Uintan
The Uintan 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 46,200,000 to 42,000,000 years BP lasting 4.2 million years.[1] It falls within the Eocene epoch, preceded by the Bridgerian and followed by the Duchesnean NALMA stages.
Substages
The Uintan is considered to be contained within the Lutetian sharing the upper boundary and contains the following substages:
- Late/Upper Uintan. Lower boundary source of the base of the Uintan (approximate).
- Early/Lower Uintan. Upper boundary source of the base of the Duchesnean (approximate)
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gollark: It could probably have gone another way, if the history of computing had gone somewhat differently.
gollark: Well, LXDE and most DEs and stuff *have* it, because icons are nice for some people.
gollark: Or, well, within a second or so.
gollark: It's also nice to be able to just type a command and get a program open immediately.
References
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