 Osmólska and Roniewicz noted, however, that the features of this family were very similar to those of "Ornithomimus", but kept them separate on the possibility of convergence.Rinchen Barsbold used this family as potentially valid, and in 1976, named the infraorder Deinocheirosauria for it.Within the infraorder he placed Deinocheiridae and Therizinosauridae, finding reason for the families to be united.