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 .
Dinosaur size
In 2014, the fossilized remains of a previously unknown species of sauropod were discovered in Argentina. The titanosaur, named "Patagotitan", would have been around 40m long and weighed around 77 tonnes, larger than any other previously found sauropod. The specimens found were remarkably complete, significantly more so than previous titanosaurs. Research as of 2017 estimated "Patagotitan mayorum" to have been long