Orellan
From Infogalactic: the planetary knowledge core
The Orellan 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 33,900,000 to 33,300,000 years BP, a period of 0.6 million years.[1] It is usually considered to fall within the Early Oligocene. The Orellan precedes by the Whitneyan and follows the Chadronian NALMA stages.
The Orellan is contained within: Rupelian and shares the lower boundary.
References
| Paleogene Period | ||
|---|---|---|
| Paleocene Epoch | Eocene Epoch | Oligocene Epoch |
| Danian | Selandian Thanetian |
Ypresian | Lutetian Bartonian |Priabonian |
Rupelian | Chattian |
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