The first significant evolutionary radiation of life on land occurred during the Devonian, as free-sporing land plants (pteridophytes) began to spread across dry land, forming extensive coal forests which covered the continents.

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Wikipedia contributors. (2024, August 11). Devonian. In Wikipedia, The Free Encyclopedia. Retrieved August 12, 2024, from https://en.wikipedia.org/w/index.php?title=Devonian&oldid=1239731325

Devonian (Wikipedia) The Devonian (/dɪˈvoʊni.ən, dɛ-/ də-VOH-nee-ən, deh-) is a geologic period and system of the Paleozoic era during the Phanerozoic eon, spanning 60.3 million years from the end of the preceding Silurian period at 419.2 million years ago (Ma), to the beginning of the succeeding Carboniferous period at 358.9 Ma. It is named after Devon, South West England, where rocks from this period were first studied.