Originally described in 1871 by Emanuel Bunzel,[3] after remains uncovered by Eduard Suess and Ferdinand Stoliczka in 1855 from the Gute Hoffnung coal mine at Muthmannsdorf near Wiener Neustadt in Austria. Many species have been referred to Struthiosaurus, most based on very fragmentary and nondiagnostic material. Three valid species are currently recognized by paleontologists: S. austriacus Bunzel, 1871, based on holotype PIWU 2349/6; S. transylvanicus Nopcsa, 1915, based on BMNH R4966, a skull and partial skeleton from Romania;[4] and S. languedocensis Garcia and Pereda-Suberbiola, 2003, based on UM2 OLV-D50 A–G CV, a partial skeleton found in 1998 in France.[5] Along with Hungarosaurus Ösi, 2005, Struthiosaurus is currently one of only two valid members of the Ankylosauria known from Eu