Genus: Gargoyleosaurus CARPENTER, MILES & CLOWARD, 1998
Etymology: Latin, The ‘gargoyle reptile’, in reference to the gargoyle-like appearance of the skull in profile.

Species: parkpinorum CARPENTER, MILES & CLOWARD, 1998
Etymology: In honor of J. Parker and T. Pinegar who discovered the holotype.
= Gargoyleosaurus parkpini CARPENTER, MILES & CLOWARD, 1998

Holotype: Denver Museum of Natural History, DMNH 27726

Locality: Bone Cabin Quarry East (Eastward extension of old Bone Cabin Quarry), 8 miles north of Como, Medicine Bow Anticline (also called Flat top Anticline), Albany County, Wyoming.

Horizon: Salt Wash Member, Upper part of the Morrison Formation.

Biostratigraphy: Zone 2.

Age: Comobluffian age, Kimmeridgian Stage, uppermost Malm Epoch, Late Jurassic.

Material: A nearly complete skull and dentary, a partial skeleton with the first 3 cervical vertebrae and first 2 cervical rings.

Referred material:

CARPENTER, DiCROCE, KINNEER, & SIMON, 2013

Locality: Simon Quarry, Big Horn County, Wyoming.

Horizon: Morrison Formation.

Biostratigraphy:

Age: Late Jurassic.

Material:

DMNS 58831: Complete synsacrum, with damaged neural spines, articulated wiht a complete right ilium.