''Equus lenensis'', the Lena horse, is an extinct species of horse from the

Late Pleistocene The Late Pleistocene is an unofficial Age (geology), age in the international geologic timescale in chronostratigraphy, also known as Upper Pleistocene from a Stratigraphy, stratigraphic perspective. It is intended to be the fourth division of ...

and Holocene of Siberia, Some sources have considered it a subspecies of the

wild horse The wild horse (''Equus ferus'') is a species of the genus ''Equus'', which includes as subspecies the modern domesticated horse (''Equus ferus caballus'') as well as the endangered Przewalski's horse (''Equus ferus przewalskii''). The Europea ...

. Genetic studies show that ''E. lenensis'' does not descend from the last common ancestor of living horses, and is estimated to have diverged from them approximately 115,000 years ago, though it is more closely related to modern horses than either are to a highly divergent horse lineage from the Late Pleistocene of the Iberian Peninsula. The youngest remains of the species date to 5,000 years

Before Present Before Present (BP) years, or "years before present", is a time scale used mainly in archaeology, geology and other scientific disciplines to specify when events occurred relative to the origin of practical radiocarbon dating in the 1950s. Becaus ...

(~3000 BC). A notable Lena horse specimen was found in Batagaika crater in Russia which was preserved almost completely intact, and with liquid blood within its preserved veins.

References

Prehistoric horses Extinct animals of Russia Equus (genus) {{paleo-oddtoedungulate-stub