Here is a very detailed preserved trilobite. The fossil shows remarkable fine preserved surface of the carapace. On the rachis is a fairly visible line of median nodes. It seems that this nodes are very variable on "Metacanthina issoumourensis". Some specimens does show this tuberculation stronger, some nearly not. | |||
Location: | Jbel Issoumour, Maider Reg., Morocco | ||
Size: | about 57 mm long | ||
Age: | Lower Devonian , Pragian, Ihandar Formation (about 400 mill. y.o.) |