Keywords: PermianOstracod.jpg en Cross-section view of an ostracod from the Permian of Texas Valera Formation Artinskian ; thin-section own Wilson44691 2010-06-29 Photograph taken by Mark A Wilson Department of Geology The College of Wooster http //www3 wooster edu/geology/MWilson html Unidentified Ostracoda Permian Animalia Permian fossils |