Thoracosaurus neocesariensis De Kay 1842 (crocodilian)

Reptilia - Crocodylia

Alternative combination: Gavialis neocesariensis

Synonyms: Crocodilus clavirostris Morton 1845, Crocodilus dekayi Leidy 1852 [objective synonym], Gavialis fraterculus Cope 1869, Holopsisuchus brevispinus Cope 1869, Hyposaurus fraterculus Cope 1869, Sphenosaurus clavirostris Morton 1845, Thoracosaurus meirsanus Troxell 1925, Thoracosaurus mullicensis Troxell 1925

Belongs to Thoracosaurus according to C. A. Brochu 2004

See also Agassiz 1849, Brochu 2006, Carpenter 1983, Cope 1869, Denton et al. 1997, Hay 1902 and Troxell 1925

Sister taxa: Thoracosaurus borissiaki, Thoracosaurus isorhynchus, Thoracosaurus macrorhynchus, Holops cordatus, Holops brevispinus, Holops pneumaticus, Holops glyptodon

Type specimens:

  • Thoracosaurus neocesariensis: ANSP 9437, a mandible (Partial jaw)
  • Crocodilus dekayi: ANSP 9437, a mandible (Partial jaw).
  • Holopsisuchus brevispinus: AMNH 2200.
  • Hyposaurus fraterculus: Its type locality is Pemberton Marl Company pit (Hornerstown), which is in a Maastrichtian marginal marine marl in the Hornerstown Formation of New Jersey.
  • Sphenosaurus clavirostris: ANSP 10079, a partial skull. Its type locality is Vincentown, which is in a Thanetian coastal horizon in the Vincentown Formation of New Jersey.
  • Thoracosaurus meirsanus: YPM 404, a partial skull (Partial skull). Its type locality is Hornerstown area (Hornerstown Fm.) (PROXY), which is in a Maastrichtian marginal marine marl in the Hornerstown Formation of New Jersey.
  • Thoracosaurus mullicensis: YPM 283, a partial skeleton. Its type locality is Mullica Hill, which is in a Campanian/Maastrichtian terrestrial horizon in the Navesink Formation of New Jersey.

Ecology: carnivore


• Eocene of United States (2: New Jersey, Virginia collections)

• Paleocene of United States (1: New Jersey)

• Cretaceous to Paleogene of United States (2: New Jersey)

• Cretaceous of France (3), the Netherlands (1), United States (20: Georgia, Maryland, New Jersey, North Dakota)

Total: 29 collections each including a single occurrence

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Specimen images are retrieved through the ePANDDA API.

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