Trilobita - Phacopida - Pterygometopidae

Alternative combination: Calliops buttsi

Full reference: B. N. Cooper. 1953. Trilobites from the Lower Champlainian formations of the Appalachian Valley. Geological Society of America Memoir 55:1-69

Belongs to Eomonorachus according to R. Ludvigsen and B. D. E. Chatterton 1982

See also Cooper 1953

Sister taxa: Eomonorachus divaricatus, Eomonorachus goodridgii, Eomonorachus intermedius

Type specimen: USNM 97368, a cephalon/head (cranidium)

Distribution: there are no occurrences of Eomonorachus buttsi in the database

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Specimen images are retrieved through the ePANDDA API.