Fossils have been found in the Bayin-Gobi Formation in what is now China. The type species, Penelopognathus weishampeli, named after David Weishampel, was described by Godefroit, Li, and Shang in 2005, based on fragmentary jaw fossils.
Fossils have been discovered in the Bayin-Gobi Formation, which is now located in China. The type species, Penelopognathus weishampeli, named after David Weishampel, was introduced by Godefroit, Li, and Shang in 2005 based on incomplete jaw fossils.