Thylacodes decussatus is a species of sea snail, a marine gastropod mollusk in the family Vermetidae, commonly known as worm snails or worm shells. This species was formerly known as Serpulorbis decussatus.
Description The maximum recorded shell length is 90 mm.Welch J. J. (2010). "The "Island Rule" and Deep-Sea Gastropods: Re-Examining the Evidence". PLoS ONE 5(1): e8776. .
Habitat The minimum recorded depth for this species is 0 m, while the maximum recorded depth is 80 m.
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