Neosteneosaurus

Neosteneosaurus is a genus of machimosaurid, known form 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,[1] but was moved to its own genus in 2020. Steneosaurus durobrivensis and Steneosaurus hulkei are considered junior synonyms.[2]

Neosteneosaurus Temporal range: Callovian-Oxfordian ~165–158 Ma PreꞒ Ꞓ O S D C P T J K Pg N
Holotype and assigned specimen
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Reptilia
Suborder:	†Thalattosuchia
Family:	†Machimosauridae
Subfamily:	†Machimosaurinae
Genus:	†Neosteneosaurus Johnson et al., 2020
Species:	†N. edwardsi
Binomial name
†Neosteneosaurus edwardsi (Eudes-Deslongchamps, 1868)

Skull of the junior synonym S. durobrivensis

References

1. Eudes-Deslongchamps E. 1867-1869. Notes Paléontologiques. Caen and Paris: 320-392.
2. Johnson, Michela M.; Young, Mark T.; Brusatte, Stephen L. (2020). "The phylogenetics of Teleosauroidea (Crocodylomorpha, Thalattosuchia) and implications for their ecology and evolution". PeerJ. 8: e9808. doi:10.7717/peerj.9808.