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This Concept Map, created with IHMC CmapTools, has information related to: Animalia-lindsay-links and pics, Trilobitomorpha known only from Early fossils, Amphibians Has these characteristics Amphibians begin life in water, gills are replaced by lungs inadult form, lay eggs, three chamber hearts, internal skeletons that are made of Ossicles, Inverterbates Phylum Annelida, Crustacean some are motile, anterior which has 8 segments, Chordata has 9 subphylums, Inverterbates Phylum Cnidaria, Inverterbates Phylum Platyhelmintes, 9 subphylums 2 Lampreys, Arthropoda has Five subphylums, Inverterbates Phylum Mollusca, Reptiles are thick, scaly or plate-like skin; cold-blooded; embryo develops in the shell young born live or hatch from egg; four-chambered heart. example crocodile, Myriapoda have Simple eyes, decorative shells, principal body cavity is a blood-filled hemocoel also has a mantle: fold of the outer skin lining the shell, unsegmented bodies bilaterally symmetric examples are flatworms, amphilina foliiacea, Radially or biradially symmetric, tissue level of organization, bodies have two or three layers examples are Jellyfish, sea anemone Acropora palmate, Mollusca characterized by decorative shells, principal body cavity is a blood-filled hemocoel, Lobe-finned Fish Has these characteristics Have rounded fins, Bony Skeleton,, complete digestive system as well as bony or cartilaginous endoskeleton is usually present