Anal funnel more or less symmetrical, with cirri
Step 289. 222
Anal funnel ventrally visibly longer than dorsally, with cirri
Nicomache trispinata
Nicomache trispinata
Anal funnel strongly asymmetrical, without cirri
Petaloproctus borealis
Petaloproctus borealis
5 possible taxa remaining show scientific names show common names
614 taxa excluded
show scientific names
show common names
- Abyssoninoe hibernica
- Acanthicolepis asperrima
- Acrocirridae
- Adyte pellucida
- Aglaophamus malmgreni
- Aglaophamus rubella
- Alciopa reynaudii
- Alentia gelatinosa
- Alkmaria romijni
- Amaeana trilobata
- Amage auricula
- Amblyosyllis formosa
- Ampharete acutifrons
- Ampharete baltica
- Ampharete falcata
- Ampharete finmarchica
- Ampharete goesi
- Ampharete lindstroemi
- Ampharetidae
- Amphicteis gunneri
- Amphicteis midas
- Amphicteis sundevalli
- Amphiglena mediterranea
- Amphinomidae
- Amphitrite cirrata
- Amphitritides gracilis
- Amythasides macroglossus
- Anobothrus gracilis
- Antinoe finmarchica
- Aonides oxycephala
- Aonides paucibranchiata
- Aphelochaeta marioni
- Aphelochaeta multibranchis
- Aphelochaeta vivipara
- Aphrodita aculeata
- Aphroditidae
- Aphropharynx heterochaeta
- Apistobranchidae
- Apistobranchus tenuis
- Apistobranchus tullbergi
- Apomatus similis
- Arenicola marina
- Arenicolidae
- Arenicolides ecaudata
- Arenotrocha minuta
- Aricidea albatrossae
- Aricidea catherinae
- Aricidea cerrutii
- Aricidea minuta
- Aricidea simonae
- Aricidea suecica
- Artacama proboscidea
- Asclerocheilus intermedius
- Austrolaenilla mollis
- Autolytus alexandri
- Autolytus brachycephalus
- Autolytus edwarsi
- Autolytus inermis
- Autolytus langerhansi
- Autolytus longeferiens
- Autolytus prolifer
- Autolytus quinquedecimdentatus
- Autolytus rubrolineatus
- Autolytus rubropunctatus
- Axionice maculata
- Baldia johnstoni
- Bathychaetus heptapous
- Bispira crassicornis
- Bispira volutacornis
- Brada inhabilis
- Brada villosa
- Branchiomma bombyx
- Branchiomma inconspicua
- Brania limbata
- Brania pusilla
- Bylgides elegans
- Bylgides groenlandicus
- Bylgides sarsi
- Calamyzas amphictenicola
- Capitella capitata
- Capitella giardi
- Capitella minima
- Capitellidae
- Caulleriella alata
- Caulleriella bioculata
- Caulleriella caput-esocis
- Caulleriella parva
- Caulleriella serrata
- Ceratocephale loveni
- Chaetoparia nilssoni
- Chaetopteridae
- Chaetopterus variopedatus
- Chaetozone setosa
- Chirimia biceps
- Chitinopoma serrula
- Chone duneri
- Chone fauveli
- Chone filicaudata
- Chone longocirrata
- Circeis armoricana
- Circeis spirillum
- Cirratulidae
- Cirratulus cirratus
- Cirratulus filiformis
- Cirriformia tentaculata
- Cirrophorus armatus
- Cirrophorus eliasoni
- Cirrophorus lyra
- Clymenella cincta
- Clymenella torquata
- Clymenura lankesteri
- Commensodorum commensalis
- Cossura longocirrata
- Ctenodrilinae
- Ctenodrilus serratus
- Dasybranchus caducus
- Dinophilus gyrociliatus
- Dinophilus taeniatus
- Diplaconotum paucidentatum
- Diplocirrus glaucus
- Ditrupa arietina
- Diurodrilidae
- Diurodrilus minimus
- Diurodrilus subterraneus
- Dodecaceria concharum
- Dorvillea erucaeformis
- Dorvilleidae
- Drilonereis
- Drilonereis brattstroemi
- Drilonereis filum
- Dysponetus caecus
- Dysponetus paleophorus
- Eclysippe vanelli
- Enipo elisabethae
- Enipo kinbergi
- Ephesiella peripatus
- Eteone barbata
- Eteone flava
- Eteone foliosa
- Eteone fucata
