Grimmi Lower Ordovician, Fezouata formation Draa Valley, Morocco This is an extremely rare and early Harpidae from the Fezouata shales. The ornimenation to the head shield is extremely good as is the preservation throughout. Please see the tape measure for dimensions. Grimmi - Ordovician Trilobite - Fezouata, Morocco.This is an extremely rare and early Harpidae from the Fezouata shales. A Note on all Moroccan Trilobites. Trilobites from this age are found within clasts and as such have no bedding plane, therefore in order to find the trilobite the rock is broken and the cross section of the trilobite revealed. The rock is then glued back together and the specimen prepared. 99% of all Moroccan trilobites will have a break line through the specimen, it is the only way they are found. This may involve traveling to various countries but ensures that the quality is of the best standard. The Kempton rock and gem show, again held 4 times per year, as well as smaller shows around the county. This is by appointment only. If you do not see the fossil that you are after then please let me know as what you see here is a fraction of what i have available. Auctiva offers Free Image Hosting and Editing.