Carboniferous coal was produced by bark-bearing ... Over millions of years, the organic deposits of this plant debris formed the world's first extensive coal deposits—coal that humans are ...

This find contributes to the understanding of plant evolution during the Carboniferous Period. Acitheca machadoi is notable for preserving sporangia—the plant's reproductive organs—in three ...

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 ...

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 ...

Carboniferous plants illustrated prominently in the first panel include a lycopod and a sphenopsid species. Animals include trilobites, aquatic snails, and a cartilaginous fish in the water below and ...