TY - BOOK AU - Pechenik,Jan A. TI - Biology of the invertebrates / SN - 0070122040 U1 - 592 21 PY - 2000/// CY - Boston PB - McGraw-Hill KW - Invertebrates N1 - Includes bibliographical references; 1 Environmental Considerations 2 Invertebrate Classification 3 The Protozoans 4 The Poriferans and Placozoans 5 Introduction to the Hydrostatic Skeleton 6 The Cnidarians 7 The Ctenophores 8 The Platyhelminthes 9 Possible Flatworm Relatives: The Mesozoans 10 The Nemertines 11 The Rotifers and Acanthocephalans 12 The Molluscs 13 The Annelids and Sipunculans 14 The Arthropods 15 Two Phyla of Likely Arthropod Relatives: Tardigrades and Onychophorans 16 The Nematodes 17 Four Phyla of Likely Nematode Relatives: Nematomorpha, Priapulida, Kinorhyncha, and Loricifera 18 Five Phyla of Uncertain Affiliation: Myxozoa, Gnathostomulida, Gastrotricha, Xenoturbella bocki, Chaetognatha, and Cyliophora 19 The Lophophorates (Phoronids, Brachiopods, Bryozoans) and Entoprocts 20 The Echinoderms 21 The Hemichordates 22 The Nonvertebrate Chordates 23 Invertebrate Reproduction and Developmentā€”An Overview Glossary Index ER -