Erliansaurus bellamanus
Scientific classification
Kingdom: Animalia
Phylum: Chordata
clade: Dinosauria
Order: Saurischia
Suborder: Theropoda
Superfamily: Therizinosauroidea
Genus: Erliansaurus
Xu et al., 2002
Binomial name
Erliansaurus bellamanus
Xu et al., 2002

Erliansaurus bellamanus is a species of therizinosauroid theropod dinosaur from the Late Cretaceous of Mongolia. It existed during the Late Cretaceous (Santonian).

Gregory S Paul estimated the size of the thigh bone of Erilansaurus bellamanus to be around 412 cm long.[1]


Erliansaurus skeleton

Skeletal restoration

A fossil of Erliansaurus was found near Sanhangobi in Inner-Mongolia. The type species, Erliansaurus bellamanus, was described by Xu Xing, Zhang Xiaohong, Paul Sereno, Zhao Xijin, Kuang Xuewen, Han Jun and Tan Lin in 2002. The generic name refers to the town of Erlian. The specific name is derived from Latin bellus, "beautiful", and manus, "hand", in reference to the exquisite preservation of the forelimb.[2]

Screenshot 2020-03-07 W020090813371861636279 pdf(1)

Left humerus seen from two angles

The holotype, LH V0002, was uncovered in the Iren Dabasu Formation dating from the Santonian stage c 85 million years ago. It consists of a partial skeleton, lacking the skull, of a subadult individual. It includes five vertebrae of the neck, back and tail; a right scapula; a left forelimb lacking the carpus; parts of the pelvis; a right femur; both tibiae, a right fibula and elements of the metatarsus.


An analysis by Lindsay Zanno in 2010 found Erliansaurus as the sister taxon of the Therizinosauridae.[3]



  1. Paul, G.S., 2010, The Princeton Field Guide to Dinosaurs, Princeton University Press p. 158
  2. Xu, X. (2002). "A new therizinosauroid (Dinosauria, Theropoda) from the Upper Cretaceous Iren Dabasu Formation of Nei Mongol". Vertebrata PalAsiatica 40: 228–240. 
  3. Lindsay E. Zanno (2010). "A taxonomic and phylogenetic re-evaluation of Therizinosauria (Dinosauria: Maniraptora)". Journal of Systematic Palaeontology 8 (4): 503–543. DOI:10.1080/14772019.2010.488045.