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Phylogeny of the chelydrid turtles : a study of shared derived characters in the skull / Eugene S. Gaffney --.
By: Gaffney, Eugene S.
Publication info: Chicago :Field Museum of Natural History,1975.
Contributed by: University of Illinois Urbana Champaign
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A revision of the chelonian genus Bothremys (Pleurodira: Pelomedusidae) / Eugene S. Gaffney -- and Rainer Zangerl --.
By: Gaffney, Eugene S. - Leibhardt, Maidi Wiebe - Zangerl, Rainer,
Publication info: [Chicago] :Field Museum of Natural History,1968.
Contributed by: University of Illinois Urbana Champaign
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