Japanese artefact types

thumb|right|Jōmon period#Late and Final Jōmon (2470–500 BC)|Late and Final Jōmon sekibō, here labelled "phallic stones" ([[The Museum, Archaeological Institute of Kashihara, Nara Prefecture)]] , sometimes translated as "stone rods", are a type of archaeological artefact from Jōmon Japan, with examples known also from the Yayoi period.