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History of Fish – Biology

By |2018-04-09T23:39:25+00:00May 26th, 2017|Biology|

History of fish: it looks like a severed tentacle but it's a lamprey. About 510 million years ago, in the Cambrian period, some of the worms on Earth evolved into the earliest fish. Fish were different from worms because they had spinal cords, nerves running all along their backs that carried messages to [...]