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 .
Borealosaurus
The type and only species is "Borealosaurus wimani", based on fragmentary remains from the Sunjiawan Formation of Liaoning. It has been estimated that this creature measured 12 metres in length, with a weight of 10 tonnes. The morphology of a mid-distal caudal vertebra was considered suggestive of a relationship with the Mongolian titanosaur "Opisthocoelicaudia". However, in their overview of Cretaceous sauropod remains from Central Asia, Averianov and Sues considered "Borealosaurus" a non-lithostrotian titanosaur due to the lack of procoely in the middle caudal vertebrae.