The Chemnitz petrified forest is a petrified forest in Chemnitz, Germany, that is part of the Early Permian Leukersdorf Formation. Most of the trunks are exhibited in the Museum of Natural History in Chemnitz inside of Kulturkaufhaus Tietz, including slices of trunks with polished edges. A small collection can be seen also on Zeißstraße (Hilbersdorf, 1911). From April 4, 2008, to Fall 2011, an excavation in Hilbersdorf was held to find and research more trunks. Their researchers discovered, amongst others, Arthropitys bistriata, a type of Calamites, giant horsetails that are ancestors of modern horsetails, found on this location with never seen multiple branches. Many more plants and animals from this excavation are still in an ongoing research. This exceptional find received the 2010 Fossil of the Year award of the German Paleontological Society. It was integrated into the permanent exhibition.