This is a category for birds (avialans) that are only known from fossil evidence or oral traditions. Note however, that unlike this category, Category:Birds is only for neornithines.
Several early taxa are not unequivocally classified as birds or non-avian dinosaurs; for these, both inclusion in this category and Category:Feathered dinosaurs is feasible. As soon as a taxon is generally accepted to be a bird or a non-avian dinosaur, it should only be listed in one of the aforementioned categories as appropriate.
A note on the use of subcategories and page listings:
A page should be listed here if it deals with:
- a taxon above the rank of genus
- a genus or species which occurred over several geologic periods.
Other genera, species and subspecies should be listed under the appropriate subcategory.
Subcategories
This category has the following 12 subcategories, out of 12 total.
Pages in category "Prehistoric birds"
The following 16 pages are in this category, out of 16 total. This list may not reflect recent changes.