Reference work entry
During the process of ontogenetic development, some animals must undergo metamorphism. The young generally breathe with gills to be able to live in an aquatic environment, but the adults breathe with lungs to adapt to terrestrial conditions (Fig. 15). Few amphibian fossils have been found in China, but all have substantial scientific research and ornamental value. Amphibians first appeared in the late Devonian and flourished in the Carboniferous-Permian. Fossils of Rana basalticahave been found in the diatomite shale in Linqu, Shandong Province. This fossil frog has been well preserved, and the skin prints and bones are clearly identifiable. Many tadpole fossils have also been found. Abundant well-preserved fossils of amphibians have been discovered in the Jehol (Rehe) biota, and this discovery fills the gap in China’s Mesozoic Lissamphibia fossils and thus has facilitated the study of the early evolution and migration of amphibians in China. Signature species are Callobatrachus,...
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