? Karl Sanders - Impalement and Crucifixion of the Last Remnants of the Pre-Human Serpent Volk | Main | Gary Numan - My Name Is Ruin ?

August 06, 2017

Hidden Secrets of the Ordovician Age

"This HD documentary explains how advanced forms of live began in ancient Australia's history 500 million years ago. Australian biologist Richard Smith travels across Australia to study the Ordovician fossil record. Life continued to flourish during the Ordovician as it did in the earlier Cambrian period, although the end of the period was marked by the Ordovician–Silurian extinction event. Invertebrates, namely molluscs and arthropods, dominated the oceans. Fish, the world's first true vertebrates, continued to evolve, and those with jaws may have first appeared late in the period. Life had yet to diversify on land. About 100 times as many meteorites struck the Earth during the Ordovician compared with today."

Posted by Ghost of a flea at August 6, 2017 10:29 AM