Central Taxonomic Thesaurus
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Organism
  Animalia
         [Metazoa]
      Mollusca
            Gastropoda
              Caenogastropoda
                    Littorinimorpha
                          Calyptraeoidea
                                 [Crepiduloidea]
                            Calyptraeidae
                                   [Crepidulidae]
                                     Bicatillus
                                             Bicatillus deformis
                                     Bostrycapulus
                                             Bostrycapulus aculeatus
                                                   [Patella aculeata]
                                             Bostrycapulus calyptraeformis
                                             Bostrycapulus calyptraeiformis
                                             Bostrycapulus decorus
                                             Bostrycapulus gravispinosus
                                             Bostrycapulus heteropoma
                                             Bostrycapulus latebrus
                                             Bostrycapulus odites
                                             Bostrycapulus pritzkeri
                                             Bostrycapulus tegulicius
                                             Bostrycapulus urraca
                                     Calyptraea
                                           [Galerus]
                                             Calyptraea africana
                                             Calyptraea alta
                                             Calyptraea aurita
                                             Calyptraea baldii
                                             Calyptraea barnardi
                                             Calyptraea burchi
                                             Calyptraea capensis
                                             Calyptraea centralis
                                             Calyptraea chinensis
                                                   [Calyptraea laevigata]
                                                   [Calyptraea sinensis]
                                                   [Calyptraea spirata]
                                             Calyptraea conica
                                             Calyptraea contorta
                                                   [Galerus contortus]
                                             Calyptraea edgariana
                                             Calyptraea fastigiata
                                             Calyptraea helicoidea
                                                   [Trochita helicoidea]
                                             Calyptraea lichen
                                             Calyptraea mamillaris
                                             Calyptraea pellucida
                                                   [Trochita pellucida]
                                             Calyptraea renovata
                                             Calyptraea spinifera
                                             Calyptraea spirala
                                             Calyptraea strigata
                                             Calyptraea subreflexa
                                             Calyptraea trochiformis
                                             Calyptraea yokoyamai
                                     Cheila
                                     Crepidula
                                           [Garnotia]
                                           [Siphonipatella]
                                           [Syphopatella]
                                       Crepidula (Bostrycapulus)
                                             Crepidula aculeata
                                                   [Crepidula gravispinosa]
                                             Crepidula acuta
                                             Crepidula adunca
                                                   [Crepidula rostriformis]
                                             Crepidula aeola
                                             Crepidula aplysioides
                                             Crepidula arenata
                                             Crepidula argentina
                                             Crepidula atrasolea
                                             Crepidula badisparsa
                                             Crepidula cachimilla
                                             Crepidula carioca
                                             Crepidula cerithicola
                                             Crepidula complanata
                                             Crepidula convexa
                                                   [Crepidula glauca]
                                             Crepidula coquimbensis
                                             Crepidula cymbaeformis
                                             Crepidula decussata
                                             Crepidula depressa
                                             Crepidula derjugini
                                             Crepidula excavata
                                             Crepidula fimbriata
                                             Crepidula fornicata
                                             Crepidula glottidiarum
                                             Crepidula goreensis
                                             Crepidula grandis
                                             Crepidula hepatica
                                             Crepidula incurva
                                                   [Crepidula coei]
                                             Crepidula lentiginosa
                                             Crepidula lessonii
                                             Crepidula maculosa
                                             Crepidula marginalis
                                             Crepidula moulinsii
                                                   [Crepidula gibbosa]
                                             Crepidula naticarum
                                             Crepidula navicula
                                             Crepidula norrisiarum
                                             Crepidula nummaria
                                                   [Crepidula navicelloides]
                                             Crepidula onyx
                                                   [Crepidula lirata]
                                                   [Crepidula rugosa]
                                             Crepidula perforans
                                                   [Crepidula explanata]
                                             Crepidula philippiana
                                             Crepidula plana
                                             Crepidula porcellana
                                                   [Crepidula adspersa]
                                                   [Crepidula sulin]
                                             Crepidula protea
                                             Crepidula riisei
                                             Crepidula rostrata
                                             Crepidula striolata
                                                   [Crepidula nivea]
                                                   [Crepidula squama]
                                             Crepidula uncata
                                             Crepidula unguiformis
                                                   [Crepidula crepidula]
                                                   [Crepidula sinuosa]
