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Organism

  Animalia

         [Metazoa]

      Mollusca

            Gastropoda

                    Basommatophora

                            Physidae

                                     Afrophysa

                                             Afrophysa brasiliensis

                                                   [Physa brasiliensis]

                                     Amecanauta

                                             Amecanauta jaliscoensis

                                     Aplexa

                                             Aplexa elongata

                                               Aplexa elongata elongata

                                             Aplexa gigantea

                                             Aplexa hypnorum

                                                   [Physa hypnorum]

                                             Aplexa marmorata

                                                   [Physa marmorata]

                                             Aplexa venezuelensis

                              Aplexinae

                                     Archiphysa

                                             Archiphysa laphami

                                                   [Physella laphami]

                                             Archiphysa latchfordi

                                                   [Physella latchfordi]

                                     Austrinauta

                                             Austrinauta elatus

                                     Chiapaphysa

                                             Chiapaphysa grijalvae

                                             Chiapaphysa pacifica

                                     Haitia

                                             Haitia integra

                                                   [Physa brevispira]

                                                   [Physa walkeri]

                                     Laurentiphysa

                                     Mayabina

                                             Mayabina obtusa

                                                   [Physa obtusa]

                                             Mayabina petenensis

                                             Mayabina polita

                                             Mayabina sanctijohannis

                                             Mayabina spiculata

                                             Mayabina tempisquensis

                                     Mexinauta

                                             Mexinauta aurantius

                                                   [Aplexa aurantia]

                                                   [Mexinauta aurantia]

                                             Mexinauta impluviatus

                                             Mexinauta nitens

                                                   [Bulinus berlandierianus]

                                             Mexinauta princeps

                                                   [Aplexa princeps]

                                     Physa

                                             Physa arachleica

                                             Physa chippevarum

                                                   [Laurentiphysa chippevarum]

                                             Physa columbiana

                                             Physa concolor

                                             Physa copei

                                             Physa cyanea

                                             Physa doeringi

                                             Physa duplicata

                                             Physa fontinalis

                                             Physa gyrina

                                               Physa gyrina gyrina

                                               Physa gyrina latchfordi

                                             Physa heterostropha

                                             Physa hordacea

                                             Physa integra

                                             Physa jennessi

                                               Physa jennessi athearni

                                               Physa jennessi jennessi

                                             Physa lordi

                                             Physa megalochlamys

                                             Physa natricina

                                             Physa nuttalli

                                             Physa pleromatis

                                             Physa propingua

                                             Physa proteus

                                             Physa pumilia

                                             Physa rhomboidea

                                             Physa siberica

                                             Physa skinneri

                                             Physa vernalis

                                                   [Physa aplectoides]

                                             Physa wichmanni

                                     Physella

                                             Physella acuta

                                                   [Aplexa rivalis]

                                                   [Haitia acuta]

                                                   [Physa acuta]

                                                   [Physa castanea]

                                                   [Physa plicata]

                                                   [Physa rivalis]

                                             Physella ancillaria

                                                   [Physa ancillaria]

                                             Physella ashmuni

                                                   [Archiphysa ashmuni]

                                             Physella berendti

                                             Physella bermudezi

                                             Physella bottimeri

                                             Physella boucardi

                                             Physella brevispira

                                             Physella carolinae

                                                   [Physa carolinae]

                                             Physella columbiana

                                             Physella conoidea

                                             Physella cooperi

                                             Physella costata

                                                   [Physa costata]

                                             Physella cubensis

                                                   [Haitia cubensis]

                                                   [Physa cubensis]

                                             Physella elegans

                                             Physella globosa

                                                   [Physa globosa]

                                             Physella gyrina

                                                   [Physa albofilata]

                                                   [Physa ampullacea]

                                                   [Physa elliptica]

                                                   [Physa goodrichi]

                                                   [Physa gyrina elliptica]

                                                   [Physa hildrethiana]

                                                   [Physa occidentalis]

                                                   [Physa plena]

                                                   [Physa remingtoni]

                                                   [Physa triticea]

                                                   [Physa venusta]

                                                   [Physa warreniana]

                                             Physella hemphilli

                                             Physella hendersoni

                                             Physella heterostropha

                                               Physella heterostropha heterostropha

                                               Physella heterostropha pomila

                                             Physella hordacea

                                             Physella humerosa

                                                   [Physa humerosa]

                                             Physella integra

                                             Physella jamaicensis

                                                   [Haitia jamaicensis]

                                                   [Physa jamaicensis]

                                             Physella johnsoni

                                                   [Physa johnsoni]

                                             Physella lacustris

                                             Physella lordi

                                             Physella magnalacustris

                                                   [Physa magnalacustris]

                                             Physella mexicana

                                                   [Haitia mexicana]

                                                   [Physa anatina]

                                                   [Physa crandalli]

                                                   [Physa distinguenda]

                                                   [Physa forsheyi]

                                                   [Physa mexicana]

                                             Physella microstoma

                                                   [Physa microstoma]

                                             Physella microstriata

                                             Physella moreleti

                                                   [Haitia moreleti]

                                             Physella osculans

                                                   [Physa osculans]

                                             Physella parkeri

                                                   [Archiphysa parkeri]

                                                   [Physa parkeri]

                                             Physella patzcuarensis

                                             Physella pomilia

                                                   [Physa barberi]

                                                   [Physa pomilia hendersoni]

                                                   [Physa pomilia]

                                             Physella propinqua

                                                   [Physa propinqua]

                                             Physella sayi

                                                   [Physa sayi]

                                             Physella sonomae

                                                   [Archiphysa sonomae]

                                             Physella spelunca

                                             Physella squalida

                                             Physella traski

                                             Physella traskii

                                             Physella utahensis

                                             Physella venustula

                                                   [Haitia venustula]

                                                   [Physa venustula]

                                             Physella vinosa

                                                   [Physa vinosa]

                                             Physella virgata

                                                   [Physa virgata]

                                             Physella virginea

                                             Physella wrighti

                                             Physella zionis

                                                   [Physa zionis]

                              Physinae

                                     Sibirenauta

                                             Sibirenauta elongata

                                                   [Aplexa hypnorum pilsbryi]

                                                   [Physa elongata]

                                                   [Sibirenauta elongatus]

                                             Sibirenauta sibirica

                                     Stenophysa

                                             Stenophysa marmorata

                                                   [Physa sowerbyana]

                                             Stenophysa maugeriae

                                             Stenophysa meigsii

                                                   [Physa meigsii]

                                             Stenophysa spathidophallus

                                     Tropinauta

                                             Tropinauta sinusdulcensis

                                     Ultraphysella

                                             Ultraphysella sinaloae

                                     Utahphysa

                                             Utahphysa microstriata

                                                   [Aplexa microstriata]