Genus: Ophthalmosaurus SEELEY, 1874
Etymology: Greek, ophthalmos, “eye” and Greek, sauros, “lizard”: Eye lizard.

Species: natans (MARSH, 1879) HUENE, 1922

Referred material:

MASSARE, & YOUNG, 2005
= Baptanodon MASSARE & YOUNG, 2003

Locality: Redwall area, University of Wyoming location VP 2002-02, Northwestern Natrona County, Wyoming.

Horizon: Lower Redwater Shale, Sundance Formation.

Biostratigraphy: Camptonectes zone.

Age: Oxfordian Stage, Lower Malm Epoch, Late Jurassic.

Material: A string of 10 articulated vertebrae and at least as many disarticulated ones, along with many disarticulated ribs, parts of two limbs, one partially articulated, and as yet unidentified bone.
Note: Stomach contacts with badly fragmented coleoid cephalopod hooklets.