Howells Freshwater Mussels App

MEXICAN FAWNSFOOT (Truncilla cognata)Threatened (legally) TPWD – Proposed USFWS• Endemic to the Rio Grande, including Texas and Mexican tributaries.• Found west of Del Rio in 1972, but since then known only from < 20living or recently dead individuals found in a short stretch of theRio Grande in Webb County, Texas.– This area is heavily impacted by NAFTA and Homeland Security activity& general degradation of the Rio Grande, with a proposed reservoirbeing considered that would eliminate most or all of the remainingsurvivors.