Ordovician Period – limestone and liverwort

By |2018-04-21T11:56:38-07:00June 24th, 2017|Geology|Comments Off on Ordovician Period – limestone and liverwort

The Ordovician period saw the evolution of the octopus At the end of the Cambrian period, about 488 million years ago, most of the plants and animals living on Earth [...]