Jinfengopteryx wiki
Name Jinfengopteryx
Class Sauropsida
Name Translation Golden Phoenix Feather
Period Late Jurassic - Early Cretaceous
Size 2.3 ft (70 cm)

Jinfengopteryx (meaning golden phoenix feather) is a Troodontid from late Jurassic to early Cretaceous China.  It was about 2.3 ft (70 cm) and weighed about as much as a chicken.  Originally called a primitive bird but is more likely a primitive Troodontid.