[D] Koparion douglassi [sG] [T]
Describer
Chure, 1994
Time
Jurassic Late
Classification
Saurischia Theropoda Tetanurae Coelurosauria Maniraptora ?Troodontidae
Diet
Carnivore
Fossilsite
Morrison Formation, of Dinosaur National Monument, US
Info
Genus - Typespecies
The indentification of teeth (Koparion - large triangle) as those of troodontids from the Upper Jurassic Morrison Formation would be more convincing if diagnostic postcranial elements would be discovered. Basal ornithomimosaurs and other theropods can have troodont-like teeth. However given the highly derived nature of Early Cretaceous troodontids, it is not unlikely that the family traces its origins back into the Jurassic.