Aulacopleura konincki trilobite specimen, a fossil from the the Silurian period dating it to between 433 to 420 million years old, this trilobite belongs to the aulacopleura genus, a group defined by characteristics such as a semi-circular cephalon, which unlike many species, doesn't have any spines growing outward from the ends or are just very small. The eyes of this genus are often very small, sometimes barely visible, so far the genus only comprises of 4 species. This fossil is of a aulacopleura konincki, found only in the Czech Republic (formerly Czechoslovakia). It was found in the Liten formation, which is apart of the Upper Wenlock series dating to the Devonian period. The fossil is mostly limestone matrix, dark in colour as expected of Wenlock limestone but contains 4 identifiable specimens of the species (with possible fragments of others). the whole piece measures 100 x 70 mm with the specimens being around 12 mm in length.