Despite being bipedal, Deinocheirus had a large forearm
Deinocheirus Scientific Classification
Scientific name
Deinocheirus mirificus
Deinocheirus Physical Characteristics
14,330 pounds
Deinocheirus Distribition

Deinocheirus was a peculiar dinosaur that resided in Asia throughout the Late Cretaceous around 70 million years earlier. For approximately half a century after its initial exploration, researchers battled to identify its appearance or routines. You can contrast this dinosaur to a large goose due to its beaked head, a camel due to its bulge, and an ostrich due to its legs. Nonetheless, we currently recognize a lot more concerning this uncommon ornithomimosaur many thanks to a lot more current fossil explorations.

Summary and Dimension

Deinocheirus fishing
Deinocheirus dinosaur angling in a lake. It is assumed that the Deinocheirus was omnivorous, consuming both tiny animals and Elenarts108

Deinocheirus was a big ornithomimosaur that lived around 70 million years earlier throughout the Late Cretaceous. The only species of this dinosaur discovered thus far is the Deinocheirus mirificus

The genus name equates as “awful hand,” in Greek, a referral to one of the most well- maintained component of the dinosaur– its forelimbs. This was the component of the dinosaur that paleontologists discovered initially, coming up to 8 feet long. This consists of a 34.9 inches lengthy humerus, a 27.1- inch long ulna, and claws coming up to 7.7 inches.

A grown-up Deinocheirus considered 14,330 extra pounds and stood at 16 feet. The whole body come up to 36 feet in size. Unlike various other bipedal dinosaurs that often tend to have reasonably tiny arm, this dinosaur’s arms was rather big with candid claws on its 3 finger nails. Its legs additionally birthed brief, candid claws, and it had high neural backs creating a sail along its back. The head of the Deinocheirus had to do with 3.36 feet large.

Deinocheirus was a cumbersome dinosaur. Nonetheless, it had hollow bones, that made the dinosaur light-weight. It had high and reasonably straight dorsal ribs. Deinocheirus additionally had an S- rounded neck. The curvature of this dinosaur’s neck was even more than that of various other ornithomimosaurs. The head was long, slim, and high, with a vast expense at the end. The jaws birthed a beak as opposed to teeth, and the dinosaur’s leg did little operating.

The sail- back contained lengthy backs on its vertebrae, creating a factor over the center. This provided it the appearance of a huge bulge- back. Like various other ornithomimosaurs, the Deinocheirus was most likely feathery also. The tail finished in pygostyle- like vertebrae, suggesting a feasible visibility of a follower of plumes.

Diet – What Did Deinocheirus Eat?

Unlike various other ornithomimosaurs, Deinocheirus was an omnivore. The dinosaur had a beak similar to a duck’s, which suggests it foraged in water or near the ground, like hadrosaurs and sauropods. Likewise, based upon monitorings of the jaw muscle mass of this dinosaur, researchers ended that Deinocheiru s had a weak bite pressure. It additionally had a big tongue for absorbing food product. Consequently, the dinosaur is likely a lot more adjusted to preying on soft plant life near water bodies or in the woodland understory.

Researchers discovered greater than 1,400 belly rocks determining 0.31– 3.4 inches in the belly of one Deinocheirus sampling. Like birds today, there are concepts that these belly rocks aided the toothless Deinocheirus grind its food. Nonetheless, researchers additionally discovered fish vertebrae and ranges amongst the gastroliths, which recommends Deinocheirus was an omnivore.

Environment – When and Where Did Deinocheirus Live?

The 3 recognized Deinocheirus samplings recouped were from the Nemegt Development in the Gobi Desert of Southern Mongolia. Researchers think Deinocheirus was extensively dispersed within the Development, as the 3 recognized samplings were discovered 50 kilometers apart. The Deinocheirus most likely lived at the end of the Late Cretaceous Duration, throughout the Very Early Maastrichtian Phase, some 70 million years earlier. The location where the fossils were recouped most likely had superficial lakes, mudflats, streams, and river networks that might have experienced routine dry spells.

