Bois d’ Arc Formation Acanthopyge consanguinea (The Trilobite Formally Known As Bug X) Species: Acanthopyge consanguinea Order: Lichida Superfamily: Lichoidea Family: Lichidae Age: Lower Devonian Formation: Bois d' Arc Formation Location: Coal County, Oklahoma - Black Cat Mountain Quarry Species: Cordania wessmani Order: Proetida Superfamily: Aulacopleuroidea Family: Brachymetopidae Age: Lower Devonian Formation: Bois d' Arc Formation Location: Coal County, Oklahoma Ref: Whittington, H.B. 1960. Cordania and Other Trilobites From the Lower and Middle Devonian. Journal of Paleontology, 34:405 420 Haragan Formation Species: Breviscutellum sp. Order: Corynexochida Superfamily: Styginidae Family: Styginidae Age: Lower Devonian Formation: Haragan Formation Location: Coal County, Oklahoma Species: Ceratonurus sp. Order: Lichida Superfamily: Odontopleuroidea Family: Odontopleuridae Age: Lower Devonian Formation: Haragan Formation Location: Coal County, Oklahoma Species: Cordania falcata Order: Proetida Superfamily: Aulacopleuroidea Family: Brachymetopidae Formation: Haragan Age: Lower Devonian Formation Location: Coal County, Oklahoma Ref: Whittington, H.B. 1960. Cordania and Other Trilobites From the Lower and Middle Devonian. Journal of Paleontology, 34:405-420 Species: Cyphaspis carrolli Order: Proetida Superfamily: Aulacopleuroidea Family: Aulacopleuridae Formation: Haragan Age: Lower Devonian Formation Location: Coal County, Oklahoma Ref: Adrain, J. M. and G. J. Gloc. 1997. Lower Devonian Aulacopleuroidean Trilobites From Oklahoma. Journal of Paleontology, 71(4):703-712. Species: Dicranurus hamatus Order: Lichida Superfamily: Odontopleuroidea Family: Odontopleuridae Age: Lower Devonian Formation: Haragan Formation Location: Coal County, Oklahoma Species: Huntonia huntonensis Order: Phacopida Superfamily: Dalmanitoidea Family: Dalmanitidae Age: Lower Devonian Formation: Haragan Formation Location: Coal County, Oklahoma Species: Huntonia lingulifer Order: Phacopida Superfamily: Dalmanitoidea Family: Dalmanitidae Age: Lower Devonian Formation: Haragan Formation Location: Coal County, Oklahoma Species: Kettneraspis williamsi Order: Lichida Superfamily: Odontopleuroidea Family: Odontopleuridae Age: Lower Devonian Formation: Haragan Formation Location: Coal County, Oklahoma Species: Laethoprusia sp. Order: Lichida Superfamily: Odontopleuroidea Family: Odontopleuridae Age: Lower Devonian Formation: Haragan Formation Location: Coal County, Oklahoma - Black Cat Mountain Quarry Species: Paciphacops campbelli Order: Phacopida Superfamily: Phacopoidea Family: Phacopidae Age: Lower Devonian Formation: Haragan Formation Location: Coal County, Oklahoma Species: Reedops deckeri Order: Phacopida Superfamily: Phacopoidea Family: Phacopidae Age: Lower Devonian Formation: Haragan Formation Location: Coal County, Oklahoma Blind trilobites called "Cryptolithus". Viola Group, Ordovician age Isotelus from the Viola Group .