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The Generic Allocation of Ibis pagana Milne-Edwards, with a Review of Fossil Ibises (Aves: Threskiornithidae)

Storrs L. Olson
Journal of Vertebrate Paleontology
Vol. 1, No. 2 (Sep., 1981), pp. 165-170
Stable URL: http://www.jstor.org/stable/4522847
Page Count: 6
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The Generic Allocation of Ibis pagana Milne-Edwards, with a Review of Fossil Ibises (Aves: Threskiornithidae)
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Abstract

On the basis of characters of the tarsometatarsus, Ibis pagana Milne-Edwards from the early Miocene of France is assigned to the living genus Plegadis. Plegadis gracilis A. H. Miller and Bowman, 1956, from the late Pliocene of North America, is a junior homonym of Milnea (=Plegadis) gracilis Lydekker, 1891, and the new name Plegadis pharangites is proposed as a substitute. Plegadis paganus and P. pharangites constitute the only valid Tertiary paleospecies of Threskiornithidae. All other extinct taxa that have been referred to this family are here considered to be Aves incertae sedis except for Theristicus wetmorei Campbell and Eudocimus peruvianus Campbell, from the late Pleistocene of Peru, and the flightless Quaternary taxa Apteribis glenos Olson and Wetmore of Hawaii and Xenicibis xympithecus Olson and Steadman of Jamaica.

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