Deinocheirus – Dangers and Predators

Deinocheirus was a titan that stood equivalent to the tyrannosaurs in dimension. Healthy and balanced grownups had lengthy- clawed arms, and their plus size revealed they were no piece of cakes. Because of this, the only feasible predators of Deinocheirus were various other substantial dinosaurs. Aggressive theropods that shared environments with Deinocheirus consist of tyrannosaurids like Alioramus and Tarbosaurus and troodontids like Tochisaurus and Borogovia.

Discoveries and Fossils

Polish paleontologist, Zofia Kielan- Jaworowska, uncovered the initial recognized fossil remains ofDeinocheirus She uncovered the remains on July 9, 1965, as a component of a team exploration that consisted of the Mongolian paleontologist Rinchen Barsbold. The initial fossil of this dinosaur was discovered in the Nemegt Container of the Gobi Desert. The exploration group uncovered the sampling hidden in sandstone on a little hillside. It contained 2 forelimbs with the claws missing out on among them. The discover additionally consisted of 3 dorsal vertebrae, a full shoulder band, 5 ribs, and some interior body organs. The never ever- seen- prior to arms made the fossil its name. Nonetheless, up until 40 years after its exploration, researchers can not recognize the remainder of the strange dinosaur.

In 2006, researchers uncovered brand-new fossil pieces from the initial fossil website where the Deinocheirus was initial discovered. The brand-new aspects were pieces of gastralia with bite marks on them. Researchers determined the bite notes to be of aTarbosaurus This reveals that the initial fossil was most likely a sufferer of a Tarbosaurus strike. This clarifies the fragmented nature and badly maintained state of the bones.

By 2013, Lee, Barsbold, Currie, and associates introduced 2 brand-new Deinocheirus samplings prior to the yearly seminar by the Culture of Animal Paleontology. Among the samplings was discovered by Altan Ula IV throughout the 2006 explorations yet had actually currently been harmed by fossil poachers. Buglin Tsav discovered the 2nd sampling in 2009. Like the previous, it had actually additionally been dug deep into by poachers, that had actually gotten rid of the head, hands, and feet yet left a solitary toe bone. On May 1, 2014, the Belgian Gallery repatriated the taken bones to Mongolia. The exploration of these brand-new fossils dropped some a lot more light right into the fifty percent- a- century- old enigma of the Deinocheirus.

Termination – When Did Deinocheirus Pass Away Out?

Deinocheirus passed away out about 66 million years earlier throughout the K- T termination occasion. This was a mass termination occasion that eliminated greater than 90% of the non- bird dinosaurs still living at the end of the Cretaceous. Researchers think that this occasion was triggered by a significant disastrous occasion that had earth- large results such as substantial planet effect or volcanic task.

Similar Animals to the Deinocheirus

Similar Animals to Deinocheirus consist of:

  • Hadrosaurs – The hadrosaurs are additionally called duck- billed dinosaurs due to the level duck- expense appearance of the bones in their noes. The dinosaur was amongst one of the most leading herbivores of the Late Cretaceous Duration, discovered in Europe, Antarctica, Africa, and South America.
  • Gallimimus – Gallimimus was a mid- sized theropod dinosaur that resided in Mongolia throughout the late Cretaceous duration. Numerous fossils were uncovered in the Gobi Desert throughout the 1960s, and the dinosaur shared an environment with the Deinocheirus.
  • Tyrannosaurus rex – The T. rex is just one of the very best- stood for theropods ever before discovered, as it has a broader array than various other tyrannosaurids. It is just one of the biggest recognized land predators, and researchers think it puts in the toughest bite pressure amongst all earthbound animals.


  1. Wikipedia, Available here:
  2. National Geographic, Available here:
  3. Earth Archives, Available here:
  4. Dinopedia, Available here:

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