20924 - Top Rare 2.50 Inch Metacanthina barrandea Middle Devonian Trilobite Walliserops skull and jaw

skull and jaw

Normally it is the species Otodus obliquus

from the Upper Cretaceous of Belgium

and clusters of refractory materials that often form during the discharge phase of lightning strikes propagating into silica-rich quartzose sand

They have been recorded from every continent and many are used as zonal or index fossils

20924 - Top Rare 2.50 Inch Metacanthina barrandea Middle Devonian Trilobite Walliserops skull and jawRare species, from a location that has provided very few specimens. They were extracted during the construction of a highway near Ben Slimane. In the same matrix you can also see a coral. Nice eyes facets.