1. deuterosomes
1.1. echinoderms
1.1.1. sea stars
1.1.2. sea urchins
1.1.3. sand dollars
1.2. chordates
1.2.1. cephalochordates
1.2.1.1. tunicates
1.2.1.2. lancelets
1.2.2. vertebrates
1.2.2.1. fish
1.2.2.1.1. jawless
1.2.2.1.2. gnathostomes
1.2.2.1.3. chondrichthytes
1.2.2.1.4. osteichthyes
1.2.2.1.5. tetrapods
1.2.2.2. amphibians
1.2.2.2.1. frogs
1.2.2.2.2. salamanders
1.2.2.3. reptiles
1.2.2.3.1. snakes
1.2.2.3.2. lizards
1.2.2.3.3. turtles
1.2.2.3.4. alligators
1.2.2.4. mammals
1.2.2.4.1. produce milk
1.2.2.4.2. have hair
1.2.2.4.3. monotremes(lay eggs)
1.2.2.4.4. marsupial
1.2.2.4.5. placental
2. lophotrochozoans
2.1. flatworms
2.1.1. planaria
2.1.2. tapeworms
2.2. annelids
2.2.1. earthworms
2.2.2. leeches
2.3. molluscs
2.3.1. bivalves
2.3.1.1. oysters
2.3.1.2. clams
2.3.2. gastropods
2.3.2.1. snails
2.3.3. cephalopods
2.3.3.1. octopus
2.3.3.2. squid
3. ecdysozoans (molting)
3.1. roundworms
3.1.1. nematods
3.2. arthopods
3.2.1. chelicerates
3.2.1.1. scorpions
3.2.1.2. ticks
3.2.1.3. spiders
3.2.1.4. mites
3.2.1.5. horseshoe crabs
3.2.2. myriapods
3.2.2.1. centipedes
3.2.2.2. millipedes
3.2.3. crustaceans
3.2.3.1. isopods
3.2.3.2. decapods
3.2.3.2.1. shrimp
3.2.3.2.2. crab
3.2.3.2.3. lobsters
3.2.3.2.4. crawfish
3.2.3.3. barnacles
3.2.4. hexapods (insects, 6 legs, 3 body parts)
3.2.4.1. odonates
3.2.4.1.1. dragonflies
3.2.4.2. coleopterans
3.2.4.2.1. beetles
3.2.4.3. hymenopterans
3.2.4.3.1. bees
3.2.4.3.2. wasps
3.2.4.3.3. ants
3.2.4.4. dipterans
3.2.4.4.1. flies
3.2.4.4.2. mosquitoes
3.2.4.5. lepidopterans
3.2.4.5.1. butterflies
3.2.4.5.2. moths
3.2.4.6. orthopterans
3.2.4.6.1. grasshoppers
3.2.4.6.2. crickets
3.2.4.7. hemipterans
3.2.4.7.1. fleas
3.2.4.7.2. lice
3.2.4.7.3. termites