                                             Crepidula ustulatulina
                                             Crepidula williamsi
                                     Crepipatella
                                             Crepipatella capensis
                                                   [Crepidula capensis]
                                             Crepipatella charybdis
                                             Crepipatella dilatata
                                                   [Crepidula dilatata]
                                             Crepipatella dorsata
                                                   [Crepidula dorsata]
                                             Crepipatella foliacea
                                             Crepipatella lingulata
                                                   [Crepidula bilobata]
                                                   [Crepidula lingulata]
                                             Crepipatella occulta
                                             Crepipatella orbiculata
                                                   [Crepidula orbiculata]
                                             Crepipatella patagonica
                                                   [Crepidula patagonica]
                                             Crepipatella peruviana
                                                   [Crepidula fecunda]
                                                   [Crepidula peruviana]
                                     Crucibulum
                                           [Dispotaea]
                                             Crucibulum auricula
                                             Crucibulum concameratum
                                                   [Crucibulum castellum]
                                             Crucibulum costatum
                                             Crucibulum cyclopium
                                             Crucibulum lignarium
                                             Crucibulum marense
                                             Crucibulum monticulus
                                             Crucibulum pectinatum
                                             Crucibulum personatum
                                             Crucibulum planum
                                             Crucibulum quiriquinae
                                             Crucibulum scutellatum
                                                   [Crucibulum imbricata]
                                             Crucibulum serratum
                                             Crucibulum spinosum
                                             Crucibulum springvaleense
                                             Crucibulum striatum
                                             Crucibulum subactum
                                             Crucibulum umbrella
                                             Crucibulum waltonense
                                     Desmaulus
                                             Desmaulus edgarianus
                                             Desmaulus extinctorium
                                                   [Calyptraea extinctorium]
                                                   [Crucibulum extinctorium]
                                     Ergaea
                                             Ergaea walshi
                                                   [Crepidula walshi]
                                                   [Siphopatella walshi]
                                     Grandicrepidula
                                             Grandicrepidula collinae
                                             Grandicrepidula densistria
                                             Grandicrepidula grandis
                                             Grandicrepidula hemispherica
                                             Grandicrepidula salebrosa
                                     Maoricrypta
                                           [Zeacrypta]
                                             Maoricrypta costata
                                                   [Crepidula costata]
                                             Maoricrypta haliotoidea
                                             Maoricrypta immersa
                                                   [Crepidula immersa]
                                             Maoricrypta kopua
                                             Maoricrypta monoxyla
                                                   [Crepidula monoxyla]
                                             Maoricrypta profunda
                                             Maoricrypta radiata
                                             Maoricrypta sodalis
                                             Maoricrypta youngi
                                                   [Crepidula youngi]
                                             Maoricryptacostata
                                     Sigapatella
                                           [Clypeola]
                                           [Zegalerus]
                                             Sigapatella aperta
                                             Sigapatella calyptraeformis
                                                   [Calyptraea calyptraeformis]
                                             Sigapatella crater
                                             Sigapatella gigantea
                                             Sigapatella hedleyi
                                             Sigapatella lamellaria
                                             Sigapatella maccoyi
                                             Sigapatella mapalia
                                             Sigapatella montensis
                                             Sigapatella novaezelandiae
                                                   [Crepidula maculata]
                                             Sigapatella nukumaruana
                                             Sigapatella ohopeana
                                             Sigapatella otamatea
                                             Sigapatella patulosa
                                             Sigapatella perampla
                                             Sigapatella spadicea
                                             Sigapatella subvaricosa
                                             Sigapatella superstes
                                             Sigapatella tatei
                                             Sigapatella tenuis
                                                   [Zegalerus tenuis]
                                             Sigapatella terraenovae
                                                   [Zegalerus crater]
                                                   [Zegalerus tumens]
                                             Sigapatella vertex
                                     Siphopatella
                                     Taimyroconus
                                             Taimyroconus zakharovi
                                     Trochita
                                           [Trochilla]
                                             Trochita dhofarensis
                                             Trochita pileolus
                                                   [Calyptraea pileolus]
                                             Trochita pileus
                                                   [Calyptraea clypeolum]
                                                   [Calyptraea costellata]
                                                   [Calyptraea pileus]
                                             Trochita trochiformis
                                                   [Calyptraea radians]
                                                   [Trochita calyptraeaformis]