8.9" Cruziana (Fossil Trilobite Trackway) Plate - Morocco

This is a plate of fossil trackways (cruziana) of arthropods, in this case likely trilobites, collected near Erfoud, Morocco. The two rows of evenly spaced lines show where the trilobite's legs would push up the muddy sea floor, leaving tracks similar to the way a tire leaves tracks in the mud. The cruziana measures 7.7" long through the center of the plate, and is beautifully preserved on a thick slab of mudstone. The plate also contains unusual circular ridges: these could be burrows or tracks of another arthropod. These trackways would be Ordovician in age, or approximately 450 million years old.

Comes with an acrylic-metal display stand.