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.

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