Fossil specimen of the stromatoporoid *Stromatopora* sp. from the Silurian Lilley Dolomite Highland County, Ohio (T-261/PRI 43408). Specimen is from the teaching collection of the [Paleontological Research Institution](http://www.priweb.org), Ithaca, New York. Longest dimension of specimen is approximately 13 cm. Model by Emily Hauf.