Researcher: Transitions between land, sea, and freshwater were more frequent than we thought, and the transitions were not always land-to-freshwater or freshwater-to-marine. [Once they were really big, they could take over what they wanted to.]
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Researcher: Transitions between land, sea, and freshwater were more frequent than we thought, and the transitions were not always land-to-freshwater or freshwater-to-marine. [Once they were really big, they could take over what they wanted to.]