†family Therizinosauridae Maleev 1954 (coelurosaur)
Synonyms: Enigmosauridae Barsbold and Perle 1983, Nanshiungosauridae Dong and Yu 1997, Segnosauridae Perle 1979
Full reference: E. A. Maleev. 1954. Noviy cherepachoobrazhniy yashcher v Mongolii [New tortoise-like saurian from Mongolia]. Priroda 1954(3):106-108
Parent taxon: Therizinosauroidea according to D.-q. Li et al. 2008
Sister taxa: Alxasauridae, Beipiaosaurus, Dendroolithidae, Enigmosaurus, Falcarius, Martharaptor, Suzhousaurus
Subtaxa: Erliansaurus, Erlikosaurus, Eshanosaurus, Nanshiungosaurus, Neimongosaurus, Nothronychus, Segnosaurus, Therizinosaurus
Ecology: ground dwelling herbivore