Region 9, Sierra Madre Oriental

Satan's skeleton revealed: a tomographic and comparative osteology of Satan eurystomus, the subterranean Widemouth Blindcat (Siluriformes, Ictaluridae)

“…The eastern boundary of the system in the study region is the "bad-water line", or the line of 1,000 mg/l line of total dissolved solids (TDS) concentration (Maclay and others, 1980). The bad water line has been traced south into Mexico and bounds the aquifer system to the east of Serranía del Burro and Peyotes anticline in Mexico (Lesser and Lesser, 1988). Location of the Edwards-Trinity aquifer…”