Distinguishing Characteristics |
Bivalve (2 shells); shell circular with small, pointed beak, inflated, smooth; 2 forms, thick-shelled and thin-shelled; color white or off-white; anterior end round; posterior end with slight angle; left shell with ridge from beak to posterior end; pallial sinus large, rounded, nearly reaching beaks; lateral teeth in right valve; no lateral teeth in left valve; small groove extension (chondrophore) extends posteriorly from beak. |
Similar Species |
Similar to the white Atlantic semele in shape, but the abra's shell is more smooth. |
Habitat |
Gulf and bay |
Maximum Size |
0.6 cm (1/4 in) |
Other Common Names |
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Previous Scientific Names |
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Comments |