Genus: Peloneustus LYDEKKER, 1889
Etymology: Greek, pelos, “mud, clay”, Greek, neustes, “swimmer”: Oxford clay swimmer.

Species: philarchus (SEELEY, 1869) LYDEKKER, 1889
Etymology:

Referred material:

= Pliosaurus evansi SEELEY, 1869
Etymology:

Locality: Eysbury, near St. Neots, Huntingdonshire County, England, Southern United Kingdom.

Horizon: Oxford Clay.

Biostratigraphy:

Age: Callovian Stage, Upper Dogger Epoch, Late Jurassic.

Referred material:

BMNH R2437: Atlas, axis, 17 cervical vertebrae, some with neural arches and ribs still in situ, 2 petorals, 24 dorsals, and 1 caudal mostly wanting the neural arches, ribs, scapulae, coracoids, humeri, radii, ulnae, ilium, pubes, ischia, femur, tibiae, femur, tibiae, fibulae, and numerous paddle bones.
Note: Paleopathology, humerus shows avascular necrosis (ROTHSCHILDS & STORRS, 2003)

 

= Pliosaurus evansi SEELEY, 1869
Etymology:

Locality: Eysbury, near St. Neots, Huntingdonshire County, England, Southern United Kingdom.

Horizon: Oxford Clay.

Biostratigraphy:

Age: Callovian Stage, Upper Dogger Epoch, Late Jurassic.

Referred material:

BMNH R3891: Skull, mandible, atlas, and axis, and 16 cervical, 30 pectorals, dorsal, and ?sacral, 16 caudal vertebrae numerous separate neural arches, cervical, dorsal, sacral, and caudal ribs, fore paddles, ilia, hind paddles.
Note: Paleopathology, humerus shows avascular necrosis (ROTHSCHILDS & STORRS, 2003)