Sinosauropteryx
"Sinosauropteryx" was a small bipedal theropod, noted for its short arms, large first finger (thumbs), and long tail. The taxon includes some of the smallest known adult non-avian theropod specimens, with the holotype specimen measuring only in length, including the tail. However, this individual was relatively young. The longest known specimen reaches up to in length, with an estimated weight of .
Austroraptor
Considered large for a dromaeosaur, "Austroraptor cabazai" measured about in length from head to tail. In 2010, Gregory S. Paul estimated its length at 6 metres, its weight at 661.387 pounds or 300 kilograms. It is the largest dromaeosaur to be discovered in the Southern Hemisphere. The type specimen, labeled MML-195, consisted of a fragmentary skeleton including parts of the dinosaur's skull, the lower jaws, a few neck and torso vertebrae, some ribs, a humerus, and assorted bones from both legs. However little of the entire skeleton was found, what bones were available for analysis expressed some distinct characteristics that differentiate "Austroraptor" from other dromaeosaurs. "A. cabazai"'s 80 centimeter-long skull was low and elongated, much more so than that of other dromaeosaurs. Several of its skull bones bore some resemblance to that of the smaller troodontid deinonychosaurs. The front limbs of this taxon were short for a dromaeosaur, with its humerus less than half the length of its femur. Among the Dromaeodauridae, only this genus, "Tianyuraptor", "Zhenyuanlong" and "Mahakala" have similarly reduced forelimbs. The relative length of its arms has caused "Austroraptor" to be compared to another, more famous short-armed dinosaur, "Tyrannosaurus".