Trilobites of this genus have slightly convex exoskeletons with an average length of 4–7 cm. The cephalon is semicircular or parabolic.
This fellow has lost his distinctive tail spine that is the signature characteristic of this genus.
Trilobites — in all their many wonderful forms — lived in our ancient oceans for more than 270 million years. The last of their lineage went extinct at the end of the Permian, 252 million years ago.
