n the Carboniferous Period, specifically in the Pennsylvanian subsystem, between 323 and 299 million years ago, a substantial change occurred around the planet: the climate increased strongly so that oceans growed up more than two hundred meters above the level existed immediately before this period.
The increase of the level of water allowed the developing and diversification of the first vascular plants, i.e., plants that alternate generations between the sexual gamete production (gametophyte) and the sexual stage (sporophyte).
Through this period would have arisen three types of flora beyond red, green, brown algae, and ditoms: these are ferns, lycopods and sphenopsids (flora 1), the gymnospears, or vascular plants able for producing naked
The increase of the level of water allowed the developing and diversification of the first vascular plants, i.e., plants that alternate generations between the sexual gamete production (gametophyte) and the sexual stage (sporophyte).
Through this period would have arisen three types of flora beyond red, green, brown algae, and ditoms: these are ferns, lycopods and sphenopsids (flora 1), the gymnospears, or vascular plants able for producing naked