Genus: Torvoneustes ANDRADE, YOUNG, DESOJO & BRUSATTE, 2010
Etymology: Latin, torvus-, "savage" and Greek, neustes, "swimmer": In reference to teh morphology of the skull, postcrania, adn dentition, which indicate a large adn robust marine peredator, as indicated in its original descrption by WILKINSON, YOUNG & BENTON, 2008

Species: carpenteri (WILKINSON, YOUNG & BENTON, 2008) ANDRADE, YOUNG, DESOJO & BRUSATTE, 2010 (Type)
= Dakosaurus carpenteri WILKINSON, YOUNG & BENTON, 2008
Etymology: In honor of Mr. Simon Carpenter, who discovered the holotype and subsequent postcranial material, yieldong 'Carpenter's earth lizard'.
= Geosaurus carpenteri (WILKINSON, YOUNG & BENTON, 2008) YOUNG & de ANDRADE, 2009

Holotype: BRSMG Ce1765

Locality: Westbury, Wiltshire County, England, Southern United Kingdom.

Horizon: Kimmeridge Clay Formation.

Biostratigraphy: Upper mutabilis to upper eucoxus zones.

Age: Upper Kimmeridgian Stage, Middle Malm Epoch, Late Jurassic.

Material: An incomplete skull that consists of maxilla, parietal premaxilla, prefrontals, frontals, pairetal, nasal, postorbital and squamosal.


BRSMG Cd7203: Mandibular fragments, 36 vertebrae including 5 cervicals, 12 dorsals, 1 sacral and 8 caudal vertebrae, ribs, including 3 cervical and approximately 12 dorsals, humerus, possible propodial and metacarpal, left ischium, left and right femora.


Species: coryphaeus YOUNG, de ANDRADE, ETCHES & BEATTY, 2013
Etymology: Latinized Greek, koryphaios, "leader of a movement or a chorus": So named as the specimen is beautifully (and three-dimensionally) preserved, helping to elucidate metriorhynchid cranial form. Koryphaios is derived from Koryphe, meaning the top of the head; appropriate as the external surface of the dermatocranium in this specimen has intriguing evolutionary implications. Coryphaeus is used as a noun in apposiiton.

Holotype: MJML K1863

Locality: Studley Grange landfill, Lydiard Tregoze, Wiltshire County, England, Southern United Kingdom.

Horizon: Lower Kimmeridge Clay Formation.

Biostratigraphy: Pictonia baylei sub-Boreal ammonite zone.

Age: Lowermost Kimmeridgian Stage, Middle Malm Epoch, Late Jurassic.

Material:Three-dimensionally preserved skull (lacking most of the rostrum), the posterior half of the left mandibular ramus, and seven isolated teeth found in close association with the skull.


Etymology: In refernce to Mexico where the specimen was found.
= Plesiosaurus (Polypticodon) mexicanus WIELAND, 1910
= ?Cricosaurus mexicanus (WIELAND, 1910) YOUNG, BRUSATTE, RUTA, & ANDRADE, 2010

Holotype: UNAM IGM 9026

Locality: At a point north of Putla, 6 km south-southwest of Tlaxiaco, Mixteca, Oaxaca State, Southern most Mexico.

Horizon: Sabinal Formation.


Age: Kimmeridgian Stage, Middle Malm Epoch, Late Jurassic.

Material: Fragment of cranium including part of the maxillae and dentaries showing 12 teeth in oclussal position, and splenials forming the mandibular symphysis.