With Ackerley the Acanthostega visit the early Triassic to the late Jurassic periods - 58 million years in which dinosaurs first appeared then grew in size and numbers to dominate on land in the air and in the shallows and depths of the oceans.
Discover facts fossils and scientific thoughts about
first dinosaurs
flying reptiles
mighty sea beasts
the first birds
This is Book 4 in the Evolution Series. See all Evolution books here.
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