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Size of two specimens (holotype in yellow, right) compared to a 1.8 m (5.9 ft) tall human For maniraptoran standards, Therizinosaurus obtained enormous sizes, estimated to have reached 9 to 10 m (30 to 33 ft) in length with estimated heights from 4 to 5 m (13 to 16 ft) and ponderous weights from 3 t (3.3 short tons) to possibly over 5 t (5.5 ...
Forelimbs of Therizinosaurus, specimen IGM 100/15 displayed at Nagoya City Science Museum. Therizinosaurs were long considered an enigmatic group, whose mosaic of features resembling those of various different dinosaur groups, and scarcity of their fossils, led to controversy over their evolutionary relationships for decades after their initial discovery.
Size compared to a human Segnosaurus was a large-bodied therizinosaur that is estimated to have been about 6–7 m (20–23 ft) long and to have weighed about 1.3 t (1.4 short tons). [ 7 ] [ 8 ] [ 6 ] Campione & Evans in 2020, however, calculated its body mass at 4.17 metric tons (4.60 short tons). [ 9 ]
Barsbold proposed the Deinocheirosauria and included Therizinosaurus as a member. [5] In another paper during the same year, Barsbold referred a shoulder and forearm found in the same strata as the Therizinosaurus type specimen to that genus because of the resemblance between the specimens claws. He observed that the anatomy of the arm and ...
Scale diagram comparing a human and the longest-known dinosaurs of five major clades An adult male bee hummingbird, the smallest known and the smallest living dinosaur. Size is an important aspect of dinosaur paleontology, of interest to both the general public and professional scientists.
The humerus (upper arm) was exceptionally robust and flexible with wide lower ends as seen on the humeri of the therizinosaurids Nothronychus and Therizinosaurus. Not only that but the biceps muscle was prominently well-developed in Therizinosaurus. [2] [12] In Segnosaurus, the deltopectoral crest (deltoid muscle attachment) was strongly built. [3]
Therizinosaurus is introduced in Jurassic World Dominion, [277] becoming one of the first fully feathered dinosaurs to appear in the film series. [191] The Therizinosaurus is partially blind due to cataracts and uses echolocation to get around, producing a series of clicking noises that reverberate in its environment.
Size compared to a human. Nanshiungosaurus was a relatively large-bodied therizinosaurid, estimated at 5 m (16 ft) long weighing 600–907 kg (1,323–2,000 lb). [5] [6] This taxon can be differentiated by the possession of stocky posterior-most cervical vertebrae with opisthocoel (meaning that they were concave on their posterior sides) centra. [3]