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Carolina Mussel Atlas North bttp://www.newildlife.org/pgD7 VildlifeSpeciesCon/pg7bla I 2O.htm and Status �'rr;�r.�tr��'v�r Speoes 4111 WRDLIFE SPEaES LCONSERVATIN creeper SteopOtus undulatus (Say, 1817) V1aa-5& MUM 1"NVU DIAL 14) Ut7 17 U Ly. Shells of the creeper tend to be rather thin and fragile, Specimens May peach over 100 mm in A 04JIM UUM, V length in North Carolina. The periostracurn is generally smooth--and shiny. The color may range from yellowish to dark brown. ..Green rays riiay extend over the entire surface of the shell. The anterior end is rounded and the postei idi end is'-rounded except a straight margin may exist near the terminus of the posterior ridge. The dorsal margin is straight with the urnbos extending above this margin. The ventral Margin is irregularly, rounded. Growth rests are clearly evident wheihffie shell is held toward a bright light. Tfve posterior slope .tends tb be . roughened even on shells tending to be smooth. Lateral teeth are absent and the. pow 2 A r,4* vestigial i fem+k nr= in each valve: The .nacre tends to (e)derior) be iridescent and ranges in color from gray to blue. The nacre may be exteinsively colored salmon. Distribution (see ma The range of the creeper includes both the -Atlafntic Slope and the Interior Basin. It is found through the Mississippi and Ohio drainages, from Central Texas to Lake Winnipeg. Canada. In th& Atlahfc Slope it • occurs from the Savannah River in South Carolina to the St. Lawrence River in Canada (Johnson 1970). Distribution by County: French Broad River Basin: Transylvania Co. (Little.River Subbasin; French Broad River), Henderson Cd. (Cane Creek Subbasin, French Broad Rivet), BuncombeCo. (French Broad River). Broad River Basin: Polk Co. (Green River). Pee Dee River Bisln: UNDn -C6. (Goose Cr. Subbasin), Stanl� bo. (Bear Cr. Subbasin), Montgomery Co. (Barnes and Deftsofis creek subbasins, Little River Subbasin), Raridolph Co. (Caraway Cr. Subbasin). Cape F6ar River 'Basin: Moore Cd. (Deep River Subbasin), Chatham Co. (Rocky River -Subbasin, Buckhorn Cr. Subbasin), Alamance Co. (Stinking Quarter Cr. Subbasin), .-Orain'ge Co. (Cane Cr.- Subbasin). Neuse River Basin: Orange Co . . (Eno and Little river subbasins), Person Co. (Flat ' River Subbasin), Durham Co. (Flat and Little river subbasins), Wake Co. (Crabtree, Swift, and Middle creek subbasins), Johnston Co. . (Middle and Swift creek subbasins, Little River Subbasin)*, Nash Co. (Moccasin and Turkey creek subbasins), Wilson Co. (Moccasin, Turkey, and Contentnea'creek subbasins), Jones Co. (Trent River Subbasin). Tar River Basin: Person Co. (Tar River Subbasin),, Granville Co. (Shelton and Cub creek subbasins, and Tar River Subbasin), Vance Co. (Ruin and Tabbs creek subbasins), Franklin Co. (Sandy, Fox, and Crooked creek subbasins), Nash Co. (Stony and Swift creek subbasins, Tar River Subbasin), Warren Co.