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| San Marcos salamander ： ウィキペディア英語版 |
San Marcos salamander
The San Marcos salamander (''Eurycea nana'') is a small species of aquatic, lungless salamander native to the United States, endemic to Spring Lake and a small region of the headwaters of the San Marcos River near Aquarena Springs, in Hays County, Texas. It is one to two inches long, with a slender body and external gills, and is a reddish-brown in color.
== Conservation status ==
The San Marcos salamander has been federally listed as a threatened species since 1980. Due to its extremely limited geographic range, it is threatened by a number of things, but primarily from the contamination of ground water sources and heavy dependence of Central Texas cities upon the Edwards Aquifer for water.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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