Fossil specimen of the goniatite ammonoid *Agathiceras ciscoense* from the Pennsylvanian Wayland Shale of Brown County, Texas (PRI 76762). Specimen is from the collections of the [Paleontological Research Institution](http://www.priweb.org), Ithaca, New York. Maximum diameter of specimen is approximately 3.5 cm. Model by Emily Hauf.