This mentioned taxonomy is an attempt to make an conclusive assignment from the different classifications of various scientists. Because the taxonomy may change due to the latest investigative methods and other findings, our map is a guide only.
Corresponding author (Name, Year)
Ref.: T. W. Amsden. 1958. Stratigraphy and paleontology of the Hunton Group in the Arbuckle Mountain Region. Part II - Haragan articulate brachiopods. Oklahoma Geological Survey Bulletin 78:1-144
Ref.: J. Hall and J. M. Clarke. 1892. An introduction to the study of the genera of Paleozoic Brachiopoda. Natural History of New York, New York State Geological Survey 8:1-367
T. W. Amsden, 1958 - Stratigraphy and paleontology of the Hunton Group in the Arbuckle Mountain Region. Part II - Haragan articulate brachiopods - Oklahoma Geological Survey Bulletin (78), 1-144 (serial monograph, English)