Cagle, 1954a
Northern black-knobbed map turtle
Recognition
One of the two subspecies of Graptemys nigrinoda, the black-knobbed map turtle. For a description, see the Geographic Variation section of this species.
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Cagle, 1954a
Northern black-knobbed map turtle
Recognition
One of the two subspecies of Graptemys nigrinoda, the black-knobbed map turtle. For a description, see the Geographic Variation section of this species.
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