Netherlands: Posidonia shale, Lithuania: Ciechocinek formation, Poland: Ciechocinek formation, Russia: Ciechocinek formation, Germany: Posidonia shale, Ciechocinek formation, Austria: Posidonia shale, Switzerland: Insektenmergel formation, Posidonia shale, Denmark: Bagå formation, Rønne formation, Hasle formation, Sorthat formation, Pakistan: Nikanai Ghar formation, Samanasuk formation, Shinwari formation, Kyrgyzstan: Dzhil formation