Equus dalianensis

Equus dalianensis is an extinct species of horse that lived in northern China during the Late Pleistocene, named after Dalian in Liaoning province, where its remains were first found. It was a relatively large horse, larger than both the living Przewalski's horse and the onager, and a true caballine horse closely related to living domestic and wild horses. Its mitochondrial lineage diverged from living horses over 800,000 years ago. A 2026 genomic study found it dependent on C3 grasslands and concluded that it was not a distinct lineage but a subclade of the broader Northeast Eurasian wild horse group, closely related to and interbreeding with northeast Siberian horses. It died out in the late Pleistocene extinctions as the Holocene warmed.