Category:Olenekian first appearances
From Infogalactic: the planetary knowledge core
This category includes biological taxa of rank more inclusive than genus that evolved during the Olenekian age of geologic time, between 251.2 and 247.2 million years ago, as well as genera and species that evolved during this time and persisted across multiple geological ages.
Pages in category "Olenekian first appearances"
The following 7 pages are in this category, out of 7 total.