Photography of fossils at Pliocene marker levels with Turritella, Apical side down, and umbilical side up. A1-A2, Turritella aspera; A3, Genus Scala. White bar of 1 cm.

The specimens were found in four geographically close levels: Ighil Ou Dardour, Ait Taoukt, Iligh, and Tildi. They are always reworked in yellow sandstone molasse sediments, accompanied by the previously mentioned Turritella aspera这些标本发现于四个地理上邻近的地层层位：伊吉尔·乌·达尔杜尔（Ighil Ou Dardour）、艾特·陶克特（Ait Taoukt）、伊利格（Iligh）以及蒂尔迪（Tildi）。它们均产于经再改造的黄色砂岩磨拉石沉积物中，伴生有此前提及的粗糙梯螺（Turritella aspera）。