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 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.
Source: Wikipedia "Blancan" · CC BY-SA 4.0
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