Argobuccinum pustulosum, the pustular triton, is a species of predatory sea snail, a marine gastropod mollusk in the family Cymatiidae.
Description The large swollen shell of this species has prominent varices.
The maximum recorded shell length of the synonym Argobuccinum proditor tristanense is 80 mm.Welch J. J. (2010). "The "Island Rule" and Deep-Sea Gastropods: Re-Examining the Evidence". PLoS ONE 5(1): e8776. .
Minimum recorded depth of the synonym Argobuccinum proditor tristanense is 0 m. Maximum recorded depth is 280 m.
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