Arcidens confragosus, Specimen #1642 Hammontree, Sarah Mabe, Jeffery Perry, Heather Pulliam, Lauren Elm Fork Natural Heritage Museum Say 2011-06-18 No Language One preserved mussel specimen including the right valve only. The specimen exhibits a quadrate shape; moderately thick shell; white internal coloring; dark brown external coloring; external sculpturing in the form of ridges. Collected in the Guadalupe basin. The specimen measures between 0 - 60 mm in length and was assessed to be long dead when collected. Freshwater mussels -- Texas. Zoological specimens -- Texas. shells Arcidens confragosus rock pocketbook San Antonio River Guadalupe basin United States - Texas - Goliad County Specimen One mussel shell (1 valve) : white and dark brown ; 0 - 60 mm Image local-cont-no: Catalog Number: 00001642 http://digital.library.unt.edu/ark:/67531/metadc38922/ ark: ark:/67531/metadc38922