Deinocheirus (claw) is the largest ornithomimosaurian (ostrich dinosaur) discovered; the largest known specimen measured up to 11 m (36 ft) long, with an estimated weight of 6.36 t (14,000 lb). The two other known specimens are smaller, the holotype being 94% as big while the smallest, a subadult, only 74% as big.When only the incomplete holotype arms were known, various sizes were extrapolated from them by different methods