The Mother Fish

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Published 15 Mar 2009
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Evidence of reproduction by internal fertilization has been discovered in a large group of ancient jawed fi...
Evidence of reproduction by internal fertilization has been discovered in a large group of ancient jawed fish. Embryos discovered within fossils of these animals confirm that live birth in prehistoric times was much more widespread than previously thought. Watch the researchers talk about the fossils and techniques used to find them.
Categories: Science & Tech
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