Category:Extant Oligocene first appearances
From Infogalactic: the planetary knowledge core
This category includes biological taxa that evolved during the Oligocene epoch of geologic time, between 33.9 and 23 million years ago and have not yet gone extinct.
| Preceded by Proterozoic Eon | Phanerozoic Eon | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Paleozoic Era | Mesozoic Era | Cenozoic Era | ||||||||||
| Cambrian | Ordovician | Silurian | Devonian | Carboniferous | Permian | Triassic | Jurassic | Cretaceous | Paleogene | Neogene | 4ry | |
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Pages in category "Extant Oligocene first appearances"
The following 27 pages are in this category, out of 27 total.
