Sinosauropteryx
"Sinosauropteryx" was a small theropod with an unusually long tail and short arms. The longest known specimen reaches up to in length, with an estimated weight of It was a close relative of the similar but older genus "Compsognathus", both genera belonging to the family Compsognathidae. Only one species of "Sinosauropteryx" has been named: "S. prima", meaning "first" in reference to its status as the first feathered non-avialian dinosaur species discovered. Three specimens have been described. The third specimen previously assigned to this genus represents either a second, as-yet unnamed species or a distinct, related genus.
Gigantoraptor
In a quarry at Saihangaobi, in Sonid Left Banner (Inner Mongolia), numerous remains of the sauropod "Sonidosaurus" have been uncovered since 2001. Chinese paleontologist Xu Xing was asked to reenact the discovery of "Sonidosaurus" in April 2005 for a Japanese documentary. Xu obliged them by digging out a thighbone. As he wiped the bone clean, he suddenly realized it was not from a sauropod, but from an unidentified theropod in the size class of "Albertosaurus". He then stopped the filming to secure the serendipitous find. This way, the discovery of the "Gigantoraptor" holotype fossil was documented on film.