DINOSAURS LIVED on the Earth for nearly 150 million years. and it is not surprising that their world changed substantially during this time. Continents, at first just one great landmass, gradually drifted apart until they resembled the modern arrangement that we are familiar with. This meant that the climate changed as well, and both these factors influenced the types of plants that grew. These changes happened slowly over millions of years and animals adapted accordingly. At the beginning of the dinosaur age, low shrubby fern-like plants dominated the landscape. Then came a time when huge coniferous forests and groves of cycads flourished.Later on, the biggest change of all happened when the first flowering plants began to appear. Many plants and flowers that the dinosaurs may have eaten can still be seen growing today