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The Pelagornithidae, commonly called pelagornithids, pseudodontorns, bony-toothed birds, false-toothed birds or pseudotooth birds, are a prehistoric family of large seabirds. Their fossil remains have been found all over the world in rocks dating between the Early Paleocene and the Pliocene - Pleistocene boundary.
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Pelagornis, the type genus of the family Pelagornithidae, was long unrecognized as a pseudotooth bird as it was known mainly from arm bones. Thus, though the Pelagornithidae were long recognized as very distinct, they were allied with the cormorant and gannet in suborder Sulae (or superfamily Sulides in suborder Pelecanae) before it was ...
Pelagornis sandersi comparison with the Andean condor (Vultur gryphus) and the wandering albatross (Diomeda exulans). The sole specimen of P. sandersi has a wingspan estimated between approximately 6.06 and 7.38 m (19.9 and 24.2 ft), [9] giving it the largest wingspan of any flying bird yet discovered, twice that of the wandering albatross, which has the largest wingspan of any extant bird (up ...
Gigantornis eaglesomei is a very large prehistoric bird described from a fragmentary specimen from the Eocene of Nigeria.It was originally described as a representative of the albatross family, Diomedeidae, but was later referred to the pseudotooth or bony-toothed bird family, Pelagornithidae.
With an estimated wingspan of about 1 meter (3.3 feet), Protodontopteryx was the size of an average gull—much smaller than all post-Paleocene pelagornithids. It had a much stouter humerus than a typical pelagornithid, indicating it was less specialized toward sustained soaring.
PDF fulltext Archived 2011-07-18 at the Wayback Machine Ono, Keiichi (1989): A Bony-Toothed Bird from the Middle Miocene, Chichibu Basin, Japan. Bulletin of the National Science Museum Series C: Geology & Paleontology 15 (1): 33–38.
Enaliornis was originally named Pelagornis ("sea bird") by Seeley in 1866, but that name was preoccupied by a Miocene bird related to the pelicans.Three species have been described: the small Enaliornis sedgwicki, the medium-sized Enaliornis seeleyi, and the large Enaliornis barretti.