64a. Greatest shell diameter close to the closing membrane, faint reticulate sculpture, constriction below the shell aperture.
Cuvierina columnella atlantica
64b. Greatest shell diameter near the middle of the shell, no or a very faint constriction below the shell aperture.
Step 66. 65
1 possible taxon remaining show scientific names show common names
197 taxa excluded
show scientific names
show common names
- Abranchaea chinensis
- Atlanta affinis
- Atlanta californiensis
- Atlanta echinogyra
- Atlanta fragilis
- Atlanta frontieri
- Atlanta fusca
- Atlanta gaudichaudi
- Atlanta gibbosa
- Atlanta helicinoides helicinoides
- Atlanta inclinata
- Atlanta inflata
- Atlanta lesueuri
- Atlanta meteori
- Atlanta oligogyra
- Atlanta pacifica
- Atlanta peresi
- Atlanta peroni
- Atlanta plana
- Atlanta rosea
- Atlanta tokiokai
- Atlanta turriculata turriculata
- Beaked larva
- Cardiapoda placenta
- Cardiapoda richardi
- Carinaria cithara cithara
- Carinaria cristata cristata
- Carinaria galea
- Carinaria lamarcki challengeri
- Cavolinia gibbosa flava
- Cavolinia globulosa
- Cavolinia inflexa imitans
- Cavolinia tridentata affinis
- Cavolinia uncinata pulsatapusilla pulsatapusilla
- Cavolinia uncinata uncinata roperi
- Cephalobrachia bonnevii
- Cephalobrachia macrochaeta
- Cephalopyge trematoides
- Clio andreae
- Clio campylura
- Clio chaptali
- Clio convexa
- Clio cuspidata
- Clio orthotheca
- Clio piatkowskii
- Clio pyramidata antarctica
- Clio recurva
- Clio scheelei
- Clione limacina antarctica
- Cliopsis krohni grandis
- Corolla calceola
- Corolla intermedia
- Corolla ovata
- Corolla spectabilis
- Creseis acicula acicula
- Creseis bulgia
- Creseis chierchiae
- Creseis virgula conica
- Cymbulia parvidentata
- Cymbulia peroni minor
- Cymbulia sibogae
- Desmopterus gardineri
- Desmopterus pacificus
- Desmopterus papilio
- Diacavolinia angulosa
- Diacavolinia aspina
- Diacavolinia atlantica
- Diacavolinia bandaensis
- Diacavolinia bicornis
- Diacavolinia constricta
- Diacavolinia deblainvillei
- Diacavolinia deshayesi
- Diacavolinia elegans
- Diacavolinia flexipes
- Diacavolinia grayi
- Diacavolinia limbata africana
- Diacavolinia longirostris
- Diacavolinia mcgowani
- Diacavolinia ovalis
- Diacavolinia pacifica
- Diacavolinia robusta
- Diacavolinia souleyeti
- Diacavolinia strangulata
- Diacavolinia striata
- Diacavolinia triangulata
- Diacavolinia vanutrechti meisenheimeri
- Diacria costata
- Diacria danae
- Diacria erythra crassa
- Diacria maculata
- Diacria major
- Diacria piccola
- Diacria quadridentata
- Diacria rampali
- Diacria schmidti occidentalis
- Diacria schmidti schmidti
- Diacria trispinosa atlantica
- Fiona pinnata
- Firoloida desmaresti
- Fowlerina punctata
- Fowlerina zetesios
- Glaucillus marginata
- Glaucus atlanticus
- Gleba chrysostricta
- Gleba cordata
- Hyalocylis striata
- Hydromyles globulosa
- Janthina exigua
- Janthina janthina
- Janthina pallida
- Janthina prolongata
- Janthina umbilicata
- Laginiopsis trilobata
- Limacina bulimoides
- Limacina cochlostyloides
- Limacina helicina antarctica antarctica
- Limacina helicina helicina acuta
- Limacina helicoides
- Limacina inflata
- Limacina lesueuri
- Limacina retroversa australis
- Limacina trochiformis
- Massya longicirrata
- Notobranchaea bleekerae
- Notobranchaea grandis
- Notobranchaea hjorti
- Notobranchaea inopinata
- Notobranchaea longicollis
- Notobranchaea macdonaldi macdonaldi
- Notobranchaea tetrabranchiata
- Notobranchaea valdiviae
- Oxygyrus keraudreni
- Paedoclione doliiformis
- Paraclione flavescens
- Paraclione longicaudata
- Paraclione pelseneeri
- Peraclis apicifulva
- Peraclis bispinosa
- Peraclis depressa
- Peraclis michaelsarsi
- Peraclis moluccensis
- Peraclis philiporum
- Peraclis reticulata
- Peraclis rissoides
- Peraclis triacantha
- Peraclis valdiviae
- Phylliroe atlantica
- Phylliroe bucephala
- Planktomya henseni
- Platybrachium antarcticum
- Pneumoderma atlanticum atlanticum atlanticum
- Pneumoderma atlanticum boasi
- Pneumoderma atlanticum pacificum
- Pneumoderma atlanticum souleyeti
- Pneumoderma degraaffi
- Pneumoderma heronensis
- Pneumoderma mediterraneum
- Pneumoderma meisenheimeri
- Pneumoderma peroni heterocotylum
- Pneumodermopsis brachialis
- Pneumodermopsis canephora
- Pneumodermopsis ciliata
- Pneumodermopsis macrochira
- Pneumodermopsis macrocotyla
- Pneumodermopsis michaelsarsi
- Pneumodermopsis minuta
- Pneumodermopsis oligocotyla
- Pneumodermopsis paucidens paucidens
- Pneumodermopsis polycotyla
- Pneumodermopsis pupula
- Pneumodermopsis simplex
- Pneumodermopsis spoeli
- Pneumodermopsis teschi
- Protatlanta souleyeti
- Pruvotella danae
- Pruvotella pellucida
- Pterosoma planum
- Pterotrachea coronata
- Pterotrachea hippocampus
- Pterotrachea minuta
- Pterotrachea scutata
- Recluzia
- Recluzia hargravesi
- Recluzia insignis
- Recluzia jehennei
- Recluzia montrouzieri
- Recluzia rollandiana
- Schizobrachium polycotylum
- Spongiobranchaea australis
- Spongiobranchaea intermedia
- Styliola subula
- Thalassopterus zancleus
- Thliptodon akatukai
- Thliptodon antarcticus
- Thliptodon diaphanus
- Thliptodon gegenbauri
- Thliptodon schmidti
Decision path