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.
Sue (dinosaur)
The largest "T. rex" specimen discovered, Sue has a length of , stands tall at the hips, and has been estimated at between as of 2018. In 2011, other size estimates were between , although the authors stated that their upper and lower estimates were based on models with wide possible errors, and that they "consider them [these extremes] to be too skinny, too fat, or too disproportionate". A further estimate portrayed a leaner build, placing the specimen at , while others placed this specimen as low as in weight. Displayed separately from the whole body, the skull weighs .