- Eteone longa
- Eteone picta
- Eteone spetsbergensis
- Eteone suecica
- Euchone analis
- Euchone papillosa
- Euchone rubrocincta
- Euclymene droebachiensis
- Euclymene lindrothi
- Euclymene oerstedi
- Euclymene robusta
- Eucranta villosa
- Eulalia bilineata
- Eulalia clavigera
- Eulalia expusilla
- Eulalia hanssoni
- Eulalia mustela
- Eulalia tjalfiensis
- Eulalia tripunctata
- Eulalia viridis
- Eumida arctica
- Eumida bahusiensis
- Eumida ockelmanni
- Eumida sanguinea
- Eunice dubitata
- Eunice norvegica
- Eunice pennata
- Eunicidae
- Eunoe nodosa
- Euphrosine armadillo
- Euphrosine borealis
- Euphrosine foliosa
- Euphrosinidae
- Eupolymnia nebulosa
- Eupolymnia nesidensis
- Eurysyllis tuberculata
- Eusyllis assimilis
- Eusyllis blomstrandi
- Eusyllis lamelligera
- Euzonus flabelligerus
- Exogone furcifera
- Exogone hebes
- Exogone naidina
- Exogone verugera
- Fabricia stellaris
- Fabriciola baltica
- Ficopomatus enigmaticus
- Filograna implexa
- Flabelligera affinis
- Flabelligeridae
- Gattyana amondseni
- Gattyana cirrosa
- Glycera alba
- Glycera capitata
- Glycera gigantea
- Glycera lapidum
- Glycera rouxii
- Glycera tesselata
- Glycera tridactyla
- Glycera unicornis
- Glyceridae
- Glycinde nordmanni
- Goniada maculata
- Goniada norvegica
- Goniada pallida
- Goniadella bobretzkii
- Goniadidae
- Gyptis mackiei
- Gyptis propinqua
- Gyptis rosea
- Haematocleptes terebellidis
- Harmothoe antilopes
- Harmothoe aspera
- Harmothoe borealis
- Harmothoe extenuata
- Harmothoe fragilis
- Harmothoe imbricata
- Harmothoe impar
- Harmothoe pagenstecheri
- Harmothoe spinifera
- Harmothoe viridis
- Hauchiella tribullata
- Hermodice carunculata
- Hermonia hystrix
- Hesionides arenaria
- Hesionides maxima
- Hesioninae
- Hesionura elongata
- Heteromastus filiformis
- Histriobdella homari
- Histriobdellidae
- Hyalinoecia tubicola
- Hydroides elegans
- Hydroides norvegica
- Hypania invalida
- Iphitime hartmanae
- Isocirrus planiceps
- Janua brasiliensis
- Janua pagenstecheri
- Jasmineira candela
- Jasmineira elegans
- Josephella marenzelleri
- Jugaria granulata
- Kefersteinia cirrata
- Laetmonice filicornis
- Lanassa venusta
- Lanice conchilega
- Laonice bahusiensis
- Laonice cirrata
- Laonice sarsi
- Laonome kroeyeri
- Lepidonotus clava
- Lepidonotus squamatus
- Leucia nivea
- Levinsenia gracilis
- Lipobranchus jeffreysii
- Lumbriclymene cylindricauda
- Lumbriclymene minor
- Lumbrineridae
- Lumbrineris agastos
- Lumbrineris aniara
- Lumbrineris fragilis
- Lumbrineris gracilis
- Lumbrineris latreilli
- Lumbrineris magnidentata
- Lumbrineris tetraura
- Lysilla loveni
- Lysippe labiata
- Lysippides fragilis
- Macrochaeta bansei
- Macrochaeta clavicornis
- Macrochaeta helgolandica
- Macrochaeta polyonyx
- Magelona alleni
- Magelona filiformis
- Magelona minuta
- Magelona mirabilis
- Magelonidae
- Malacoceros fuliginosus
- Malacoceros tetracerus
- Malacoceros vulgaris
- Maldane arctica
- Maldane sarsi
- Maldanidae
- Malmgrenia andreapolis
- Malmgrenia arenicolae
- Malmgrenia castanea
- Malmgrenia furcosetosa
- Malmgrenia glabra
- Malmgrenia ljungmani
- Malmgrenia marphysae
- Malmgrenia mcintoshi
- Manayunkia aestuarina
- Marenzelleria viridis
- Marenzelleria wireni
- Marphysa sanguinea
- Mediomastus fragilis
- Meganerilla swedmarki
- Melinna cristata
- Melinna elisabethae
- Microclymene acirrata
- Microphthalminae
- Microphthalmus aberrans
