Here is a equivalent of the famous Rokycany Trilobite concretions from Morocco with lacoparia cf zippei..
This Trilobite concretion shows even on the outside complete trilobites.
The largest Placoparia measures about 20 mm.
|Region Alnif, Marocco|
|Size Concretion:||about 64 x 56 mm|
|Age:||Ordovician, Llandeilo,Jebel Bani Member (About. 464 Mill. Years)|