what living things lived in the cretaceous
Cretaceous Period: Life. No great extinction or burst of diversity separated the Cretaceous from the Jurassic Period that had preceded it. In some ways, things went on as they had. Dinosaurs both great and small moved through forests of ferns, cycads, and conifers. Ammonites, belemnites, other molluscs, and fish were hunted by great marine reptiles, and pterosaurs and birds flapped and soared in the air above.