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meaning: "Gargoyle lizard"
Named By: K. Carpenter, C. Miles & K. Cloward in 1998
Time Period: Late Jurassic, 154-150 Ma
Location: USA, Wyoming - Morrison Formation
Size: Estimated about 3 to 4 meters long. Skull 29 centimetres long
Diet: Herbivore
Fossil(s): Skull and post cranial skeleton
Classification: | Chordata | Reptilia | Dinosauria | Ornithischia | Thyreophora | Ankylosauria | Nodosauridae | Polacanthinae |

Gargoyleosaurus (meaning "gargoyle lizard") is one of the earliest ankylosaurs known from reasonably complete fossil remains. Its skull measures 29 centimetres (11 in) in length, and its total body length is an estimated 3 to 4 metres (9.8 to 13.1 ft). It may have weighed as much as 1 tonne (2,200 lb). The holotype was discovered at the Bone Cabin Quarry West locality, in Albany County, Wyoming in exposures of the Upper Jurassic (Kimmeridgian to Tithonian stages) Morrison Formation.

The type species, G. parkpinorum (originally G. parkpini) was described by Ken Carpenter et al. in 1998. A mounted skeletal reconstruction of Gargoyleosaurus parkpinorum can be seen at the Denver Museum of Nature and Science. Gargoyleosaurus was present in stratigraphic zone 2 of the Morrison Formation.

Read more about Gargoyleosaurus at Wikipedia
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