Species: bennisoni (CAMP, 1942) CAMP, 1951
Etymology:
= Kolposaurus bennisoni CAMP, 1942

Holotype: UCMP 32778

Locality: UCMP V 3718, SW 1/4 of NW 1/4 of sec 20, T8S R8E, Mount Diablo Base Lind and Meridian, U. S. Geol. Survey, Pacheco Pass Quadrangle, in the hills about 7 miles S. 66'W. of Gustine, Merced County, California.

Horizon: Moreno Formation.

Biostratigraphy:

Age: Maastrichtian Stage, uppermost Senonian subepoch, Gulf Epoch, Late Cretaceous.

Material: Skull, 18 anterior caudal vertebrae, 4 ribs and some rib fragments.

Plotosaurus bennisoni Holotype: UCMP 32778; A) dorsal view; B) lateral view with mouth open, and C) lateral view with mouth closed (modified from CAMP, 1942).

Referred material:

BELL, 1997

UCMP 137247:

 

LINDGREN, ALWMARK, CALDWELL & FIORILLO, 2009

Locality: Central California.

Horizon: Tierra Loma Shale, Moreno Formation.

Biostratigraphy:

Age: Maastrichtian Stage, uppermost Senonian subepoch, Gulf Epoch, Late Cretaceous.

Material:

UCMP 152664: Fragmentary skeleton.
Note: With skin impressions.

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Species: tuckeri (CAMP, 1942) CAMP, 1951
Etymology:
= Kolposaurus tuckeri CAMP, 1942

Holotype:

Locality: UCMP V 3736, 900 feet E. and 1050 feet S. of the NW corner of Sec. 13, T14S, R11E, Mount Diablo Base Line and Meridian, U. S. Geol. Survey, Panoche quadrangle, about 22 miles due west of Mendota, Fresno County, California.

Horizon: Moreno Formation.

Biostratigraphy:

Age: Maastrichtian Stage, uppermost Senonian subepoch, Gulf Epoch, Late Cretaceous.

Material: 54 dorsal and caudal vertebrae, including 8 posterior dorsals, 1 sacral, 29 pygals, and 16 caudals with parts of fused chevrons, a few fragments of small posterior lumbar ribs are also present.

Referred material:

Locality: North of Coalinga, Fresno County, California.

Horizon: Moreno Formation.

Biostratigraphy:

Age: Maastrichtian Stage, uppermost Senonian subepoch, Gulf Epoch, Late Cretaceous.

Material:

LACM (CIT) 2750: Skull, fore part of skeleton, the shoulder girdles, and front paddles.

CIT 2751: Vertebrae.

CIT 2755: Vertebrae.

BELL, 1997

LACM (CIT) 2759, (CIT) 2804, (CIT) 2945:

UCMP 12678, 33913: Vertebrae.

HILTON, 2003

UCMP 45299: Vertebral column.

UCMP 45301: Vertebra.

UCMP 32943: 3 caudal vertebrae.

Note: One specimen has small fish remains in its stomach (as per BELL & BARNES, 2007)

Skeleton modified from Lindgren, J., Jagt, J. W. M., and Caldwell, M. W., 2007