Key to colors: DOMAIN, KINGDOM,Phylum,Subphylum,Class,Subclass,Order,Family
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ROOT (OVERVIEW) > EUKARYOTA > Opisthokonta > METAZOA > Eumetazoa > Bilateria >

Protostomia (Ch. 28)

• Spiralia
  • Lophotrochozoa
    • Mesozoa
      • Dicyemida - Rhombozoans
      • Orthonectida - Orthonectids
    • Platyhelminthes - Flatworms
    • Nemertea - Ribbon Worms
    • Annelida (28-IV) - Segmented Worms
      • Clitellata
        • Hirudinea - Leeches
        • Oligochaeta - Earthworms, Sludge Worms
      • Polychaeta - Sandworms, Bloodworms, Lugworm
        • Echiura - Spoonworms
        • Errantia
        • Sedentaria
      • Sipuncula - Peanut Worms
    • Phoronida - Horseshoe Worms
    • Brachiopoda - Lampshells
    • Mollusca (28-V) - Molluscs
      • Bivalvia - Bivalves
        • Anomalodesmata - Sandy Pandora, Cardiomya
        • Heteroconchia - Shipworms, Surf Clams, Wedge Shells, Razor Clams
        • Palaeoheterodonta - Sandshells, Pigtoes, Hickorynuts
        • Protobranchia - Nutclams, Yolidas, Awningclams
        • Pteriomorphia - Mussels, Oysters, Pearl Oysters, Scallops, Ark Shells
      • Gastropoda - Gastropods
        • Caenogastropoda - Mysterysnails, Conchs, Whelks, Cone Shells, Horn Shells, Turret Shells
        • Cocculiniformia
        • Heterobranchia - Land Snails, False Limpets, Rissos, Aeolises (Nudibranches), Sea Hares, "Bubbles"
        • Neritimorpha - Nerites
        • Patellogastropoda - Limpets
        • Vetigastropoda - Abalones, Top Shells, Turban Shells
      • Cephalopoda - Cephalopods
        • Nautiloidea - Nautiluses
        • Coleoidea
          • Decapodiformes - Squids, Cuttlefishes
          • Octopodiformes - Octopuses, Vampire Squids
      • Scaphopoda - Tusk Shells
      • Aplacophora
        • Caudofoveata
        • Solenogastres - Solenogasters
      • Monoplacophora
      • Polyplacophora - Chitons
    • Bryozoa - Bryozoans
    • Entoprocta - Entoprocts
    • Cycliophora - Symbion pandora
    • Gastrotricha - Gastrotrichs
    • Acanthocephala - Thorny-Headed Worms
  • Gnathifera
    • Rotifera - Rotifers
    • Gnathostomulida
    • Micrognathozoa
    • Chaetognatha - Arrow Worms
• Ecdysozoa
  • Nematoda - Roundworms
  • Nematomorpha - Horsehair Worms
  • Scalidophora
    • Kinorhyncha - Spiny-Headed Worms
    • Loricifera - Loriciferans
    • Priapulida - Priapulid Worms
  • Panarthropoda
    • Tardigrada - Tardigrades (Water Bears)
    • Onychophora - Velvet Worms
    • Arthropoda (Ch. 29) >>> (Arthropods)