Category:Olenekian first appearances
Biological taxa that first appeared during the Olenekian Age, the geologic time, between 251.2 and 247.2 million years ago, during the Early Triassic Epoch.
Subcategories
This category has only the following subcategory.
G
Pages in category "Olenekian first appearances"
The following 13 pages are in this category, out of 13 total. This list may not reflect recent changes.