= Plesiosaurus ichthyspondylus SEELEY, 1869 (nomen dubium)
Etymology:

Lectotype: Woodwardian Museum.

Locality: Reach, near Cambridge, Cambridgeshire County, England, Southern United Kingdom.

Horizon: Upper Greensand.

Biostratigraphy:

Age: Cenomanian Stage, Upper Middle Gallic Subepoch, Lowermost Gulf Epoch, Middle Cretaceous.

Material: Vertebral centra.

Referred material:

SCHRODER, 1885

Locality: Old Prussia.

Horizon:

Biostratigraphy:

Age: Late Senonian Subepoch, Gulf Epoch, Late Cretaceous.

Material:

Number: Not given: Centrum.