@jayhawkrockdoc @gloriouslymuddy up there wit the trace fossils that let us know dinosaurs swam https://t.co/6u9ZWtObBW
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RT @FrontEcolEvol: Mesosaurid swimming traces! They used tail and paddle-like feet for swimming, hands for stabilizing. https://t.co/fZGnrF…
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Mesosaurid swimming traces! They used tail and paddle-like feet for swimming, hands for stabilizing. https://t.co/fZGnrFrM3k #FossilFriday https://t.co/VGaUOM8X3E
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RT @iamscicomm: THESE are fossilized mesosaurid tracks that can tell us how their makers moved >200mya! #FossilFriday https://t.co/lIndjDcm…