Blancan
The Blancan North American Stage on the geologic timescale is a North American faunal stage according to the North American Land Mammal Ages chronology (NALMA), usually considered to start in the early-mid Pliocene Epoch and end by the mid-Pleistocene. It is typically set from around 4.9 Ma (million years ago) to 1.8 Ma, an estimated duration of about 3.1 million years. The Blancan is preceded by the Hemphillian and followed by the Irvingtonian NALMA stages. The Blancan is named after the fossil site of Mount Blanco in Crosby County, Texas.