Becker : Neogene Avian Localities of North American :

| 1987 | | Kart, F:15x22,5 cm, 200 S. | WG: Buch | | An annotated list of North American localities where significant bird fossils have been discovered. Each entry includes the location of the find, the geologic formation, the relative age, the absolute dates if know, and a list of the decribed avian taxa. | [E] | |