Fossil Sponge undeterminedOrdovician TremadocFezouata shaleZagoraMoroccoFossil Sponge Pirania? Fezouata undetermined OrdovicianSKU: TDI21550,00 €PriceOut of Stocktechnical data:size: 9 cm x 7,5 cm retsoration: No restoration Preparator: Di Silvestro Gianpaolo The Upper and Lower Fezouata formations of Morocco are Burgess shale-type deposits dating to the Lower Ordovician. It is a well known important Ordovician lagerstätte and it has an exceptional fossil preservation.