Genus: Mosasaurus non CONYBEARE, 1822

Species: mitchilli (DEKAY, 1830) LEIDY, 1860 (nomen vanum)
Etymology:
= Geosaurus mitchilli DEKAY, 1830
= Macrosaurus mitchilli (De KAY 1830) COPE, 1865 (nomen dubium)
= Liodon mitchilli (De KAY 1830) COPE, 1869-1870
= Tylosaurus mitchilli (De KAY 1830) MILLER, 1955

Holotype:

Locality: Monmouth County, New Jersey.

Horizon:

Biostratigraphy:

Age: "Secondary" horizon.

Material: Tooth with a fragment of jaw.

Referred material:

= Geosaurus soemeringi BRONN, 1838

Holotype:

Locality:

Horizon:

Biostratigraphy:

Age:

Material:

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Species: occidentalis MORTON, 1844 (nomen nudum)
Etymology:

Holotype:

Locality: Near Mount Holly, Burlington County, New Jersey.

Horizon: Ferruginous sand.

Biostratigraphy:

Age: Late Cretaceous.

Material: 38 nearly perfect vertebrae, a perfect tooth and several fragments of bone. Also a perfect coprolite.
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Species: caroliniensis GIBBES, 1851 (nomen vanum)
Etymology:

Holotype:

Locality: Darlington, Darlington County, South Carolina.

Horizon:

Biostratigraphy:

Age: Late Cretaceous.

Material: Mandibular fragment.

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Species: couperi GIBBES, 1851 (nomen vanum)
Etymology:

Holotype:

Locality: Banks of the Chattahoochie, Georgia.

Horizon:

Biostratigraphy:

Age: Late Cretaceous.

Material: Teeth.

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Species: crassidens MARSH, 1870 (nomen dubium)
Etymology:

Holotype: At Museum of Williams Collage.

Locality: North Carolina.

Horizon:

Biostratigraphy:

Age: Late Cretaceous.

Material: Fragment of right maxilla.

Referred material:

RUSSELL, 1967

New Material from North Carolina.

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