The ancestral origin of the North American unionidae, or fresh-water mussels The ancestral origin of the North American unionidae, or fresh-water musselsv. 48No. 775–88White, Charles A. 1907. "The ancestral origin of the North American unionidae, or fresh-water mussels." Smithsonian Miscellaneous Collections, 48, (7) 75–88.More...ID: 91084Type: articleKeywords: USNM; NMNH