Sminthidae is a family of mouse-like jumping rodents. They are represented by two extant genera, Sicista and Breviforamen, represented by 24 species found throughout most of Eurasia, from central Europe east to Siberia, and south to southern China. However, they were much more diverse and had a much wider range in prehistory, having multiple genera and being found not only in Eurasia but also throughout North America, where they existed up to the early Pleistocene. They have a well-attested fossil record which dates as far back as the early Oligocene.