Biological taxa that first appeared during the Valanginian Age, the geologic time between 139.8 and 132.9 million years ago during the Early Cretaceous era of the Cretaceous Period in the Mesozoic Era.
Subcategories
This category has the following 2 subcategories, out of 2 total.
Pages in category "Valanginian first appearances"
The following 10 pages are in this category, out of 10 total. This list may not reflect recent changes.