Morocco: Achguig formation, Belgium: Grands Breux formation, Germany: Etroeungt formation, Velbert formation, Wallersheim formation, Czechia: Líšeň formation, Andělská Hora formation, Ponikev formation, Moravský Beroun formation, Macocha formation, Jesenec formation, Spain: Fueyo formation, Ermita formation, Nocedo formation, Candás formation, France: Beaulieu formation, Nismes formation, United States of America: Chattanooga shale, Louisiana limestone, Hatch siltstone formation, West River shale, Genundewa limestone, Penn Yan formation, Geneseo shale, Nunda formation, Ithaca formation, Uzbekistan: Akbasai formation, Pakistan: Nowshera formation, Australia: Mandagery formation, Gogo formation