carboniferous period

1. From 345 million to 280 million years ago (synset 115152259)
   is an instance of: geological period, period - a unit of geological time during which a system of rocks formed
   has:

   • 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
   is a part of: paleozoic, paleozoic era - from 544 million to about 230 million years ago
   same as: carboniferous

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