Utilisateur
Endoderm
Mesoderm
Ectoderm
Sponges
All other animals
Comb jellies
Class Hydrozoa
Hydra,portugeses-man-of-war
Scyphozoa
Jellies
Anthozoa
Corals and sea animals
Cubozoa
Box jellies
Turbellaria
Cestoda
Trematoda
"Flukes"
First blastophore is the mouth
Gastropoda
Snails, slugs, conchs
Polyplacophora
Chitins
Bivalvia
Clams
Cephalopoda
Squid, octopus, nautilus
Oligichaetea
Earthworm
Polychaetea
Sandworms, feather dusters
Hirudinea
Leeches produce anti-coagulant
Molting the outer cuticle
Roundworms
Reproduction
Chelicerates
Horseshoe crab and arachnids
Crustacea
Lobster, shrimp, crayfish, and crabs
Insects and Relatives
Insects
Complete: Has larvae after the egg stage.
Incomplete: Has nymphs after the egg stage.
First blastopore to become the anus
Pentahedral
Ophiuroidea
Brittle stars
Echinoidea
Sea urchins
Holothuroidea
Sea cucumbers
Crinoidea
Sea lilies
Asteroidea
Sea stars
Pharyngeal gill slits
Borsal, hollow nerve cord
Notochord
Post anal tail
Cephalochordata
Lancelets
Urochordata
Tunicates
Vertebrata
Vertebrates
Agnatha
Chondrichyes
Cartilaginous fish, sharks, skates, rays
Osteicthyes
Boney fish, clownfish, seahorse
Amphibia
Tetrapods, 3-chambered hearts
Gnathostomota
Reptiles and birds
Mammalia
Orangutans, zebras, giraffes, bats, whales