A forest just upland from a lakeshore, Yixian Formation, 123 million years ago. In the foreground trunks of Pityocladus and Elatocladus are fallen. Cladophlebis is the upright stem and foliage in the foreground, far right. Liaoningocladus is next, then 3 Pityocladus trunks from right center to far left. In the background canopy we see Cladophlebis tree ferns and a diverse plant community. When trees fell due to erosion, storms, wildfire, or natural mortality, they provided a unique habitat, as we shall see in the next post.