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Gigantoraptor size (holotype) compared to a 1.8-metre-tall (5.9 ft) human. Gigantoraptor is the largest known oviraptorosaur for which skeletal material is available. . Approximately three times as long and 35 times heavier than the largest earlier-discovered oviraptorosaur Citipati, the holotype of Gigantoraptor has been estimated at 8 m (26 ft) long with a height of 3.5 m (11 ft) at the hips ...
Citipati was a large-bodied oviraptorid, with the largest individuals being emu-sized animals; it has been estimated at 2.5–2.9 m (8.2–9.5 ft) in length with a weight between 75–110 kg (165–243 lb), [21] [22] [23] and was one of the largest known oviraptorosaurs until the description of Gigantoraptor. [24]
Megaraptora is a clade of carnivorous theropod dinosaurs with controversial relationships to other tetanuran theropods. Its derived members, the Megaraptoridae are noted for their large hand claws and powerfully-built forelimbs, which are usually reduced in size in other large theropods. Megaraptorans are incompletely known, and no complete ...
Megaraptor was initially described as a giant 8 metres (26 ft) long coelurosaur, known primarily from a single claw (about 30 cm long) that resembled the sickle-shaped foot claw of dromaeosaurids. [2] The discovery of a complete front limb, however, showed that this giant claw actually came from the first finger of the hand.
They are distinct for their characteristically short, beaked, parrot-like skulls, with or without bony crests atop the head. They ranged in size from Caudipteryx, which was the size of a turkey, to the 8-meter-long, 1.4-ton Gigantoraptor. [2] The group (along with all maniraptoran dinosaurs) is close to the ancestry of birds.
Caenagnathidae is a family of derived caenagnathoid dinosaurs from the Cretaceous of North America and Asia. They are a member of the Oviraptorosauria, and relatives of the Oviraptoridae. [2] Like other oviraptorosaurs, caenagnathids had specialized beaks, [3] long necks, [4] and short tails, [5] and would have been covered in feathers.
Size comparison of Hagryphus. As the specific name indicates, Hagryphus giganteus was a particularly large oviraptorosaur, estimated by the describers to have been approximately three meters (10 ft) long, which makes it one of the largest members of the clade Oviraptorosauria (Barsbold, 1976), apart from the later described Gigantoraptor.
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