Genus: Leviathanochelys CASTILLO-VISA, LUJAN, GALBART & SELLES, 2022
Etymology:
Leviathan, in reference to the Biblical marine beas, in allusion to the body size of the news speciesl and Latinized Greek, chelys, "turtle."
Species: aenigmatica CASTILLO-VISA, LUJAN, GALBART & SELLES, 2022
Etymology: Latinized adjective from the Greek noun, ainigma, "enigma, conundrum or riddle"; in reference to the peculair anatomical characteristics of its pelvis and carapce.
Holotype: MCD9884
Locality: Cal Torrades, Coll de Nargo, Lleida PRovince, Catalonia, North-eastern Spain.
Horizon: Lower part, Perles Formation.
Biostratigraphy:
Age: Campanian Stage, Senonian Subepoch, Gulf Epoch, Late Cretaceous.
Material:
MCD9884a: Posteror portion of the carapace including the neural plates 5-8, boht left and right fragmentary costals 5-8 and putative verteral cenra, nearly unidentifible.
MCD9884b: Partial pelvic girdle, including the left pubis.
MCD9884c: Right pubis.
MCD9884d: Left ischium.
MCD9884e: Right iscihum.
MCD9884f: Left ilium.
MCD9884g: Right ilium.