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Carboniferous period

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Carboniferous period

Period of geological time roughly 362.5 to 290 million years ago, the fifth period of the Palaeozoic Era. In the USA it is divided into two periods: the Mississippian (lower) and the Pennsylvanian (upper).

Typical of the lower-Carboniferous rocks are shallow-water limestones, while upper-Carboniferous rocks have delta deposits with coal (hence the name). Amphibians were abundant, and reptiles evolved during this period.



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? Mentioned in ? References in periodicals archive
 
The evolution of large-bodied arthropods occurred slowly but steadily as atmospheric oxygen gradually increased during the 60-million-year-long Carboniferous period.
Changes in the air: variations in atmospheric oxygen have affected ... by Perkins, Sid / Science News
Entomologists say these invertebrates (backboneless animals) were the first creatures to fly, dating from the Carboniferous period about 360 million years ago.
How Insects Fly by GUYNUP, SHARON / Science World
It has been over 100 million years since the giant coniferous forests that evolved in the Carboniferous Period began giving ground to the upstart flower-bearing species that now dominate the world's diversity of trees.
Meet the new royal family by Bronaugh, Whit / American Forests
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