Korn, Klug & Reisdorf, 2000, p.72:

Jebel Ouaoufilal West (8 km north-northwest of Taouz): Further towards the East, the crinoid limestone unit shows
a thickness of 3 metres.  The following debrite horizon closely resembles the one at El Atrous East. After two
metres of grey shales, the Gonioclymenia Limestone is exposed.