sentences:  In the Tingutinguti stream section, the "Indotrigonia africana" Member exhibits several up to thick, poorly sorted, conglomeratic sandstone beds.They contain mud clasts, reworked concretions and/or accumulations of thick-shelled bivalves (mainly "Indotrigonia africana" and "Seebachia janenschi"), and exhibit megaripple surfaces.These conglomeratic sandstone layers are interpreted as storm deposits.