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Illustration of a Northern Map Turtle (Graptemys geographica) egg, 36.4 × 22.9 mm
Illustration © 2026 Lincoln Savi, Savi Made. Free to use with credit.

Graptemys geographica

  • 36.4 × 22.9 mm
  • Its colour follows its family (the eggs of all its relatives are alike); we haven't found a description of this species' own egg yet.
  • Clutch: 6–20 eggs
Breeds in Canada, United States

Elliptical, with a flexible, leathery shell.

Sources of information

Size
Average of 180 eggs: Vogt, Bulté & Iverson 2018, Graptemys geographica – Northern Map Turtle, Chelonian Research Monographs 5: 104.1–104.17.
Agrees with: Virginia Herpetological Society: Northern Map Turtle.
Description
Vogt, Bulté & Iverson 2018, Graptemys geographica – Northern Map Turtle, Chelonian Research Monographs 5: 104.1–104.17.
Shape
Drawn from the length and width, with the taper estimated from the typical eggs of its group (how these eggs are drawn).

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