Yinlong

"Hidden dragon"
Length:
1.2 m (4 ft)
Weight:
15 kg (33 lbs)
Time:
161,000,000-
156,000,000 B.C.
Location:
Xinjiang, China
Species:
Yinlong downsi
This little herbivore is the earliest and most primitive ceratopsian currently known to science. Unlike later members of the group, Yinlong had tiny canine teeth, a rather short beak, and only a shadow of a frill at the back of its skull. It also was bipedal, an adaptation that would be lost in ceratopsians as they grew larger and more advanced. Interestingly enough, this herbivore lived alongside Guanlong, the oldest known tyrannosaur, and its name is a reference to the Ang Lee martial arts film Crouching Tiger, Hidden Dragon, which was filmed near the site where the animal was uncovered.
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