Category:Oligocene first appearances
From Infogalactic: the planetary knowledge core
This category includes biological taxa of rank more inclusive than genus that evolved during the Oligocene epoch of geologic time, between 33.9 and 23 million years ago, as well as genera and species that evolved during this time and persisted across multiple geological epochs.
| Preceded by Proterozoic Eon | Phanerozoic Eon | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Paleozoic Era | Mesozoic Era | Cenozoic Era | ||||||||||
| Cambrian | Ordovician | Silurian | Devonian | Carboniferous | Permian | Triassic | Jurassic | Cretaceous | Paleogene | Neogene | 4ry | |
|
|||||||||||
Pages in category "Oligocene first appearances"
The following 18 pages are in this category, out of 18 total.
