The Tiffanian North American Stage on the geologic timescale is the North American faunal stage according to the North American Land Mammal Ages chronology (NALMA), typically set from 60,200,000 to 56,800,000 years BP lasting. It is usually considered to overlap the Selandian and Thanetian within the Paleocene. The Tiffanian is preceded by the Torrejonian and followed by the Clarkforkian NALMA stages.

Substages

The Tiffanian is considered to contain the following substages:

Fauna

=== Notable mammals === Multituberculata - non-therian mammals Metatheria - marsupials Apatotheria - primitive, arboreal mammals Condylarthra - archaic ungulates Dinocerata - large, tusked herbivores Eulipotyphla - insectivorous mammals Primatomorpha - primates and relatives Proteutheria - basal eutherians