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Organism
  Animalia
         [Metazoa]
      Annelida
            Polychaeta
                   [Lysareunicidae]
              Sedentaria
               Canalipalpata
                      [Archiannelida]
                            Spionidae
                                   [Polydoridae]
                                     Aciculaspio
                                             Aciculaspio anaximanderi
                                     Amphipolydora
                                     Anaspio
                                             Anaspio boreus
                                     Aonidella
                                             Aonidella cirrobranchiata
                                             Aonidella dayi
                                     Aonides
                                             Aonides californiensis
                                             Aonides glandulosa
                                             Aonides mayaguezensis
                                             Aonides oxycephala
                                             Aonides paucibranchiata
                                     Apoprionospio
                                             Apoprionospio dayi
                                                   [Prionospio dayi]
                                     Aquilaspio
                                             Aquilaspio sexoculata
                                     Atherospio
                                             Atherospio disticha
                                     Aurospio
                                             Aurospio dibranchiata
                                     Aurospiro
                                             Aurospira dibranchiata
                                     Australospio
                                             Australospio mokapu
                                     Boccardia
                                           [Neoboccardia]
                                           [Paraboccardia]
                                             Boccardia acus
                                             Boccardia basilaria
                                             Boccardia berkeleyorum
                                             Boccardia californica
                                             Boccardia chilensis
                                             Boccardia columbiana
                                             Boccardia galapagense
                                             Boccardia hamata
                                                   [Polydora hamata]
                                             Boccardia ligerica
                                             Boccardia ligni
                                             Boccardia natrix
                                             Boccardia polybranchia
                                             Boccardia proboscidea
                                             Boccardia pugettensis
                                             Boccardia redeki
                                             Boccardia tricuspa
                                             Boccardia uncata
                                     Boccardiella
                                             Boccardiella bihamata
                                             Boccardiella hamata
                                             Boccardiella ligerica
                                             Boccardiella occipitalis
                                     Carazziella
                                             Carazziella calafia
                                             Carazziella carrascoi
                                             Carazziella citrona
                                             Carazziella hirsutiseta
                                             Carazziella hobsonae
                                             Carazziella hymenobranchiata
                                             Carazziella patagonica
                                             Carazziella phillipensis
                                             Carazziella proberti
                                             Carazziella reishi
                                                   [Pseudopolydora reishi]
                                             Carazziella victoriensis
                                     Dipolydora
                                           [Leipoceras]
                                             Dipolydora akaina
                                             Dipolydora alborectalis
                                             Dipolydora anatentaculata
                                             Dipolydora armata
                                                   [Dipolydora rogeri]
                                             Dipolydora bidentata
                                             Dipolydora cardalia
                                             Dipolydora carunculata
                                             Dipolydora caulleryi
                                             Dipolydora coeca
                                             Dipolydora commensalis
                                             Dipolydora concharum
                                             Dipolydora giardi
                                             Dipolydora huelma
                                             Dipolydora quadrilobata
                                             Dipolydora saintjosephi
                                             Dipolydora socialis
                                             Dipolydora tridenticulata
                                             Dipolydora trilobata
                                     Dispio
                                             Dispio brachychaeta
                                             Dispio latilamella
                                             Dispio lenislamellata
                                             Dispio remanei
                                             Dispio uncinata
                                     Glandulospio
                                     Glyphochaeta
                                     Laonice
                                           [Aricideopsis]
                                           [Mandane]
                                           [Spionides]
                                             Laonice antarcticae
                                             Laonice appellofi
                                             Laonice bahusiensis
                                             Laonice brevicornis
                                                   [Aricidea alata]
                                             Laonice cirrata
                                             Laonice pugettensis
                                             Laonice sarsi
                                             Laonice weddellia
                                     Laubieriellus
                                     Lindaspio
                                             Lindaspio southwardorum
                                     Malacoceros
                                           [Colobranchus]
                                           [Uncinia]
                                             Malacoceros fuliginosus
                                                   [Spio fuliginosus]
                                             Malacoceros indicus
                                             Malacoceros reductus
                                             Malacoceros tetracerus
                                             Malacoceros tripartitus
