HSEA 010 Lecture 3: Devonian Period: characteristics, geology, fauna, flora
28 Jul 2020
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Document Summary
The devonian period was one of the five subdivisions of the paleozoic era. It lasted about 56 million years, in which the planet underwent a large number of changes at the geological level, but especially in biodiversity. During this period, there was extensive development of certain groups of animals, especially those living in marine environments. There were also important changes in terrestrial habitats, with large plants and the first land animals appearing. Despite being a period in which life became so diversified, the devonian also has the dubious reputation of being the time in which a large number of animal species became extinct (80%). During this period, a mass extinction event occurred that permanently disappeared many species from the face of the earth. The devonian period lasted approximately 56 million years. It started about 416 million years ago and ended about 359 million years ago. During the devonian period, existing animal groups experienced incredible evolution and diversification.
