During this period the first reptiles came into existence (and, after 150 million years, evolved into what we know as dinosaurs), great layers of organic matter began collection in the swamp (later to become coal) and the erosion of the mountains continued to deposit sediment into the basin.
(the first reptiles; came; into existence; T:During this period) (the erosion of the mountains; continued; ) (the erosion of the mountains; to deposit; sediment; into the basin) (we; know; as dinosaurs) (great layers of organic matter; began; collection; L:in the swamp; later to become coal; T:During this period the first reptiles came into existence (and, after 150 million years, evolved into what we know as dinosaurs)
the first reptiles the erosion of the mountains the erosion of the mountains we great layers of organic matter
came continued to deposit know began
into existence T:During this period
sediment into the basin
as dinosaurs
collection L:in the swamp later to become coal T:During this period the first reptiles came into existence (and, after 150 million years, evolved into what we know as dinosaurs