Which group of land plants formed the first forests on earth?

Sorry just got this on Google hope it helps though.

The first land plants appeared around 470 million years ago, during the Ordovician period, when life was diversifying rapidly. They were non-vascular plants, like mosses and liverworts, that didn't have deep roots. About 35 million years later, ice sheets briefly covered much of the planet and a mass extinction ensued.

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explanation:

no i don't feel that humans have oversubscribed some medications