Photos: Introductory Page: Melanie Stiassny: courtesy of AMNH, Denis Finnin; It All Began in the Oceans: Mark Siddall: courtesy of AMNH, Denis Finnin; Diversity of Life on Earth: Blue-green alga: courtesy of MIT, Department of Biology, Claire Ting, Giant kelp: courtesy of NOAA, Extreme microbe: courtesy of Universitaet Regensburg, Lehrstuhl Fuer Mikrobiologie, Karl O. Stetter, Tubeworm: courtesy of Pennsylvania State University, Charles Fisher, Spiny lobster: courtesy of Smithsonian Institution, M.G. Harasewych, Red mangrove: courtesy of OAR, National Undersea Research Program, Fungus: courtesy of Steve Newell, Diatom: courtesy of University of Michigan, M.J. Wynne, White marlin: courtesy of Food and Agriculture Organization of the United Nations; A Whale of a Tale: Blue whale: courtesy of AMNH, Denis Finnin; Illustrations: Jim Steck

Photos: (A special thanks to the California Academy of Sciences for their generous photo contribution); Introductory page American robin, Asian multicolored ladybird beetle, crocodile skink, Jeffery pine, long-tailed salamander, red lionfish, robust lancetooth, smooth flower coral, Salmonella enteriditis: refer to Organism Pages credits below; Joel Cracraft: courtesy of Joel Cracraft, AMNH Cladogram page DNA: courtesy of Denis Finnin, AMNH, The Genomic Revolution Exhibit animals: AMNH, spectrum of life in Hall of Biodiversity; Bilateria: formosan subterranean termite: courtesy of Scott Bauer, Agricultural Research Service; vertebrates, tetrapods, sauropsids, diapsids: AMNH, Hall of Vertebrate Origins; How to Read a Cladogram page: fruit photos excluding watermelon: AMNH; watermelon: courtesy of Ken Hammond, U.S. Department of Agriculture; Organism pages: True Bacteria: Escherichia coli: courtesy of Michael Elowitz Nodularia: Hans Paerl, author. Licensed for use, ASM MicrobeLibrary; Salmonella enteriditis: courtesy of U.S. Department of Agriculture; Staphylococcus: courtesy of Louis de Vos, BIODIC; Protoctists: Acetabularia, Amoeba proteus, Navicula, Paramecium, Tetrahymena pyriformis: courtesy of Louis de Vos, BIODIC Macrocystis; pyrifera: courtesy of Gary McCarthy, underwater-photos; Peridinium gatunese: courtesy of Susan Carty; Green plants: American rockbrake: courtesy of Larry Blakely, California Academy of Sciences; boojum tree: courtesy of Jules Strauss, California Academy of Sciences; cassava plant: courtesy of Roger Harris, Jungle Photos; Jeffrey pine: courtesy of Robert Potts, California Academy of Sciences; rosy periwinkle: courtesy of James A. Manhart; yellow starthistle: courtesy of Peggy Greb, Agricultural Research Service; Fungi: giant puffball, hygroscopic earthstar, the sickener, turkey tails, woolly chanterelle: Br. Alfred Brousseau, Saint Mary's College, California Academy of Sciences; jelly bellies, witch's Butter: courtesy of Dr. Robert Thomas and Margaret Orr, California Academy of Sciences; penicillium: courtesy of Center for Drug Evaluation and Research, FDA; Cnidarians: California cup coral: courtesy of Gerald and Buff Corsi, California Academy of Sciences; eggyolk jellyfish: courtesy of Garry McCarthy, underwater-photos; smooth flower coral, gorgonian coral: AMNH, spectrum of life in Hall of Biodiversity; portuguese man-of-war: courtesy of Dr. Thomas M. Scott, Florida Geological Survey; swimming anemone, tube anemone: courtesy of Garry McCarthy, California Academy of Sciences; symmetrical brain coral: courtesy of Eugene Weber, California Academy of Sciences; Mollusks: cuttlefish, chambered nautilus: AMNH, spectrum of life in Hall of Biodiversity; greater blue-ringed octopus: courtesy of Roy Caldwell; opalescent inshore squid, purple ring top snail, spanish shawl nudibranch: courtesy of Garry McCarthy, underwater photos; robust lancetooth: courtesy of Gerald and Buff Corsi, California Academy of Sciences; Pacific pearl oyster: courtesy of AMNH Department of Library Services, #K15574; Arthropods: Asian multicolored ladybird beetle, formosan subterranean termite, leaf-cutting ant, Mediterranean fruit fly, mustached mud bee, varroa mite: courtesy of Scott Bauer, Agricultural Research Service; owl butterfly, white-tailed spider: AMNH; pseudoscorpion: courtesy of Dr. Antonio J. Ferreira, California Academy of Sciences; Mexican redknee tarantula, sally lightfoot crab, ten-spot skimmer dragonfly: courtesy of Gerald and Buff Corsi, California Academy of Sciences; yellow fever mosquito: courtesy of Agricultural Research Service; Echinoderms: blood star, sand dollar, sea bat: courtesy of Gerald and Buff Corsi, California Academy of Sciences; slate pencil urchin: courtesy of Eugene Weber, California Academy of Sciences; sunflower seastar: courtesy of Sherry Ballard, California Academy of Sciences; Ray-finned fish: electric eel: courtesy of Alan Hill, fishbase; french angelfish: courtesy of Eugene Weber, California Academy of Sciences; Pacific seahorse, red lionfish: courtesy of Gerald and Buff Corsi, California Academy of Sciences; radial firefish: courtesy of H. Vannoy Davis, California Academy of Sciences; Amphibia: American toad, blue poison frog, long-tailed salamander, red spotted newt, white's treefrog: courtesy of John White, California Academy of Sciences; goliath frog: AMNH, Hall of Reptiles; hellbender: courtesy of Brad Moon, California Academy of Sciences; Mammals: caracal, giant panda, giraffe, green acouchi, warthog: courtesy of John White, California Academy of Sciences; aye-aye: AMNH, Hall of Biodiversity; human: AMNH; orca: courtesy of AMNH Department of Library Services, #1513; Turtles & Tortoises: aladabra tortoise, map turtle: courtesy of John White, California Academy of Sciences; Indian star tortoise, radiated tortoise: AMNH, spectrum of life in Hall of Biodiversity; leatherback sea turtle: courtesy of AMNH Department of Library Services, #1927; Lizards & Snakes: corn snake, crocodile skink, Eastern worm snake, Northern redbelly snake: courtesy of John White, California Academy of Sciences; Egyptian spiny-tailed lizard: courtesy of AMNH Department of Library Services, #K11268; king cobra: courtesy of Duncan McCrae Herpafauna Kings; alligator lizard: courtesy of AMNH Department of Library Services, #K11592; Komodo dragon: courtesy of Gerald and Buff Corsi, California Academy of Sciences; tusked chameleon: California Academy of Sciences; Birds & Crocodilians: American crocodile: courtesy of Gerald and Buff Corsi, California Academy of Sciences; American robin, Morelet's crocodile, Schneider's dwarf caiman: courtesy of John White, California Academy of Sciences; California condor: courtesy of David Clendenen, U.S. Fish and Wildlife Service; emu: courtesy of Larry Rana, U.S. Department of Agriculture; greater bird of paradise: courtesy of AMNH Department of Library Services, #pk18; snowy owl: courtesy of AMNH Department of Library Services, #pk372; whooping crane: courtesy of Gloria Hopkins