Original sentence: Crows appear to have evolved in Asia from the corvid stock, which had evolved in Australia.Crows appear to have evolved in central Asia and radiated out into North America, Africa, Europe, and Australia.However, the branch that would produce the modern groups such as jays, magpies and large predominantly black Corvus had left Australasia and were concentrated in Asia by the time the Corvus evolved.The latest evidence  regarding the crow's evolution indicates descent within the Australasian family Corvidae
Edited sentence: Crows appear to have descended in Asia from the corvid stock, which had descended in Australia.Crows appear to have originated in central Asia and radiated out into North America, Africa, Europe, and Australia.However, the branch that would produce the modern groups such as jays, magpies and large predominantly black Corvus had left Australasia and were concentrated in Asia by the time the Corvus was acknowledged.The latest evidence  regarding the crow's diversification indicates descent within the Australasian family Corvidae