found: ITIS, July 11, 2003(Family Plethodontidae Gray, 1850 -- lungless salamanders)
found: Standard common and current scientific names for North American amphibians, turtles, reptiles & crocodilians, via WWW, July 11, 2003(Plethodontidae - Lungless Salamanders)
found: AmphibiaWeb, July 11, 2003(Plethodontidae, lungless salamanders)
found: Amphibian species of the world, via WWW, July 11, 2003(Family Plethodontidae Gray, 1850. English name: Lungless Salamanders)
found: The tree of life, via WWW, July 11, 2003(Plethodontidae, Lungless Salamanders; plethodontids; plethodontid salamanders)