Proexochokefalos

Proexochokefalos Temporal range: Callovian-Kimmeridgian ~165–152 Ma PreꞒ Ꞓ O S D C P T J K Pg N
Skull of P. heberti
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:	†Proexochokefalos Johnson et al., 2020
Type species
†Proexochokefalos heberti (Morel de Glasville, 1876)
Other species
†P. cf. bouchardi (Sauvage, 1872)
Synonyms
Steneosaurus cf. bouchardi Sauvage, 1872

Proexochokefalos (meaning "big head with big tuberosities") is an extinct genus of machimosaurid teleosauroid from the Jurassic of France^[1]

Classification

P. cf. bouchardi skull

The type species, S. heberti, was originally named "Steneosaurus" heberti by Morel de Glasville in 1876 from a complete skull and mandible (MNHN.F 1890-13) found in the Callovian aged Marnes de Dives near Villers-sur-mer in the Calvados department of Normandy, France.^{[2] [3] [4]} Steneosaurus depressus is a junior synonym. Another species referred to the genus, Proexochokefalos cf. bouchardi is known from remains from the Calcaire de Caen, France, and Reuchenette Formation, Switzerland.^[1]

References

1. 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. PMC 7548081. PMID 33083104.
2. Morel de Glasville M. 1876. Sur la cavité crânienne et la position du trou optique dans le Steneosaurus heberti. Bulletin de la Société Géologique de France 3(4):342-348
3. Brignon A. 2018. L’holotype de Steneosaurus heberti Morel de Glasville, 1876 : quelques précisions historiques sur une des plus remarquables découvertes paléontologiques faites aux Vaches Noires. L'Echo des Falaises, revue de l'Association paléontologique de Villers-sur-Mer, 22:7-22
4. Brignon A. 2018. La découverte du Steneosaurus heberti Morel de Glasville 1876 dans le Jurassique des Vaches Noires. Fossiles, revue française de Paléontologie, 36:40-46