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2019-12-17 09:21:22.0 [tstevens]
insert Definition (id: null
text: The Carboniferous is a geologic period and system that spans 60 million years
from the end of the Devonian Period 358.9 million years ago (Mya), to the beginning
of the Permian Period, 298.9 Mya. Terrestrial animal life was well established by
the Carboniferous period. Amphibians were the dominant land vertebrates, of which
one branch would eventually evolve into amniotes, the first solely terrestrial vertebrates.
Arthropods were also very common, and many (such as Meganeura) were much larger than
those of today. Vast swaths of forest covered the land, which would eventually be
laid down and become the coal beds characteristic of the Carboniferous stratigraphy
evident today. The atmospheric content of oxygen also reached its highest levels in
geological history during the period, 35%, compared with 21% today, allowing terrestrial
invertebrates to evolve to great size.
language code: en);
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The Carboniferous is a geologic period and system that spans 60 million years from
the end of the Devonian Period 358.9 million years ago (Mya), to the beginning of
the Permian Period, 298.9 Mya. Terrestrial animal life was well established by the
Carboniferous period. Amphibians were the dominant land vertebrates, of which one
branch would eventually evolve into amniotes, the first solely terrestrial vertebrates.
Arthropods were also very common, and many (such as Meganeura) were much larger than
those of today. Vast swaths of forest covered the land, which would eventually be
laid down and become the coal beds characteristic of the Carboniferous stratigraphy
evident today. The atmospheric content of oxygen also reached its highest levels in
geological history during the period, 35%, compared with 21% today, allowing terrestrial
invertebrates to evolve to great size.
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