Genus: Sphenotitan MARTINEZ,
APALDETTI, COLOMBI, PRADEIRO, FERNANDEZ, MALNIS, CORREA, ABELIN, & ALCOBER,
2013
Etymology:
Spheno refers to Sphenodontia, Greek, titan, "giant"; in reference to the large
size of the new taxon.
Species: leyesorum emend MARTINEZ, APALDETTI, COLOMBI, PRADEIRO, FERNANDEZ,
MALNIS, CORREA, ABELIN, & ALCOBER, 2013
= Sphenotitan leyesi MARTINEZ, APALDETTI, COLOMBI, PRADEIRO, FERNANDEZ, MALNIS,
CORREA, ABELIN, & ALCOBER, 2013
Etymology: In honor of the Leyes family from the small town of Balde de Leyes,
which is located close to the type locality.
Holotype: PVJS 886
Locality: 'Balde de Leyes' fossil locality, San Juan Province, Marayes-El Carrizal Basin, Argentina.
Horizon: Quebrada del Barro Formation.
Biostratigraphy:
Age: Norian Stage, Late Triassic Epoch, Late Triassic.
Material: Partially articulated posterior portion of the skull; partial pterygoids, ectopterygoids, palatines, maxillae, right premaxilla, parietals, squamosals, quadrates, left jugal and postorbital, and the rear half of the lower jaws, from the level of posterior-most dentary teeth.
Referred material:
PVSJ 887: Left dentary.
PBSJ 888: Both incomplete maxillae, anterior part of both lower jaws, and both premaxillae.
PVSJ 889: Left maxillae.
PVSJ 890: Right quadrate.
PVSJ 891: Incomplete lower jaws.
PVSJ 892: Right palatine, pterygoid and ectopterygoid.
PVSJ 893: Right premaxilla and postorbital, left incomplete palatine and pterygoid.
PVSJ 895: Articulated sequence of three distal dorsal vertebrae, sacral vertebrae 1 and 2, and first caudal vertebra.