Category:Extant Ordovician first appearances
From Infogalactic: the planetary knowledge core
This category includes biological taxa that evolved during the Ordovician period of geologic time, between 485.4 and 443.8 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 | |
Pages in category "Extant Ordovician first appearances"
The following 18 pages are in this category, out of 18 total.
