Category:Rhaetian first appearances
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Here is a list of articles in the category Rhaetian first appearances of the Biology portal. This category includes biological taxa of rank more inclusive than genus that evolved during the Rhaetian age of geologic time, between 208.5 and 201.3 million years ago, as well as genera and species that evolved during this time and persisted across multiple geological ages.
Pages in category "Rhaetian first appearances"
The following 11 pages are in this category, out of 11 total.