Description: English: Northern Dusky Salamander found along the Ironworks Creek in Bucks County, Pennsylvania. Date: 16 November 2017. Source: Own work. Author: Entobill92.
This image (or all images in this category/page) is very small, unfixably too light/dark, or may not adequately illustrate the subject of the image. If a higher-quality image is available please consider replacing this one; otherwise, a replacement under a free license should be found or provided. Please see Category:Image cleanup templates for templates used to mark images that only need a clean-up. For more help, see Commons:Media for cleanup#Low quality images. Description: English: Northern dusky salamander (Desmognathus fuscus) in the Shennandoah National Park, Page County, Virginia. Date: 2004. Source: http://co.water.usgs.gov/armi/html/photo30.html USGS Amphibian Research and Monitoring Initiative (ARMI). Author: Karen C. Rice.
Description: English: Head of adult Desmognathus fuscus showing external naris and nasolabial groove. f, crescentic fold; gr, nasolabial groove; grl, labial (horizontal) groove; nl1 and nl2, orifices of first and second nasolabial glands. Other orifices may be seen along the mesial side of the naso-labial groove and along the horizontal groove. Date: 1906. Source: Whipple, Inez L. (1906). "The naso-labial groove of lungless salamanders". Biological Bulletin 11: 1-26. Author: Inez Whipple Wilder (1871–1929).