                                             Malacoceros vanderhorsti
                                             Malacoceros vulgaris
                                     Marenzelleria
                                             Marenzelleria multibranchiata
                                             Marenzelleria viridis
                                                   [Scolecolepides viridis]
                                                   [Scolecolepis tenuis]
                                                   [Scolecolepis viridis]
                                             Marenzelleria wireni
                                     Mesospio
                                             Mesospio moorei
                                     Microspio
                                             Microspio granulata
                                             Microspio maculata
                                             Microspio mecznikowianus
                                             Microspio pigmentata
                                             Microspio theeli
                                     Minuspio
                                             Minuspio cirrifera
                                                   [Prionospio cirrifera]
                                                   [Prionospio delta]
                                                   [Prionospio multibranchiata]
                                                   [Prionospio patagonica]
                                             Minuspio cirrobranchiata
                                                   [Prionospio cirrobranchiata]
                                             Minuspio longibranchiata
                                                   [Prionospio longibranchiata]
                                     Morants
                                             Morants duplex
                                     Nerine
                                     Orthoprionospio
                                     Paraprionospio
                                             Paraprionospio alata
                                             Paraprionospio pinnata
                                             Paraprionospio tamaii
                                     Paraspio
                                     Polydora
                                           [Leucodore]
                                           [Leucodorum]
                                             Polydora aciculata
                                             Polydora aggregata
                                             Polydora alloporis
                                             Polydora anoculata
                                             Polydora armata
                                             Polydora barbilla
                                             Polydora bioccipitalis
                                             Polydora blakei
                                             Polydora brachycephala
                                             Polydora caeca
                                             Polydora cardalia
                                             Polydora caulleryi
                                             Polydora ciliata
                                             Polydora cirrosa
                                             Polydora colonia
                                             Polydora commensalis
                                             Polydora concharum
                                             Polydora convexa
                                             Polydora cornuta
                                             Polydora elegantissima
                                             Polydora flava
                                               Polydora flava bidentata
                                               Polydora flava flava
                                               Polydora flava soderstromi
                                             Polydora giardi
                                             Polydora gracilis
                                             Polydora hartmanae
                                             Polydora haswelli
                                             Polydora hermaphroditica
                                             Polydora heterochaeta
                                             Polydora hoplura
                                             Polydora kaneohe
                                             Polydora kempi
                                             Polydora latispinosa
                                             Polydora ligni
                                             Polydora limicola
                                             Polydora magna
                                             Polydora narica
                                             Polydora neocardalia
                                             Polydora notialis
                                             Polydora nuchalis
                                             Polydora pilikia
                                             Polydora pilocollaris
                                             Polydora posthamata
                                             Polydora protuberata
                                             Polydora pygidialis
                                             Polydora quadrilobata
                                             Polydora socialis
                                                   [Polydora plena]
                                             Polydora spongicola
                                             Polydora tentaculata
                                             Polydora tetrabranchia
                                             Polydora tridenticulata
                                             Polydora websteri
                                             Polydora wobberi
                                             Polydora woodwicki
                                     Polydorella
                                             Polydorella dawydoffi
                                             Polydorella prolifera
                                     Prionospio
                                           [Kinbergella]
                                           [Periptyches]
                                           [Pteriptyches]
                                       Prionospio (Minuspio)
                                       Prionospio (Prionospio)
                                             Prionospio aluta
                                             Prionospio banyulensis
                                             Prionospio caspersi
                                             Prionospio cristata
                                             Prionospio dubia
                                             Prionospio ehlersi
                                             Prionospio fallax
                                             Prionospio fauchaldi
                                             Prionospio heterobranchia
                                             Prionospio jubata
                                             Prionospio lighti
                                             Prionospio lobulata
                                             Prionospio malmgreni
                                               Prionospio malmgreni dubia
                                               Prionospio malmgreni malmgreni
                                             Prionospio perkinsi
                                             Prionospio pinnata
