Cricosaurus Wagner, 1858

Sachs, Sven, Young, Mark T., Abel, Pascal & Mallison, Heinrich, 2019, A new species of the metriorhynchid crocodylomorph Cricosaurus from the Upper Jurassic of southern Germany, Acta Palaeontologica Polonica 64 (2), pp. 343-356 : 345

Genus Cricosaurus Wagner, 1858

Type species: Stenosaurus elegans Wagner, 1852 ; Daiting, Bavaria, Germany; Mörnsheim Formation, Hybonoticeras hybonotum Tethyian Ammonite Zone , lower Tithonian, Upper Jurassic. Now referred to as Cricosaurus elegans ( Wagner, 1852) Wagner, 1858 [following recommendation 67B of the International Commission on Zoological Nomenclature ( ICZN) code].

Emended diagnosis.—Metriorhynchid crocodylomorph with the following unique combination of characters: dentition has variable labiolingual compression, with some species having teeth with a sub-circular cross-section and others with a sub-rectangular one; dentition is bicarinate, but the carinae are faint (i.e., a low carinal keel); external surface of the dermatocranium is largely smooth, lacking conspicuous ornamentation; acute angle formed by the posterolateral and posteromedial processes of the frontal; dorsal margin of the supratemporal arcade is lower than the medial process of the frontal; orbits as large as the supratemporal fenestrae (at least in morphologically mature individuals); surangular and angular well-developed, anterolaterally exceeding beyond the anterior margin of the orbits; symphysial part of the mandible low; lateral margin of the prefrontal rounded; external nares separated by a bony premaxillary septum, with the nares terminating posterior to the second maxillary alveoli; calcaneum tuber absent or vestigial; proximal end of metatarsal I greatly enlarged (modified from Young and Andrade 2009 and Herrera et al. 2013b).