- Microphthalmus bifurcatus
- Microphthalmus fragilis
- Microphthalmus listensis
- Microphthalmus sczelkowii
- Microphthalmus similis
- Microspio mecznikowianus
- Mugga wahrbergi
- Myriochele danielsseni
- Myriochele oculata
- Mystides caeca
- Mystides southerni
- Myxicola infundibulum
- Naineris quadricuspida
- Neoamphitrite affinis
- Neoamphitrite figulus
- Neoamphitrite grayi
- Neoamphitrite groenlandica
- Neoleanira tetragona
- Neopolynoe paradoxa
- Nephtyidae
- Nephtys assimilis
- Nephtys caeca
- Nephtys ciliata
- Nephtys cirrosa
- Nephtys hombergii
- Nephtys hystricis
- Nephtys incisa
- Nephtys kersivalensis
- Nephtys longosetosa
- Nephtys paradoxa
- Nephtys pente
- Nephtys pulchra
- Nereididae
- Nereimyra punctata
- Nereiphylla lutea
- Nereis diversicolor
- Nereis elitoralis
- Nereis fucata
- Nereis irrorata
- Nereis longissima
- Nereis pelagica
- Nereis succinea
- Nereis virens
- Nereis zonata
- Nerilla antennata
- Nerillidae
- Nerillidium gracile
- Nerillidium marinum
- Nerillidium troglochaetoides
- Nicolea venustula
- Nicolea zostericola
- Notaulax rectangulata
- Nothria conchylega
- Notomastus latericeus
- Notophyllum americanum
- Notophyllum foliosum
- Octobranchus floriceps
- Odontosyllis ctenosoma
- Odontosyllis fulgurans
- Odontosyllis gibba
- Onuphidae
- Ophelia limacina
- Ophelia rathkei
- Opheliinae
- Ophelina abranchiata
- Ophelina acuminata
- Ophelina cylindricaudata
- Ophelina minima
- Ophelina modesta
- Ophelina norvegica
- Ophelininae
- Ophiodromus flexuosus
- Ophryotrocha dubia
- Ophryotrocha gerlachi
- Ophryotrocha geryonicola
- Ophryotrocha gracilis
- Ophryotrocha hartmanni
- Ophryotrocha longidentata
- Ophryotrocha maculata
- Ophryotrocha puerilis
- Ophryotrocha socialis
- Opisthodonta pterochaeta
- Orbinia armandi
- Orbinia kupfferi
- Orbinia latreillii
- Orbinia norvegica
- Orbinia sertulata
- Orbiniidae
- Ougia subaequalis
- Owenia fusiformis
- Paleaonotus debilis
- Panthalis oerstedi
- Paradexiospira vitrea
- Paradiopatra fiordica
- Paradiopatra quadricuspis
- Paramphinome jeffreysii
- Paramphitrite tetrabranchia
- Paranaitis kosteriensis
- Paranaitis wahlbergi
- Paranerilla limicola
- Paraonidae
- Paraonis fulgens
- Parapodrilus psammophilus
- Parergodrilidae
- Pareurythoe borealis
- Parophryotrocha isochaeta
- Parougia eliasoni
- Pectinaria auricoma
- Pectinaria belgica
- Pectinaria granulata
- Pectinaria hyperborea
- Pectinaria koreni
- Pectinariidae
- Perinereis cultrifera
- Petta pusilla
- Pherusa falcata
- Pherusa flabellata
- Pherusa plumosa
- Pholoe inornata
- Pholoe pallida
- Pholoe synophthalmica
- Pholoidae
- Phyllochaetopterus major
- Phyllodoce citrina
- Phyllodoce groenlandica
- Phyllodoce laminosa
- Phyllodoce lineata
- Phyllodoce longipes
- Phyllodoce maculata
- Phyllodoce mucosa
- Phyllodoce rosea
- Phyllodocidae
- Pionosyllis compacta
- Pionosyllis lamelligera
- Pionosyllis pulligera
- Pionosyllis serrata
- Pirakia punctifera
- Pisione remota
- Pista cristata
- Pistella lornensis
- Placostegus tridentatus
- Platynereis dumerilii
- Platynereis massiliensis
- Podarkeopsis helgolandica
- Poecilochaetus serpens
- Polycirrus arcticus
- Polycirrus aurantiacus
- Polycirrus caliendrum
- Polycirrus latidens
- Polycirrus medusa
- Polycirrus norvegicus
- Polycirrus plumosus
- Polydora antennata
- Polydora caeca
- Polydora caulleryi
- Polydora ciliata
- Polydora cornuta
- Polydora flava
- Polydora giardi
