Borissiakia fossil map
Where fossils of Borissiakia have been found, shown on the Earth as it looked about 15 million years ago and on today’s map.
Dots are fossil collections recorded in the Paleobiology Database. The “then” view moves today’s fossil sites back to their positions 15 million years ago (the time slice nearest the median age of the fossils) using the Merdith et al. (2021) plate model; positions are approximate. Open on the timeline map →

| Group | Early mammals |
|---|---|
| Lived | 23.04–15.98 million years ago (Aquitanian to Burdigalian) |
| Periods | Neogene |
| Family | Chalicotheriidae |
| Named by | Butler 1965 |
| Fossil records | 2 occurrences at 1 locations (PBDB) |
| Found in | China |
| Rock formations | Xianshuihe |
About Borissiakia
Borissiakia is an extinct genus of chalicothere, a group of herbivorous, odd-toed ungulate (perissodactyl) mammals, that lived during the late Oligocene in Kazakhstan. They had claws that were likely used in a hook-like manner to pull down branches, suggesting they lived as bipedal browsers.
Borissiakia reached 4 metres (13 ft) in length and reached 2.3 metres (7.5 ft) tall at the shoulders. It could weigh up to 600 kilograms (1,300 lb).
Text in “About” is quoted from the Wikipedia article Borissiakia (revision 1372742866), licensed under CC BY-SA 4.0; introduction excerpted verbatim, formatting removed. Ages, family, authority and fossil records: Paleobiology Database, accessed 23 October 2026. Ages are those of the rock layers the fossils were found in. Wikidata: Q4945497.