Pennsylvanian Period

(Pronunciation -تلفظ سنیۓ ) US:

Slow

Normal

Noun: Pennsylvanian Period

1. Pennsylvanian Period [ Synonyms: pennsylvanian, upper carboniferous, upper carboniferous period]
From 310 million to 280 million years ago; warm climate; swampy land

Pennsylvanian Period is a part of:

carboniferous, carboniferous period

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