Lepidodendrales were the dominant plants, both in size and number, in Carboniferous coal swamps, and make up the majority of the plant biomass found in the coal reserves of the midwestern U.S.
(Lepidodendrales; were; the dominant plants, both in size and number, in Carboniferous coal swamps) (the plant biomass; found; L:in the coal reserves of the midwestern U.S.)
Lepidodendrales the plant biomass
were found
the dominant plants, both in size and number, in Carboniferous coal swamps
L:in the coal reserves of the midwestern U.S.