Trilobites
Order Lichida, Superfamily Lichoidea, Family Lichidae
Geologic Age: Silurian
Trilobite is 135 mm long
Rochester Shale Formation, Middleport, New York
Remarks: Arctinurus boltoni is an American trilobite icon, sometimes called
the emperor of North American trilobites. Particularly note how
is the entire exeskeleton is covered with tubercles,
even the spines, a characteristic often observed in lichid trilobites.
Also see: American Trilobites
