Trilobites
Order Ptychopariida Suborder Ptychopariina, Superfamily
Ptychparioidea,
Family Proasaphiscidae
Geologic Age: Middle Cambrian
Trilobite 12 mm long
E2m Horizon, Saluda River, Anabar Region, Siberia, Russia
Comments: Note the prominent crescent-shaped holochroal
eye ridges
characteristic of many ptychopariids.
Also see: Russian Trilobites
