The use of lanceolate-shaped point decreased temporarily during the period in which the microlith was widely used, but it reached its peaked around the time when the Jomon were began to be developed.
槍先形尖頭器は、細石器が多用された時期には一時的に減少傾向をみせるが、縄文土器が出現する前後に最盛期をむかえる。