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#devonian period #tetrapod evolution #fish to amphibian #water to land #tiktaalik #ichthyostega #vertebrate evolution #paleozoic era #fossils

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#fishapod #limb development #transitional form #vertebrate evolution

πŸŸβž‘οΈπŸ¦Žβž‘οΈπŸ’βž‘οΈπŸ§

#speciation #human evolution #evolutionary lineage #major transitions #vertebrate evolution

πŸŸβž‘οΈπŸ¦Žβž‘οΈπŸ’βž‘οΈπŸšΆβ€β™‚οΈ

#biological evolution #darwinism #natural selection #origin of species #life development #ape to man #vertebrate evolution

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#tetrapods #four limbs #vertebrate evolution #evolutionary biology #biology 4

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#vertebrate evolution #origin of species #fossil record #speciation