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same time the Roth skull was elevated to the genus' neotype as Ameghino's skull could not be found. This highlights one of the key sources of confusion regarding Niolamia. While these early publications largely treated Ameghino's and Roth's turtles as separate specimens, the former never provided a detailed diagnosis, description or even figure of his material. At the same time however, Ameghino claimed knowledge over where Roth's material originated. Recent research conducted on the history of Niolamia suggests

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