|These are computer-generated images of fish that swam in a giant lake in the Kitakyushu area during the Early Cretaceous Era (about 120 million years ago).
|Before the Cretaceous Era, the rock mounds of Hiraodai Plateau are thought to have been sharp-edged, like the pillars of Akiyoshidai Plateau. Metamorphism by granite magma transformed the rock mounds into the limestones making their current shapes, which are said to resemble flocking sheep.
||Amber, fossilized “resin”, sometimes hold insects and other small animals. Such specimens are very well preserved and show a great deal of detail. The insect trapped in this piece of Baltic amber is a fungus gnat (Mycetophilidae), and is about 40 million years old.
||Dinosaurs lay eggs. Iguanodons warm eggs by the heat of decaying fern leaves.