In another thread, it was suggested these 2 groups overlapped geographically in the past. Does anyone know if this is true?
Yes, it is true.
Familia
Cathartidae de Lafresnaye, 1839
Diatropornis ellioti (Milne-Edwards, 1892)
Eocene or Oligocene of France
Parasarcoramphus milneedwardsi Mourer-Chauviré, 2002
Eocene or Oligocene of France
Familia
Accipitridae Vieillot, 1816
Subfamilia Gypaetinae C. L. J. L. Bonaparte, 1854
Palaeoborus rosatus A. H. Miller et Compton, 1939
Early Miocene of South Dakota
Palaeoborus howardae Wetmore, 1936
Middle Miocene of Nebraska
Palaeoborus umbrosus (Cope, 1874)
Earlt Pliocene of New Mexico
Neophrontops vetustus Wetmore, 1943
Middle Miocene of Nebraska
Neophrontops ricardoensis Rich, 1980
Middle Miocene of California
Neophrontops dakotensis Compton, 1935
Middle Pliocene of South Dakota
Neophrontops slaughteri Feduccia, 1974
Late Pliocene of Idaho
Neophrontops vallecitoensis Howard, 1963
Middle Pleistocene of California
Neophrontops americanus L. H. Miller, 1916
Late Pleistocene of California
Neogyps errans L. H. Miller, 1916
Late Pleistocene of California, Nevada, Nebraska, Mexico
Anchigyps voorhiesi Z. Zhang, Feduccia et James, 2012
Early Late Miocene of Nebraska
Arikarornis macdonaldi Howard, 1966
Early Miocene of South Dakota
You can find the descriptions and all the details of these species in the "
descriptions of all fossil…", Just
search for the species you want to know more of and you will find the thread where you can find the description of the species.
Enjoy your fossil birds!
Fred