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A, Quetzalcoatlus northropi (10–11 m wingspan); B, Pteranodon (7 m wingspan); C, Pterodactylus (45 cm wingspan). Note that each bears a large deltopectoral crest (dp) and robust extremities. Scale bars represent 100 mm (A and B) and 10 mm (C). A and C, from Witton et al. [121]; B, modified from Bennett [12].
