Reedops deckeri is one of the two least common phacopid trilobites (Order: Phacopida; Suborder: Phacopina; Superfamily: Phacopoidea; Family: Phacopidae) occuring in the Lower Devonian strata of Oklahoma. This specimen is very large for the species. This example has been meticulously prepared with modern equipment. It is mounted in an interesting life-like manner. Note the superb schizochroal compound eyes for which phacopid trilobites are famous.