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Deinocheirus was an unusual ornithomimosaur, the largest of the clade at 11 m (36 ft) long, and weighing 6.5 t (7.2 short tons). Though it was a bulky animal, it had many hollow bones which saved weight. The arms were among the largest of any bipedal dinosaur at 2.4 m (7.9 ft) long, with large, blunt claws on its three-fingered hands.
In 2009, Manning and colleagues undertook additional analysis dromaeosaur claw function, using a numerical modelling approach to generate a 3D finite element stress/ strain map of a Velociraptor hand claw. [44] They went on to quantitatively evaluate the mechanical behavior of dromaeosaur claws and their function.
In 2014, Lautenschlager tested the function of various therizinosaur hand claws—including Therizinosaurus—through digital simulations. Three different functional scenarios were simulated for each claw morphology with a force of 400 N applied in each scenario: scratch/digging; hook-and-pull; and piercing.
Their diagnosis was "Gigantic carnivorous dinosaurs with long, slender scapula and long fore limbs; manus with three, uniformly developed fingers, ending in strong, large claws". Based on Deinocheirus again, the temporal range and distribution for the family was found limited to the Upper Cretaceous of the Upper Nemegt Formation of the Gobi ...
Deinocheirus was largest ornithomimosaur at 11 m (36 ft) long, and weighing 6.36 t (14,000 lb). The arms were among the largest of any bipedal dinosaurs at 2.4 m (7.9 ft) long, with large, blunt claws on its three-fingered hands. The legs were relatively short, and bore blunt claws.
Mexidracon is unique amongst ornithomimids for possessing extremely lengthened metacarpals. Serrano-Brañas et al. (2025) hypothesized that these long hands may have allowed it to more efficiently gather vegetation, a function proposed for other herbivorous theropods with long arms and large claws such as the deinocheirid Deinocheirus and therizinosaurs.
Intricate hand-engraved details. Geometric shapes and step-cut facets. Halo or antique-style settings. 8. The Alternative Wedding Ring.
He distinguished Segnosauridae from the theropod families Deinocheiridae and Therizinosauridae (then only known from the genera Deinocheirus and Therizinosaurus, both mainly represented by large forelimbs found in Mongolia) by features of their humeri and hand claws. [5]