Genus: Gengasaurus PAPARELLA, MAXWELL, CIPRIANI, RONCACE & CALDWELL, 2017
Etymology: In honor of the town of Genga, Ancona, Marche, Italy where the specimen was found, and Greek, sauros, "lizard."

Species: nicosiai PAPARELLA, MAXWELL, CIPRIANI, RONCACE & CALDWELL, 2017
Etymology: In honor of Umberto Nicosia, prefessor and mentor of Palaeontology of the University of Rome 'Sapienza', who prepared the specimen in 1998-9, in the Abbey of San Vittore di Genga.

Holotype: MSVG 39617

Locality: Camponocecchio, Genga, Ancona Province, 43°24'28.05"N, 12°58'52.60"E, Marche, Italy.

Horizon: Calcari ad Aptici e Saccocoma Formation.

Biostratigraphy:

Age: Late Kimmeridgian-Early Tithonian Stage, Malm Epoch, Late Jurassic.

Material: Disarticulated skull, part of the pectoral girdle, and articulated verteral column lacking the posterior caudal region.