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The influence of growth on the percentage of tubercle coverage of the manus of the propodus for species of Glypturus. A, outer side; B, inner side. Squares (red) = modern Glypturus acanthochirus; diamonds (blue) = G. panamacanalensis sp. nov. (Holo-Pleistocene of Panama); triangles (green) = G. sikesi sp. nov. (late Miocene of Florida, USA); cross (purple) = G. toulai (late Miocene of Panama); cross with vertical line (blue) = G. berryi (Oligocene of Mississippi, USA).
