The Retz Formation is a geologic formation in Austria. It preserves fossils of Metaxytherium krahuletzi, dated to the Burdigalian stage of the Miocene period.Retz Formation at Fossilworks.org
See also List of fossiliferous stratigraphic units in Austria
References
Further reading D. P. Domning and P. Pervesler. 2001. The osteology and relationships of Metaxytherium krahuletzi Deperet, 1895 (Mammalia, Sirenia). Abhandlungen der Senckenbergischen Naturforschenden Gesellschaft Frankfurt am Main 553:1-89