Stylommatophora

gastropod superorder

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In gastropod: Classification
Superorder Stylommatophora Mantle cavity a pulmonary sac; gonopores with common opening on right side or at most narrowly separated; shell conical to vestigial, heavily to weakly calcified; eyes at tips of upper (usually) tentacles; terrestrial; about 26,800 species. Order Orthurethra Pore of ureter opening into mantle…
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