Purranisaurus, RUSCONI, 1948

Young, Mark T., Brusatte, Stephen L., Ruta, Marcello & Andrade, Marco Brandalise De, 2010, The evolution of Metriorhynchoidea (mesoeucrocodylia, thalattosuchia): an integrated approach using geometric morphometrics, analysis of disparity, and biomechanics, Zoological Journal of the Linnean Society (Zool. J. Linn. Soc.) 158 (4), pp. 801-859 : 855

PURRANISAURUS RUSCONI, 1948

Type species: Purranisaurus potens Rusconi, 1948 .

Valid species: Purranisaurus casamiquelai (Gasparini & Chong, 1977) comb. nov.; P. potens Rusconi, 1948 ; Purranisaurus westermanni (Gasparini, 1980) comb. nov.

Geological range: Lower Callovian–lower Tithonian.

Geographical range: South American endemic ( Argentina and Chile).

Emended diagnosis: Metriorhynchid thalattosuchian with less than 18 teeth per maxilla, and more than 20 teeth per dentary; all teeth lack carinae; lacks conspicuous ornamentation on the cranial bones; the antorbital fossa is elongate, narrow, and oriented obliquely, and is enclosed by the lacrimal, maxilla, and jugal; the antorbital pseudofenestra is enclosed by the lacrimal, nasal, and maxilla; the supratemporal arch in lateral view is straight; the internal nares opens out posteriorly into the buccal cavity, with the palatines creating an M-shape orientated anteriorly; the maxilla–palatine suture forms a broad U-shape orientated anteriorly; the parocciptal process terminates with a sharp incline dorsolaterally; the squamosal contributes less than 50% to the supratemporal arch.