Neosteneosaurus

Neosteneosaurus is a genus of machimosaurid, known from the Middle Jurassic Oxford Clay of the UK, and Marnes de Dives, France. The type species, N. edwardsi, was originally named as a species of Steneosaurus in 1868, but was moved to its own genus in 2020. Steneosaurus durobrivensis and Steneosaurus hulkei are considered junior synonyms.

Neosteneosaurus
Temporal range: Callovian-Oxfordian
~
Holotype and assigned specimen
Scientific classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Reptilia
Clade: Archosauria
Clade: Pseudosuchia
Clade: Crocodylomorpha
Clade: Crocodyliformes
Suborder: Thalattosuchia
Family: Machimosauridae
Subfamily: Machimosaurinae
Genus: Neosteneosaurus
Johnson et al., 2020
Species:
N. edwardsi
Binomial name
Neosteneosaurus edwardsi
(Eudes-Deslongchamps, 1868)
Synonyms
  • Steneosaurus dubroviensis
  • Steneosaurus edwardsi Eudes-Deslongchamps, 1868
  • Steneosaurus hulkei Andrews, 1913

In 2015, it was estimated at more than 7 m (23 ft) in length. In 2016, this estimate was revised down to 6.6 m (22 ft), but even with such measurement, this animal remains to be the largest known Middle Jurassic crocodylomorph.

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