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BI338 Invertebrate Zoology B.K.Penney PHYLUM TABLE COMMON NAME SCIENTIFIC NAME KEY Sponges Jellies Anemones Flatworms Roundworms Squid Slug, Snail Clam Worm Bugs Starfish Urchins Vertebrates Etc. Porifera Cnidaria Platyhelminthes Nematoda Rotifera Mollusca Annelida Arthropoda Echinodermata Chordata FEATURES SIZE NICHE HABITAT SYMMETRY SKELETON SEGMENT Order of magnitude Suspension Fresh Asymmetric Hydrostat Y Parasite Marine Radial eXoN Macrofeeder Terrestrial Bilateral eNdoDeposit SCIENTIFIC NAME KEY TISSUE LAYERS 1 2 3 GUT Blind Simple Complex BODY SPACE Acoel Pseudocoel Coelom GROUP CLEAVAGE Protostome Deuterostome Spiral Radial Porifera Cnidaria Platyhelminthes Nematoda Rotifera Mollusca Annelida Arthropoda Echinodermata Chordata From Brusca and Brusca, Appendix B, with modifications BLASTOPORE FATE Mouth Anus Other COELOM FORMATN Schizocoel Enterocoel EMBRYO REGULATION Mosaic Regulative