Deinocheirus

Deinocheirus is a genus of large theropod dinosaurs from Late Cretaceous Mongolia, known from the species Deinocheirus mirificus. Its enormous arms, broad duck-like bill, and humped back made it unusually distinctive.

Theropoda: Theropoda is the dinosaur group that includes birds and their extinct relatives. Deinocheirus belongs to this diverse dinosaur group despite its unusual body form.
Deinocheirus forelimb: The forelimb of Deinocheirus was exceptionally long and ended in large, curved claws. Its massive arms first brought the animal to scientific attention.
Mongolia–Poland Paleontological Expeditions: The Mongolia–Poland Paleontological Expeditions were joint fossil-collecting missions conducted in the Gobi Desert during the 1960s. The expeditions discovered Deinocheirus’s first known remains in 1965.
Deinocheirus holotype: The Deinocheirus holotype is the original specimen, consisting chiefly of enormous forelimbs and shoulder bones. These isolated remains founded the genus before its body was known.
Ornithomimosauria: Ornithomimosauria is a group of mostly long-legged theropods with toothless beaks. Deinocheirus is a giant, unusual member of this group.
Deinocheirus skull: The skull of Deinocheirus had a broad, toothless bill and a distinctive nasal crest. Its skull helps explain the animal’s feeding anatomy and unusual appearance.
Mongolian Gobi: The Mongolian Gobi is a desert region whose sedimentary rocks preserve extensive Cretaceous fossils. The Nemegt Formation in the Gobi preserves Deinocheirus fossils.
Deinocheirus MPC-D 100/127: MPC-D 100/127 is a substantially complete Deinocheirus skeleton recovered from Mongolia’s Nemegt Formation. This specimen revealed the animal’s overall proportions and distinctive back.
Dinosauria: Dinosauria is the group of reptiles that includes birds and all extinct dinosaurs. This broader group supplies the evolutionary context for Deinocheirus.
Deinocheirus tail: The tail of Deinocheirus was relatively short and bore tall neural spines near its base. Its vertebrae contribute to the evidence for a tall, humped back.

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OrnithomimusCompared with: Its bulky body contrasts with the slender build associated with Ornithomimus.