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Devonian Period – Gondwana, ferns, lungfish

By |2018-04-21T11:56:37+00:00June 24th, 2017|Biology, Geology|

Coelocanth Four hundred and sixteen million years ago, when the Silurian period ended and the Devonian period began, most of the land on Earth was clumped together into a supercontinent called Gondwana. At this time the only creatures that lived on land were small plants like moss and lichens, mushrooms, and other fungi, [...]

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 [...]