NAS - Nonindigenous Aquatic Species
Johnson, R.I. 1999. Unionidae of the Rio Grande (Rio Bravo Del Norte) system of Texas and Mexico. Occasional Papers on Mollusks 6(77):1-67. https://www.biodiversitylibrary.org/page/54136711#page/1/mode/1up.
Reference Number: 44851 Type: Journal Article Author: Johnson, R.I. Date (year): 1999 Article Title:Unionidae of the Rio Grande (Rio Bravo Del Norte) system of Texas and Mexico Journal Name: Occasional Papers on Mollusks Volume: 6 Issue: 77 Pages: 1-67 URL: https://www.biodiversitylibrary.org/page/54136711#page/1/mode/1up Keywords: unionidae, distribution, Pyganodon grandis
Pyganodon grandis TX - El Paso, Cement Lakee, El Tora Cement Agency TX - Billingslea Draw, near Toyah TX - Canals from Rio Grande TX - Lake Granjeno
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Citation information: U.S. Geological Survey. [2025]. Nonindigenous Aquatic Species Database. Gainesville, Florida. Accessed [12/12/2025].
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