Illustration 2 (IMAGE) Aarhus University Caption The landscape in Europe was dominated by a variety of different vegetational systems. In this picture it is open wood which lets enough sunlight through the foliage to support bushes, small trees and grasses. Credit Brennan Stokkerman Usage Restrictions Only to be used covering this story. License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.