Close to Orahovica, a researchers-group discovered limestone and dolomites from the Middle Triassic era (237–246 million years ago) deposited in the shallow and warm water of the historic Tethys Ocean ―incredible evidence of previous marine life surrounding the Papuk Mountains. This Tethys Ocean once stretched across continents and was a tropical sea, with a flourishing marine ecosystem. One of its inhabitants was a small mollusk with a ribbed and spiral shell: an ammonite. Fossils of this mollusk helped date those limestone and dolomite discoveries.
Part of: Geosites in Papuk