Steneosaurus tooth

The machimosaurids from the Early Jurassic of southern Germany formerly referred to Steneosaurus are now placed in their own genera (Macrospondylus, Mystriosaurus, and Plagiophthalmosuchus) (see Sachs et al. 2019; Johnson et al. 2020). For a long time, Steneosaurus was a wastebasket genus for several non-Teleosaurus, non-Machimosaurus teleosauroids, but Steneosaurus is now restricted to the type species S. rostromajor from the Middle Jurassic (Callovian) of Normandy, France (Aeolodon and Sericodon were reinstated as valid genera around the same time that "Steneosaurus" megarhinus was given the new genus Bathysuchus). The question is whether the tooth is Macrospondylus, Mystriosaurus, or Plagiophthalmosuchus.

Johnson, M.M.; Young, M.T.; Brusatte, S.L. (2020). The phylogenetics of Teleosauroidea (Crocodylomorpha, Thalattosuchia) and implications for their ecology and evolution. PeerJ 8: e9808. doi:10.7717/peerj.9808.

Sachs, S.; Johnson, M.M.; Young, M.T.; Abel, P. (2019). The mystery of Mystriosaurus: Redescribing the poorly known Early Jurassic teleosauroid thalattosuchians Mystriosaurus laurillardi and Steneosaurus brevior. Acta Palaeontologica Polonica 64 (3): 565–579. doi:10.4202/app.00557.2018.