Named By: Barsbold & Perle - 1983.
Classification: Chordata, Reptilia, Dinosauria, Saurischia, Theropoda, Therizinosauroidea.
Species: E. mongoliensis (type).
Size: Uncertain due to lack of remains, but roughly estimated at somewhere between 5 and 7 meters long.
Known locations: Mongolia - Bayan Shireh Formation.
Time period: Cenomanian/Turonian of the Cretaceous.
Fossil representation: Partial post cranial remains.
Enigmosaurus was so named because when the pelvis was found the shape and form of it confused the describing palaeontologists because it was so unlike those of others. In actuality Enigmosaurus is a genus of therizinosaur, a special type of theropod dinosaur that are noted for having long necks and extra-long claws on their fingers. Enigmosaurus is still only known by incomplete remains, but these seem to represent an individual that was of a larger average for a therizinosaur.
- Жыщнйе динозаврй мела Монголий. Трудй – Совместная Совестко-Монгольской Палеотологыческая Зкспедитсия [Carnivorous dinosaurs from the Cretaceous of Mongolia]. Transactions of the Joint Soviet-Mongolian Paleontological Expedition 19, pp. 5-117 - Barsbold & Perle - 1983.
- A taxonomic and phylogenetic re-evaluation of Therizinosauria (Dinosauria: Maniraptora) - Journal of Systematic Palaeontology 8 (4): 503–543 - Lindsay E. Zanno - 2010.