Cretaceous Fossils Overview One-celled Organisms: Phylum Protozoa Sponges: Phylum Porifera Clams, Snails, and Squid: Phylum Mollusca, Class Gastropoda Clams, Snails, and Squid: Phylum Mollusca, Class Cephalopoda Clams, Snails, and Squid: Phylum Mollusca, Class Pelecypoda Corals and Jellyfish: Phylum Cnidaria Insects and Crustaceans: Phylum Arthropoda Lamp Shells: Phylum Brachiopoda Moss Animals: Phylum Bryozoa Segmented Worms: Phylum Annelida Starfish and Urchins: Phylum Echinodermata Vertebrates: Phylum Chordata Book traversal links for Cretaceous Fossils of the C&D Canal ‹ Fossil Identification Sheet Up Cretaceous Fossils Overview › Printer-friendly version