Genus: Leptocleidus ANDREWS, 1922
Etymology: Greek, leptos, “slender” and Greek, kleid- (kleis), “key, clavicle”: Slender clavicle.
= Peyereus STROMER, 1935
Etymology: In honor of Bernard Peyer (1885-1963), Swiss paleontolgist.

Species: superstes ANDREWS, 1922
Etymology:

Holotype: NHM (old BMNH) R4824

Locality: Berwick Brick Pit (Cuckmere Brick Company), Berwick, near Lewes, Sussex County, England, Southern United Kingdom.

Horizon: Upper Weald Clay Formation, Wealden Clay Group.

Biostratigraphy:

Age: Barremian Stage, Upper Neocomian Subepoch, Lower Early Cretaceous Epoch, Early Cretaceous.

Material: Anterior portion of skull, vertebrae, shoulder girdle, 2 ventral ribs and humerus.

Referred material:

= Leptocleidus cf. L. superstes BARTHOLOMAI 1965

Locality: Mount Morgan, Queensland State, Australia.

Horizon: Razorback beds.

Biostratigraphy:

Age: Early Jurassic.

Material:

QM F3983-4036: Fragmentary remains of a juvenile and bone fragments of an adult.

Note: Family Leptocleididae or Rhomaleosauridae?

Note: Lagoonal or close inshore deposits.

 

PERSSON

Locality: Picnic Bush, Cape of Good Hope, South Africa.

Horizon: Uitenhage beds.

Biostratigraphy:

Age: Neocomian Subepoch, Lower Early Cretaceous Epoch, Early Cretaceous.

Material:

Number: Not given: Skull, vertebrae and limb bones.

Note: Lagoonal or close inshore deposits.

 


= Leptocelidus cf. L. supterstes RICH, RICH, WAGSTAFF, McEWEN-MASON, DOUTHITT, & GREGORY

Locality: South-eastern Australia.

Horizon:

Biostratigraphy:

Age: Early Cretaceous.

Material:

Number: Not given: Isolated teeth and ribs.

Note: Lagoonal or close inshore deposits.


= Leptocleidus cf. L. supterstes RITCHIE, 1991

Locality: Coober Pedy, South Australia.

Horizon:

Biostratigraphy:

Age: Early Cretaceous.

Material:

Number: Not given: Fragmentary skull.

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Species: capensis (ANDREWS, 1911) CRUICKSHANK, 1997
Etymology:
= Plesiosaurus capensis ANDREWS, 1911
= Peyereus capensis (ANDREWS, 1911) STROMER, 1935

Holotype: SAM-K5822

Locality: Picnic Bush site, Swartkops River Valley, Overlooking Redhouse Farm, 33°49’S 25°33’E, Eastern Cape Province, South Africa.

Horizon: Sundays River Formation, Uitenhage Beds.

Biostratigraphy:

Age: Upper Valanginian or Lower Hauterivian Stage, Neocomian Subepoch, Lower Early Cretaceous Epoch, Early Cretaceous.

Material: Nearly complete skull, fragmentary dentary, teeth, 22 cervical vertebrae and 16 dorsals (9 cervicals are associated with the 16 dorsals).

Note: Lagoonal or close inshore deposits.
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Species: clemai CRUICKSHANK & LONG, 1997
Etymology: In honor of Mr. John M. Clema of Perth, Western Australia, who has generously supported and assisted in fossil collecting expeditions by the Western Australian Museum over the years 1993-1995.

Holotype: WAM 92.8.1-1 to 68

Locality: The exact localities have been kept private at the request from the property manager, but they are recorded in the Department of Earth and Planetary Sciences locality register (within the Western Australian Museum), Kalbarri region, Western Australia State, Australia.

Horizon: Upper metere of the Birdrong Sandstone.

Biostratigraphy:

Age: Hauterivian-Barremian Stage, Neocomian Subepoch, Lower Cretaceous Epoch, Early Cretaceous.

Material: A partial skeleton.

Breakdown as follows;

WAM 92.8.1-2: Right femur.

WAM 92.8.1-3: Part of a tibia.

WAM 92.8.1-4: Parts of the left femur.

WAM 92.8.1-5A, B: Possible fragments of lower jaw, lacking teeth.

WAM 92.8.1-7: Pelvic girdle element.

WAM 92.8.1-8: Part of a propodial head.

WAM 92.8.1-9: Part of left ilium.

WAM 92.8.1-56: Portion of ilium shaft.

WAM 92.8.1-57: Lower jaw? Fragment.

WAM 92.8.1-58: ?part of scapula.

WAM 92.8.1-59-64: Various bone fragments and parts of neural arches.

WAM 92.8.1-65: Left ulna.

WAM 92.8.1-66: Right ulna.

WAM 92.8.1-67: Right radius.

WAM 92.8.1-68: Part of a propodial?

WAM 92.8.1-10 to 5: And some 45 vertebrae.

Referred material:

WAM 94.1.6-1 to 100: A less well preserved partial skeleton dimensionally very similar, approximately 100 associated, partially articulated bones found underneath a single large concretion.

 

LONG, 1998

Locality: Lightning Ridge, northern New South Wales State, Australia.

Horizon: Griman Creek Formation.

Biostratigraphy:

Age: Albian Stage, Middle Gallic Subepoch, Early Late Cretaceous Epoch, Early Cretaceous.

Material:

AM F 102462: A large propodial.
Note: May not belong to this species.