Pelagornis is a widely known genus of the prehistoric pseudotooth birds. P. chilensis was identified based on an "exquisitely and exceptionally preserved" fossil skeleton that was found to be 70 percent complete. The specimen is considered the largest fossil bird yet excavated. Previous bony-toothed bird fossils included wings dug up in pieces, if it all, making it harder to accurately establish wingspan.
Series Chilean and Antarctic fossil vertebrates