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the world > the earth > structure of the earth > age or period > stratigraphic units > [adjective] > primary or Palaeozoic > Permo-carboniferous (3)
Permo-Carboniferous1874

Esp. of certain Palaeozoic formations in the Czech Republic and North America: forming a transition between the Carboniferous and Permian…

Anthracolithic1891

Of, relating to, or including the Permian and Carboniferous periods or systems considered together. Also as n.: the period or system comprising the…

Permo-Pennsylvanian1919

The late Pennsylvanian and early Permian systems or periods considered jointly.

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