Babcock, L. E. & Robison, R. A. 1988. Taxonomy and paleobiology of some Middle Cambrian Scenella (Cnidaria) and Hyolithids (Mollusca) from western North America. The University of Kansas Paleontological Contributions, Paper 121: 1-22.
Briggs, D. E. G. 1976. The artrhopod Branchiocaris n. gen., Middle Cambrian, Burgess Shale, British Columbia. Geological Survey of Canada Bulletin, 264: 29 pp.
Briggs, D. E. G., Lieberman, B. S., Halgedahl, S. L. & Jarrard, R. D. 2005. A new metazoan from the Middle Cambrian of Utah and the nature of the Vetulicolia. Palaeontology, 48(4): 681-686. <Download PDF>
Briggs, D. E. G, Lieberman, B. S., Hendricks, J. R., Halgedahl, S. L., & Jarrard, R. D. 2008. Middle Cambrian arthropods from Utah. Journal of Paleontology, 82(2): 238-254. <Download PDF>
Briggs, D. E. G. & Robison, R. A. 1984. Exceptionally preserved nontrilobite arthropods and Anomalocaris from the Middle Cambrian of Utah. The University of Kansas Paleontological Contributions, Paper 111: 1-24.
Brooks, H. K. & Caster, K. E. 1956. Pseudoarctolepis sharpi, n. gen., n. sp. (Phyllocarida), from the Wheeler Shale (Middle Cambrian) of Utah. Journal of Paleontology, 30: 9-14.
Brusca, R. C. & Brusca, G. J. 2003. Invertebrates, Second Edition. