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Pliosaurus patagonicus
Taxonomy
Pliosaurus patagonicus was named by Gasparini and O'Gorman (2014). Its type specimen is MLP 80-V-29-1, a partial skull (Anterior of the left maxilla; part of the skull roof and palate incompletely preserved and affected by post-mortem displacement; partially preserved mandible), and it is a 3D body fossil. Its type locality is Cerro Lotena, which is in a Tithonian marine horizon in the Vaca Muerta Formation of Argentina.
Synonymy list
| Year | Name and author |
|---|---|
| 2014 | Pliosaurus patagonicus Gasparini and O'Gorman figs. 2-6 |
| 2016 | Pliosaurus patagonicus O'Gorman p. 38 |
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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.
†Pliosaurus patagonicus Gasparini and O'Gorman 2014
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| Z. Gasparini and J. P. O'Gorman 2014 | The new species is diagnosed based on a autapo-morphic trait and a unique combination of characters. Theautapomorphy is regarded as putative given that this region isnot preserved in Pliosaurus rossicus Novozhilov, 1948, the lastdentary alveolus far ahead of the coronoid eminence, at a dis-tance (300 mm) equivalent to the last fourteen functional alve-oli. The unique combination of features consists of: shortmandibular symphysis with six pairs of alveoli for functionalteeth, the second to fifth being the largest; symphyseal inter-alveolar walls very narrow; labial margins of the mandibularsymphysis almost straight in dorsal and lateral views, withouta mediolateral expansion of the caniniform region(=“wavelets”); in lateral view the dorsoventral height is almostconstant along the symphysis; splenial penetrates ventrally inthe symphysis up to the 3rd–4thpair of alveoli and the coronoidup to the level of the 6thpair of alveoli; coronoid eminencelow; mandibular rami almost straight; functional and re-placement teeth trihedral with a flat, smooth labial surface anda convex lingual surface with longitudinal enameled ridges. |