Outline: a typical theropod

Yixian Fm., ChinaNamed 2017

Jianianhualong

Type species Jianianhualong tengi

Lived
126 to 120 million years ago, Early Cretaceous
Diet
Omnivore
Group
Theropods, Troodontidae
Found in
China
Named by
Xu et al. 2017

Where its fossils were found

The evidence

Today

1 find

125 million years ago

Map: C. R. Scotese, PALEOMAP

Field notes

About Jianianhualong

What it was like

Jianianhualong was a small feathered troodontid. Its skeleton preserves feathers, including long tail feathers that were uneven in shape, like flight feathers. It suggests such feathers appeared before flight in this group.

Its world

It lived in the Early Cretaceous, in what is now China. It comes from the Yixian Formation, a land of lakes and forests shared with Yutyrannus, Sinosauropteryx and Psittacosaurus.

How it was found

Xu and colleagues named Jianianhualong in 2017. The type species is Jianianhualong tengi.

Lived alongside

Found in the same rock formations

Close relatives

Other members of Troodontidae

Sources: WikidataNamed in: X. Xu, P. Currie, and M. Pittman, L. Xing, Q. Meng, J. Lü, D. Hu, C. Yu. 2017. Mosaic evolution in an asymmetrically feathered troodontid dinosaur with transitional features. Nature Communications 8:14972:1-12