3 min read The Carboniferous period, part of the late Paleozoic era ... Over millions of years, the organic deposits of this plant debris formed the world's first extensive coal deposits ...

Plants flourished even before dinosaurs roamed the planet. In the Carboniferous Period, 359 to 299 million years ago, plants grew in swampy, green bogs that over time became the coal deposits we use ...

the Carboniferous period saw a boost in atmospheric oxygen and vast quantities of carbon dioxide trapped in what eventually became Earth's coal deposits. Terrestrial plant and animal life ...

Once the dominant plant forms during the Carboniferous period 350 million years ago, today there are only 13,000 extant species. Week 3: Gymnosperms Next in our journey is the emergence of seed plants ...