Invertebrates
Child Hierarchical Categories
Acanthocephala (Spiny-headed Worms)
Annelida (Segmented Worms)
Arachnida (Spiders and Scorpions)
Brachiopoda (Lamp Shells)
Bryozoa (Moss Animals)
Chaetognatha (Arrow Worms)
Cnidaria (Jellyfish and Corals)
Crustacea (Crabs and Lobsters)
Ctenophora (Comb Jellies)
Cycliophora (Symbion)
Echinodermata (Starfish and Sea Urchins)
Echiura (Spoon Worms)
Freshwater Invertebrates
Gnathostomulida (Jaw Worms)
Hemichordata (Acorn Worms)
Insecta (Insects)
Kinorhyncha (Mud Dragons)
Loricifera (Brush-heads)
Marine Invertebrates
Micrognathozoa (Tiny-jaws)
Mollusca (Snails and Clams)
Nematoda (Roundworms)
Nematomorpha (Horsehair Worms)
Onychophora (Velvet Worms)
Phoronida (Horseshoe Worms)
Platyhelminthes (Flatworms)
Pogonophora (Beard Worms)
Porifera (Sponges)
Priapulida (Penis Worms)
Rotifera (Rotifers)
Sipuncula (Peanut Worms)
Tardigrada (Water Bears)
Terrestrial Invertebrates