Fungus on standing dead tree

This hard-textured fungus is visible on this dead tree.  I've seen this sort of fungus on trees elsewhere in Tippecanoe County.  This tree is along the trail on the east-facing slope leading to the lookout point over the Wildcat Creek.  I'm going to guess that it is in the Xylariaceae family of ascomycete fungus.  It could be a Hypoxylon fungus.  Photo taken January 28, 2015.

http://www.forestryimages.org/browse/subthumb.cfm?sub=564

http://en.wikipedia.org/wiki/Xylariaceae