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SCORPION-xisa [38]
3 years ago
6

Research the group sarcopterygii and explain why all terrestrial vertebrates from cows to humans are included in this group whic

h describes fish?
Biology
1 answer:
irina1246 [14]3 years ago
8 0

Even though sarcopterygians are fishes, they are the common ancestor of all the tetrapodes (we humans included). Sarcopterygians have lobe-fins which are muscular fins with a single bone that articulates with the rest of the body. Lobe-fins are basically limb precursors. In fact, every vertebrate have lobe-limbs that originated from the lobe-fins of the sarcopterygians, so in a very real sense er and all the vertebrates alive are descendants of the sarcopterygians <span>fishes that lived in the Devonian 419.2 million years ago.</span>

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Hope I helped (:

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