- Polydora hermaphroditica
- Polydora hoplura
- Polydora ligerica
- Polydora limicola
- Polydora paucibranchiata
- Polydora pulchra
- Polydora quadrilobata
- Polydora socialis
- Polygordiidae
- Polygordius appendiculatus
- Polygordius lacteus
- Polynoe scolopendrina
- Polynoidae
- Polyphysia crassa
- Pomatoceros lamarcki
- Pomatoceros triqueter
- Potamilla neglecta
- Potamilla torelli
- Praxillella affinis
- Praxillella praetermissa
- Praxillella quadrilobata
- Praxillura longissima
- Prionospio banyulensis
- Prionospio cirrifera
- Prionospio fallax
- Prionospio multibranchiata
- Prionospio plumosa
- Prionospio steenstrupi
- Proceraea aurantiaca
- Proceraea cornuta
- Proceraea picta
- Proceraea prismatica
- Procerastea halleziana
- Procerastea nematodes
- Proclea graffii
- Proclymene muelleri
- Protodorvillea kefersteini
- Protodrilidae
- Protodriloides chaetifer
- Protodriloides symbioticus
- Protodriloididae
- Protodrilus adhaerens
- Protodrilus affinis
- Protodrilus brevis
- Protodrilus ciliatus
- Protodrilus gracilis
- Protodrilus hatscheki
- Protodrilus helgolandicus
- Protodrilus hypoleucus
- Protodrilus oculifer
- Protodrilus purpureus
- Protodrilus robustus
- Protodrilus rubropharyngeus
- Protomystides exigua
- Protula tubularia
- Psammodrilidae
- Psammodrilus balanoglossoides
- Pseudomystides limbata
- Pseudomystides spinachia
- Pseudopotamilla reniformis
- Pusillotrocha akessoni
- Pygospio elegans
- Raricirrus beryli
- Rhodine gracilior
- Rhodine loveni
- Sabella pavonina
- Sabellaria alveolata
- Sabellaria spinulosa
- Sabellariidae
- Sabellidae
- Sabellides borealis
- Sabellides octocirrata
- Salmacina dysteri
- Samytha sexcirrata
- Scalibregma inflatum
- Scalibregmatidae
- Scolelepis bonnieri
- Scolelepis cantabra
- Scolelepis foliosa
- Scolelepis korsuni
- Scolelepis squamata
- Scolelepis tridentata
- Scoloplos armiger
- Serpula vermicularis
- Serpulidae
- Sigalion mathildae
- Sigalionidae
- Sige fusigera
- Sige oliveri
- Sosane sulcata
- Sosanopsis wireni
- Sphaerodoridae
- Sphaerodoridium fauchaldi
- Sphaerodoropsis baltica
- Sphaerodoropsis disticha
- Sphaerodoropsis minuta
- Sphaerodoropsis philippi
- Sphaerodorum flavum
- Sphaerosyllis bulbosa
- Sphaerosyllis erinaceus
- Sphaerosyllis hystrix
- Sphaerosyllis tetralix
- Spinther arcticus
- Spio filicornis
- Spio goniocephala
- Spio martinensis
- Spiochaetopterus typicus
- Spionidae
- Spiophanes bombyx
- Spiophanes kroeyeri
- Spiophanes urceolata
- Spirorbis corallinae
- Spirorbis spirorbis
- Spirorbis tridentatus
- Sternaspis scutata
- Sthenelais boa
- Sthenelais jeffreysii
- Sthenelais limicola
- Sthenelais zetlandica
- Streblosoma bairdi
- Streblosoma intestinale
- Streblospio benedicti
- Streptosyllis arenae
- Streptosyllis websteri
- Stygocapitella subterranea
- Syllidae
- Syllides articulocirrata
- Syllides benedicti
- Syllides longocirrata
- Syllidia armata
- Syllis gracilis
- Synelmis klatti
- Terebellidae
- Terebellides stroemi
- Thalassochaetus palpifoliaceus
- Tharyx killariensis
- Thelepus cincinnatus
- Tomopteris helgolandica
- Tomopteris septentrionalis
- Travisia forbesii
- Trichobranchidae
- Trichobranchus glacialis
- Trichobranchus roseus
- Trilobodrilus axi
- Trilobodrilus heideri
- Trochochaeta multisetosa
- Troglochaetus beranecki
- Typosyllis armillaris
- Typosyllis cornuta
- Typosyllis hyalina
- Typosyllis variegata
- Websterinereis glauca
Decision path