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The issue may sound trivial, but it has important implications for our understanding of pterosaurs. If they float awkwardly, this would limit their ability to rest on water after long flights or after diving, and suggest they would be forced to spend more time on the wing when over the open ocean (or large lakes). We also have tracks attributed to pterosaurs that are swimming or wading in shallow water, and so it would be useful to confirm if this matches the expected posture. But how exactly do you float a 100 million year old animal known mostly from fossil bones?