1. The Choanoflagellates: Heterotrophic Nanoflagellates and Sister Group of the Metazoa N. King, S.L. Young, M. Abedin, M. Carr, and B.S.C. Leadbeater 2. Dictyostelium discoideum: The Social Ameba P. Gaudet, P. Fey, and R. Chisholm 3. The Moss Physcomitrella patens: A Novel Model System for Plant Development and Genomic Studies D.J. Cove, P.-F. Perroud, A.J. Charron, S.F. McDaniel, A. Khandelwal, and R.S. Quatrano 4. The Genus Antirrhinum (Snapdragon): A Flowering Plant Model for Evolution and Development A. Hudson, J. Critchley, and Y. Erasmus 5. Tomato (Solanum lycopersicum): A Model Fruit-bearing Crop S. Kimura and N. Sinha 6. The Demosponge Amphimedon queenslandica: Reconstructing the Ancestral Metazoan Genome and Deciphering the Origin of Animal Multicellularity B.M. Degnan, M. Adamska, A. Craigie, S.M. Degnan, B. Fahey, M. Gauthier, J.N.A. Hooper, C. Larroux, S.P. Leys, E. Lovas, and G.S. Richards 7. Comb Jellies (Ctenophora): A Model for Basal Metazoan Evolution and Development K. Pang and M.Q. Martindale 8. Planarians: A Versatile and Powerful Model System for Molecular Studies of Regeneration, Adult Stem Cell Regulation, Aging, and Behavior N.J. Oviedo, C.L. Nicolas, D.S. Adams, and M. Levin 9. The Snail Ilyanassa: A Reemerging Model for Studies in Development M. Gharbiah, J. Cooley, E.M. Leise, A. Nakamoto, J.S. Rabinowitz, J.D. Lambert, and L.M. Nagy 10. Helobdella (Leech): A Model for Developmental Studies D.A. Weisblat and D.-H. Kuo 11. Pristionchus pacificus: A Genetic Model System for the Study of Evolutionary Developmental Biology and the Evolution of Complex Life-history Traits R. Rae, B. Schlager, and R.J. Sommer 12. The African Butterfly Bicyclus anyana: A Model for Evolutionary Genetics and Evolutionary Developmental Biology P.M. Brakefield, P. Beldade, and B.J. Zwaan 13. The Two-spotted Cricket Gryllus bimaculatus: An Emerging Model for Developmental and Regeneration Studies T. Mito and S. Noji 14. The American Wandering Spider Cupiennius salei: A Model for Behavioral, Evolutionary, and Developmental Studies N.-M. Prpic, M. Schoppmeier, and W.G.M. Damen 15. The Crustacean Parhyale hawaiensis: A New Model for Anthropod Development E.J. Rehm, R.L. Hannibal, R.C. Chaw, M.A. Vargas-Vila, and N.H. Patel 16. The Sea Lamprey Petromyzon marinus: A Model for Evolutionary and Developmental Biology N. Nikitina, M. Bronner-Fraser, and T. Sauka-Spengler 17. The Dogfish Scyliorhinus canicula: A Reference in Jawed Vertebrates M. Coolen, A. Menuet, D. Chassoux, C. Compagnucci, S. Henry, L. L e9;v e8;que, C. Da Silva, F. Gavory, S. Samain, P. Wincker, C. Thermes, Y. D'Aubenton-Carafa, I. Rodriguez-Moldes, G. Naylor, M. Depew, P. Sourdaine, and S. Mazan 18. The Genus Polypterus (Bichirs): A Fish Group Diverged at the Stem of Ray-finned Fishes (Actinopterygii) M. Takeuchi, M. Okabe, and S. Aizawa 19. Astyanax mexicanus, The Blind Mexican Cave Fish: A Model for Studies in Development and Morphology R. Borowsky 20. Darwin's Finches: Analysis of Beak Morphological Changes During Evolution A. Abzhanov 21. Japanese Quail: An Efficient Animal Model for the Production of Transgenic Avians G. Poynter, D. Huss, and R. Lansford 22. The Short-tailed Fruit Bat Carollia perspicillata: A Model for Studies in Reproduction and Development J.J. Rasweiler IV, C.J. Cretekos, and R.R. Behringer 23. Opossum (Monodelphis domestica): A Marsupial Developmental Model A.L. Keyte and K.K. Smith General Cautions Appendix Index