Biological taxa that first appeared during the Maastrichtian age of geologic time, between 72.1 and 66 million years ago during the Late Cretaceous period.
Subcategories
This category has the following 3 subcategories, out of 3 total.
E
G
Pages in category "Maastrichtian first appearances"
The following 7 pages are in this category, out of 7 total. This list may not reflect recent changes.