Protostomes order list

Annelida [Phylum]
    Polychaeta [Class]
        Amphinomida [Order]
        Capitellida
        Chaetopterida
        Cirratulida
        Cossurida
        Ctenodrilida
        Dinophilida
        Eunicida
        Flabelligerida
        Magelonida
        Nerillida
        Opheliida
        Orbiniida
        Oweniida
        Phyllodocida
        Poeobiida
        Polygordiida
        Protodrilida
        Psammodrilida
        Sabellariida
        Sabellida
        Spintherida
        Spionida
        Sternaspida
        Terebellida

    Myzostomida [Class]
        Pharyngidea [Order]
        Proboscidea

    Oligochaeta [Class]
        Haplotaxida [Order]
        Lumbriculida
        Moniligastrida
        Opisthopora

    Hirudinea [Class]
        Arhynchobdellae [Order]
        Rhynchobdellida

    Pogonophora [Class]
        Athecanephria [Order]
        Thecanephria

Vestimentifera [Phylum]
        Basibranchia [Order]
        Riftiidae

Sipuncula [Phylum]
        Aspidosiphoniformes [Order]
        Golfingiaformes
        Phascolosomatiformes
        Sipunculiformes

Echiura [Phylum]
        Bonellioinea [Order]
        Echiuroinea
        Heteromyota
        Xenopneusta

Onychophora [Phylum]
        No order designations

Tardigrada [Phylum]
        Arthrotardigrada [Order]
        Echiniscoidea
        Parachela
        Apochela
        Mesotardigrada

Arthropoda [Phylum]
  Crustacea [Subphylum]
    Remipedia [Class]
        Nectiopoda [Order]

    Cephalocarida [Class]
        Brachypoda [Order]

    Branchiopoda [Class]
        Anostraca [Order]
        Notostraca
        Conchostraca
        Cladocera

    Malacostraca [Class]
      Phyllocarida [Subclass]
        Leptostraca [Order]

      Eumalacostraca [Subclass]
        Stomatopoda [Order]
        Bathynellacea
        Anaspidacea
        Euphausiacea
        Amphionidacea
        Decapoda
        Mysida
        Lophograstrida
        Cumacea
        Tanaidacea
        Mictacea
        Spelaeogriphacea
        Thermosbaenacea
        Isopoda
        Amphipoda

    Maxillopoda [Class]
      Thecostraca [Subclass]
        Acrothoracica [Order]
        Ascothoracica
        Rhizocephala
        Thoracica

      Tantulocarida [Subclass]
        No order designations

      Branchiura [Subclass]
        Arguloida [Order]

      Mystacocarida [Subclass]
        No order designations

      Copepoda [Subclass]
        Calanoida [Order]
        Cyclopoida
        Gelyelloida
        Harpacticoida
        Misophrioida
        Monstrilloida
        Mormonilloida
        Platycopioida
        Siphonostomatoida

      Ostracoda [Subclass]
        Myodocopida [Order]
        Palaeocopida
        Podocopida

    Pentastomida [Class]
        Cephalobaenida [Order]
        Porocephalida

  Cheliceriformes [Subphylum]
    Pycnogonida [Class]
        Pantopoda [Order]

    Chelicerata [Class]
      Merostomata [Subclass]
        Xiphosura [Order]

      Arachnida [Subclass]
        Acari [Order]
        Amblypygi
        Araneae
        Opiliones
        Palpigradi
        Pseudoscorpiones
        Ricinulei
        Schizomida
        Scorpionida
        Solpugida
        Uropygi

  Uniramia [Subphylum]
    Myriapoda [Class]
      Chilopoda [Subclass]
        Craterostigmomophora [Order]
        Geophilomorpha
        Lithobiomorpha
        Scolopendromorpha
        Scutigeromorpha

      Diplopoda [Subclass]
        Callipodida [Order]
        Chordeumatida
        Glomerida
        Glomeridesmida
        Julida
        Platydesmida
        Polydesmida
        Polyxenida
        Polyzoniida
        Siphoniulida
        Siphonophorida
        Sphaerotheriida
        Spirobolida
        Spirostreptida
        Stemmiulida

      Symphyla [Subclass]
        Symphyla [Order]

      Pauropoda [Subclass]
        Hexamerocerata [Order]
        Tetramerocerata

Mollusca [Phylum]
    Aplacophora [Class]
        Cavibelonia [Order]
        Neomeniomorpha
        Pholidoskepia

    Monoplacophora [Class]
        Tryblidioidea [Order]

    Polyplacophora [Class]
        Acanthochitonida [Order]
        Ischnochitonida
        Lepidopleurida

    Gastropoda [Class]
      Opisthobranchia [Subclass]
        Acochlidioidea [Order]
        Anaspidea
        Cephalaspidea
        Gymnosomata
        Notaspidea
        Nudibranchia
        Runcinoidea
        Sacoglossa
        Thecosomata

      Pulmonata [Subclass]
        Actophila [Order]
        Basommatophora
        Stylommatophora
        Systellommatophora
        Patellogastropoda
        Vetigastropoda [Superorder]
        Haliotoidea
        Lepetodriloidea
        Vetigastropoda
        Cocculiniformia
        Neritopsina
        Caenogastropoda

    Bivalvia [Class]
        Arcoida [Order]
        Hippuritoida
        Limoida
        Myoida
        Mytiloida
        Nuculoida
        Ostreoida
        Pholadomyoida
        Pterioida
        Solemyoida
        Trigonioida
        Unionoida
        Veneroida

    Scaphopoda [Class]
        Dentaliida [Order]
        Gadilida

    Cephalopoda [Class]
        Nautilida [Order]
        Octopoda
        Sepioidea
        Spirulida
        Teuthoidea
        Vampyromorphida

Phoronida [Phylum]
        No order designations

Ectoprocta [Phylum]
    Phylactolaemata [Class]
        No order designations

    Stenolaemata [Class]
        Cyclostomata [Order]

    Gymnolaemata [Class]
        Cheilostomatida [Order]
        Ctenostomata

Brachiopoda [Phylum]
    Inarticulata [Class]
        Acrotretida [Order]
        Lingulida

    Articulata [Class]
        Rhynchonellida [Order]
        Terebratulida
        Thecideidina