Eastern gorilla
Grauer's gorillas and mountain gorillas were previously thought to be two of the three subspecies of one single species, the gorilla ("Gorilla gorilla"). However, genetic research has shown that the two eastern subspecies are far more closely related than the western subspecies: the western lowland gorilla ("G. gorilla gorilla"), which justified the separate classification. The two eastern subspecies are now classified as "G. beringei".
Caenagnathidae
Caenagnathids are only known from the Late Cretaceous of North America and Asia. The earliest and most primitive known caenagnathid is "Caenagnathasia martinsoni", from the Bissekty Formation of Uzbekistan. The largest is the enormous "Gigantoraptor erlianensis".