Category:Silurian first appearances
Biological taxa that first appeared during the Silurian Period, the geologic time between 443.8 and 419.2 million years ago, during the Paleozoic Era.
Subcategories
This category has the following 6 subcategories, out of 6 total.
Pages in category "Silurian first appearances"
The following 95 pages are in this category, out of 95 total. This list may not reflect recent changes.