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Biology, 21.04.2020 00:24, pennygillbert
Ichthyosaurs were giant marine reptiles. Fossils indicate that they possessed dorsal fins and tails, as do fish, even though their closest relatives were terrestrial reptiles that had neither dorsal fins nor aquatic tails. The dorsal fins and tails of ichthyosaurs and fish are examples of:
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Ichthyosaurs were giant marine reptiles. Fossils indicate that they possessed dorsal fins and tails,...
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