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.
F. A. Sundberg, 2011 - Detailed trilobite biostratigraphy across the proposed GSSP for stage 5 ("Middle Cambrian" boundary) at the Wuliu-Zengjiayan section, Guizhou, China - Bulletin of Geosciences (86), 423-464 (journal article, English)
F. A. Sundberg, 2003 - Trilobites of the lower Middle Cambrian Poliella denticulata biozone (new) of southeastern Nevada - Journal of Paleontology (77), 331-359 (journal article, )
J. J. Sepkoski, Jr., 2002 - A compendium of fossil marine animal genera - Bulletins of American Paleontology (363), 1-560 (serial monograph, English)
F. A. Sundberg, 1997 - Oryctocephalids (Corynexochida: Trilobita) of the Lower-Middle Cambrian boundary interval from California and Nevada - Journal of Paleontology (77), 1065-1090 (journal article, English)
W. T. Zhang, 1980 - Cambrian trilobite faunas of southwestern China - Palaeontologia Sinica, new series B (16), 1-497 (serial monograph, Chinese)
A. R. Palmer, 1979 - Physical Stratigraphy and Trilobite Biostratigraphy of the Carrara Formation (Lower and Middle Cambrian) in the Southern Great Basin - United States Geological Survey Professional Paper (1047), 1-131 (journal article, English)
C. E. Resser, 1938 - Middle Cambrian fossils from Pend Oreille Lake, Idaho - Smithsonian Miscellaneous Collections (97), 1-12 (serial monograph, English)