What Shell is That?: A Guide to the Shell-bearing Mollusks of Eastern North America |
Common terms and phrases
abundant animal anterior aperture apex appearance Atlantic coast bands base beach beaks body-whorl bottoms brown burrow Cape clam closed coast COLOR common concentric convex covered dark deep DESCRIPTION distinguished elevated elongated England epidermis five whorls flat flattened Florida folds four frequently gastropod growth-lines horny inch in diameter inner lip interior lakes lines Linnĉus lives lower Maine margin marked minute moderately mollusk muddy narrow Natural Natural Size nearly northern numerous oblique occurs one-half inch long operculum outer lip oval Pale pelecypod places pointed Polygyra posterior end prominent radiating reflected ribs ridges river rounded sand sandy shallow water sharp Shell large Shell small shores side six whorls slightly smooth snail solid sometimes species species is found specimens spire stones stout strong surface suture teeth thick thin throughout tide umbilicus upper usually valves widely wrinkled Yellowish-brown young