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Crepidula atrasolea
''Crepidula atrasolea'' is a species of small sea snail, a slipper snail, a marine gastropod mollusk in the family Calyptraeidae, the slipper snails or slipper limpets, cup-and-saucer snails, and hat snails.
This species is similar to ''C. plana'' and ''C. depressa'' but can be distinguished from them on the basis of dark pigment on the foot, direct developing embryos. DNA sequence data shows that these three species are closely related within the genus ''Crepidula'' but are not closely related to other flat white species of ''Crepidula'' which occur distributed throughout the phylogeny of ''Crepidula''.
A video showing the differences between the species is available (CollinLab videos )
==Distribution==
This species occurs in the Western Atlantic Ocean. This species occurs in Florida, South Carolina, North Carolina. Flat white ''Crepidula'' occurring north of this range are almost certainly ''Crepidula plana''. Old records often confuse ''Crepidula plana'', ''Crepidula atrasolea'' and ''Crepidula depressa'', and distribution data should be treated with caution unless it includes observations of development type, body color, or genetic data.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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