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.
Trix (dinosaur)
The decision to use replicas from Sue for filling several missing body parts such as the feet, was made due to Sue being roughly the same length and robusticity, and the fact that they both have been estimated to be very old for a "Tyrannosaurus". Most estimates suggest sizes from 12 (39.5 ft) to 12,5 meters in length (41 ft).