
Etymology:

Holotype: CAMSM J5328 (Seeley No. 3) (old Woodwardian Museum)

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

Horizon:

Biostratigraphy:

Age: Purbeck, Uppermost Tithonian, Uppermost Malm Epoch, Late Jurassic.

Material: Carapace.

 

= Pleurosternon sedgwicki SEELEY, 1869
Etymology:

Holotype: CAMSM 35326 (Seeley No. 1) (old Woodwardian Museum)

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

Horizon:

Biostratigraphy:

Age: Purbeck, Uppermost Tithonian, Uppermost Malm Epoch, Late Jurassic.

Material: Carapace.

 

= Pleurosternon vansittarti SEELEY, 1869
Etymology:

Holotype: CAMSM J5327 (Seeley No. 2) (old Woodwardian Museum)

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

Horizon:

Biostratigraphy:

Age: Purbeck, Uppermost Tithonian, Uppermost Malm Epoch, Late Jurassic.

Material: Carapace.

 

= Glyptops ruetimeyeri (LYDEKKER) WATSON, 1910 (partim) (non LYDEKKER, 1889)

Locality: A quarry 2 miles (1.3 km) west of Swange, Dorset County, England, Southern United Kingdom.

Horizon: Middle Purbeck Cap/Feather Bed.

Biostratigraphy:

Age: Purbeck, Uppermost Tithonian, Uppermost Malm Epoch, Late Jurassic.

Material:

MANCH L9520: Carapace with marginals and plastron.

 

 

= Pleurosternon portlandicum LYDEKKER, 1889
Etymology:

Holotype: NHM UK OR (old BMNH) 44807

Locality: Isle of Portland, Dorset County, England, Southern United Kingdom.

Horizon: ‘Stone’, Portland stone.

Biostratigraphy:

Age: Late Portlandian, Uppermost Tithonian, Uppermost Malm Epoch, Late Jurassic.

Material: Skull.

Referred material:

ROYO & GOMEZ, 1927

Locality: Benagber, Valence Province, Spain.

Horizon: Wealden Formation.

Biostratigraphy:

Age: Early Cretaceous.

Material:

Number: Not given:

= Hylaeochelys sp DELAIR, 1958

Locality: Dorset County, England, Southern United Kingdom.

Horizon:

Biostratigraphy:

Age: Purbeck, Uppermost Tithonian, Uppermost Malm Epoch, Late Jurassic.

Material:

BMNH R6986 (G34):

 

= Mesochelys durlstonensis EVANS & KEMP, 1975
Etymology:

Holotype: Cambridge University Museum of Zoology, UMZC (CAMMZ) T 1041

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

Horizon: Possibly Durlston Formation.

Biostratigraphy:

Age: Purbeckian, Berriasian Stage, Neocomian Subepoch, Lowermost Early Cretaceous Epoch, Early Cretaceous.

Material: Skull and partial postcranial skeleton.