Bison priscus, also known as steppe bison, is an extinct species of bison that lived in Europe and Asia during the Pleistocene epoch. The steppe bison is one of the most important large mammal species during the Quaternary period. Synonyms for bison priscus include the following terms: Bison antiquus, Bison bonasus, Bison latifrons, Bison occidentalis, and Bison spelaeus. These names are used interchangeably for the same extinct species of bison, and their description varies depending on the time period and geographical location. The evolution of bison is a fascinating subject, and the study of these fascinating animals' past can provide insight into our planet's natural history.