Here is a list of articles in the category Tortonian first appearances of the Biology portal. Biological taxa that first appeared during the during the Tortonian age of geologic time, between 11.62 and 7.25 million years ago during the Late Miocene of the Neogene period. Also genera and species that evolved during this time and persisted across multiple geological ages.
The following 8 pages are in this category, out of 8 total.