|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||External Literature Search||Age range and collections|
Reptilia - Sauropterygia - Pliosauridae
If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.
|F. R. O'Keefe 2001||A plesiomorphic member of clade Pliosauridae possessing the following autapomorphies: seven premaxillary teeth; ectopterygoid boss contacts jugal exclusively; propodials very long.|
|P. Vincent 2011||A moderately sized (3.4 m) pliosauroid with the following autapomorphy: ilium as long as the pubis, and longer than the ischium; and with the following unique combination of characters: an elongate rostrum, vomers not extending far posteriorly beyond the internal nares; a lateral palatal fenestra; no suborbital fenestra; an ectopterygoid boss contacting the jugal and the posterior part of the maxilla; no anterior interpterygoid vacuity; palatines not in contact with the internal nares; braincase in ventral view showing a concave area surrounded laterally and posteriorly by two excrescences projecting ventrally; seven premaxillary teeth; teeth ornamented with a series of longitudinal enamel ridges; 30 or 31 cervical vertebrae; short and wide limb girdles; median border of the pubis straight, forming an almost orthogonal angle with the anterior border; ischia short compared to width; ilium long, flat, only slightly twisted; anterior border of the humerus straight and shorter than femur; epipodials longer than wide; two supplementary bones in each paddle, the most proximal located between the distal margin of the ulna/fibula and the proximal margin of the ulnare/calcaneum, the most distal one located just posterior to the first, close to the postaxial margin of the ulnare/calcaneum|