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・ Abyssochrysidae
・ Abyssochrysoidea
Abyssochrysos
・ Abyssochrysos bicinctus
・ Abyssochrysos brasilianus
・ Abyssochrysos eburneus
・ Abyssochrysos melanioides
・ Abyssochrysos melvilli
・ Abyssochrysos xouthos
・ Abyssocomitas
・ Abyssocomitas kurilokamchatica
・ Abyssocottidae
・ Abyssocottus
・ Abyssocottus elochini
・ Abyssocottus gibbosus
・ Abyssocottus korotneffi
・ Abyssogyra


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Abyssochrysos : ウィキペディア英語版
Abyssochrysos

''Abyssochrysos'' is a genus of bathyal sea snails, marine gastropod mollusks in the family Abyssochrysidae.
==Description==
The characteristics (shell, radula and anatomy) of the species mark this genus as simple gastropods, unassigned in the clade Caenogastropoda. Their taenioglossate radula (formula: 2+1+1+1+2) is unique among the Prosobranchia because of the sickle-shaped rachidian tooth and the thick,
sinuous, sharply cusped lateral teeth. They have tentacles but lack eyes. The mantle cavity goes deep (about 2½ whorls). The long, wide ctenidium is monopectinate. The pallial gonoducts are closed. The large penis-like organ is a right-dorsal mantle process.〔(R.S. 1979. Classification and systematic relationships of the Abyssochrysidae, a relict family of bathyal snails (Prosobranchia; Gastropoda). Smithsonian Contributions to Zoology 290: 1-21 )〕

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