Proexochokefalos

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

Proexochokefalos
Temporal range: Callovian-Kimmeridgian
~165–152 Ma
Skull of P. heberti
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Reptilia
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

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.
  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
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