A small fish crawling on stumpy limbs from a shrinking desert pond is an icon of can-do spirit, emblematic of a leading theory for the evolutionary transition between fish and amphibians. This theorized image of such a drastic adaptation to changing environmental conditions, however, may, itself, be evolving into a new picture.
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Cluster Centroids (Superclass Keywords)
Fish, Daeschler, Tiktaalik, Fins, Tetrapods, Fossils, Devonian, Fin, Laccognathus, Downs, Limbs, Hip, Romer, Shubin, Transitional, Euphanerops, Hind, Fishes, Fossil, Appendages, Sansom, Bergmanni, Animals, Boisvert, Weight-Bearing, Limb, Salamanders, Drexel, Forelimbs, Floodplains, Pelvic, Arctic, Hips, Anal, Retallack, Roseae, Species, Vertebrate, Placoderm, Land, Transition, Thomson, Pectoral, Tendons, Forces, Skeletal, Soils, Mudskipper, Holoptychius, Ancestors, …
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