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Mari cha Black & White Stock Photos

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Mari cha Black & White Stock Photos

. Fresh-water biology. Freshwater biology. This group has a general distribution. The prominent beaks with the distinctly mari^ed nepeonic shell are the distinctive feature, but in some species these are lacking. The thin, rounded, polished shell is, however, quite characteristic. E.xample, M. partumeium Say (Fig. Fig. 1530. 171 (172) Shell subrhomboidal, thin, moderately inflated, with the posterior side longer; cardinal teeth feeble, only one in each valve. Eupera Bourguignat. A tropical group, of which two or three species occur in Florida, Ala- bama, and Te.xas. The rhomboidal shape is cha Stock Photo
RMPFY8RY–. Fresh-water biology. Freshwater biology. This group has a general distribution. The prominent beaks with the distinctly mari^ed nepeonic shell are the distinctive feature, but in some species these are lacking. The thin, rounded, polished shell is, however, quite characteristic. E.xample, M. partumeium Say (Fig. Fig. 1530. 171 (172) Shell subrhomboidal, thin, moderately inflated, with the posterior side longer; cardinal teeth feeble, only one in each valve. Eupera Bourguignat. A tropical group, of which two or three species occur in Florida, Ala- bama, and Te.xas. The rhomboidal shape is cha
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