A Prehysteric performing JurasicBeat in battle.
JurasicBeat (原始のリズム , Genshi no rizumu, lit. Primitive Rhythm?) is a Red Enemy Tech used by Prehysterics in Chrono Cross. This tech enables Prehysterics to chant a primitive song and perform ritualistic dance to confuse one of its enemies.
The Prehysteric in question will start off by shaking its skull-staff and shield as it chants and twirls round and round to the sound of drums being beaten. Red-colored rings of energy form on the rings of the staff repeatedly as the Prehysteric performs its little ritual. It will finish off the move with a final shriek, whereupon the camera will shift its focus onto the foes. Red rings of energy are observed to swirl around an enemy's head momentarily before disappearing.
The name of this tech, JurasicBeat, appears to be a misspelling of the phrase, Jurassic Beat.