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Carboniferous period

   Also found in: Encyclopedia, Wikipedia, Hutchinson 0.01 sec.
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Noun1.Carboniferous period - from 345 million to 280 million years ago
Carboniferous
Paleozoic, Paleozoic era - from 544 million to about 230 million years ago
Pennsylvanian, Pennsylvanian period, Upper Carboniferous, Upper Carboniferous period - from 310 million to 280 million years ago; warm climate; swampy land
Lower Carboniferous, Lower Carboniferous period, Missippian period, Mississippian - from 345 million to 310 million years ago; increase of land areas; primitive ammonites; winged insects


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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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