Category:Olenekian first appearances
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Here is a list of articles in the category Olenekian first appearances of the Biology portal. 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.
Pages in category "Olenekian first appearances"
The following 12 pages are in this category, out of 12 total.
