Many of the biggest dinosaurs, such as some of the long-necked sauropods like Brachiosaurus, Titanosaurus, and Apatosaurus, would have eaten colossal amounts of vegetation.
So why do we find such a conspicuous absence of plants in rocks containing dinosaur fossils? Take for example the Morrison Formation in Montana, USA. Even though this Formation has yielded many dinosaur fossils, there is a startling scarcity of vegetation preserved. This phenomenon of ‘missing vegetation’ doesn’t just apply to dinosaurs. The Coconino Sandstone in the Grand Canyon has many animal track-ways, but it is almost devoid of plants. These rocks tell us something profound about earth history. They suggest that these deposits are not ecosystems buried over eons of time, otherwise we’d find more evidence of the plants that the animals ate. Instead, the evidence fits nicely with the biblical model of earth history, whereby these animals were transported and buried catastrophically, during Noah’s flood.