Labels:text | screenshot | font OCR: CARBONIFEROUS PERIOD 362-290 MYA During this period, swamp forests flourished. Their remains later formed layers of coal-bearing rock. A variety of amphibians (animals that can live on land and in water) crawled beneath giant club mosses, horsetails, and tree ferns. Primitive lizard-like reptiles (animals that have waterproof skin and lay eggs) appeared for the first time.
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