                                             Prionospio plumosa
                                             Prionospio polybranchiata
                                             Prionospio pygmaea
                                                   [Apoprionospio pygmaea]
                                             Prionospio pyramidalis
                                                   [Aquilaspio pyramidalis]
                                             Prionospio steenstrupi
                                             Prionospio tenuis
                                             Prionospio texana
                                             Prionospio treadwelli
                                     Pseudomalacoceros
                                           [Nerinides]
                                             Pseudomalacoceros agilis
                                                   [Nerinides agilis]
                                             Pseudomalacoceros cantabra
                                                   [Nerinides cantabra]
                                             Pseudomalacoceros gilchristi
                                             Pseudomalacoceros goodbodyi
                                             Pseudomalacoceros tridentata
                                             Pseudomalacoceros unidentata
                                                   [Nerinides unidentata]
                                             Pseudomalacoceros williami
                                     Pseudopolydora
                                           [Neopygospio]
                                             Pseudopolydora antennata
                                             Pseudopolydora corallicola
                                             Pseudopolydora floridensis
                                             Pseudopolydora kempi
                                               Pseudopolydora kempi japonica
                                               Pseudopolydora kempi kempi
                                             Pseudopolydora paucibranchiata
                                             Pseudopolydora pulchra
                                                   [Polydora pulchra]
                                     Pygophyllum
                                     Pygospio
                                             Pygospio californica
                                             Pygospio elegans
                                                   [Spio rathbuni]
                                             Pygospio squamata
                                     Pygospiopsis
                                           [Pseudatherospio]
                                     Rhynchospio
                                             Rhynchospio arenincola
                                             Rhynchospio australiana
                                             Rhynchospio glutaea
                                                   [Malacoceros glutaeus]
                                             Rhynchospio glycera
                                             Rhynchospio inflatus
                                     Scolecolepides
                                             Scolecolepides arctius
                                             Scolecolepides carnuculatus
                                     Scolecolepis
                                     Scolelepides
                                     Scolelepis
                                           [Aonis]
                                           [Asetocalamyzas]
                                           [Pseudonerine]
                                           [Scolepis]
                                       Scolelepis (Scolelepis)
                                             Scolelepis acuta
                                             Scolelepis agilis
                                                   [Nerine agilis]
                                             Scolelepis alaskensis
                                             Scolelepis bonnieri
                                                   [Nerine bonnieri]
                                             Scolelepis bousfieldi
                                             Scolelepis cantabra
                                             Scolelepis ciliatus
                                             Scolelepis cirratulus
                                                   [Nerine cirratulus]
                                             Scolelepis foliosa
                                                   [Nerine foliosa]
                                             Scolelepis fulginosa
                                             Scolelepis girardi
                                             Scolelepis mesnili
                                             Scolelepis papillosa
                                             Scolelepis perrieri
                                             Scolelepis squamata
                                             Scolelepis texana
                                             Scolelepis tridentata
                                     Spio
                                           [Euspio]
                                      Spio HAW01
                                             Spio aequalis
                                             Spio armata
                                             Spio butleri
                                             Spio cirrifera
                                             Spio decorata
                                             Spio filicornis
                                             Spio goniocephala
                                             Spio limicola
                                             Spio martinensis
                                             Spio minus
                                             Spio multioculata
                                             Spio pacifica
                                             Spio pettiboneae
                                             Spio punctata
                                             Spio setosa
                                     Spiogalea
                                     Spiophanella
                                     Spiophanes
                                             Spiophanes anoculata
                                             Spiophanes berkeleyorum
                                             Spiophanes bombyx
                                             Spiophanes cirrata
                                             Spiophanes duplex
                                             Spiophanes kroeyeri
                                                   [Spiophanes fimbriata]
                                             Spiophanes kroyeri
                                             Spiophanes longicirrus
                                             Spiophanes missionensis
                                             Spiophanes norrisi
                                             Spiophanes pallidus
                                             Spiophanes viriosus
                                             Spiophanes wigleyi
                                     Streblospio
                                           [Hekaterobranchus]
                                             Streblospio benedicti
                                             Streblospio dekhuyzeni
                                             Streblospio shrubsolii
                                     Tripolydora
                                             Tripolydora spinosa
                                     Xandaros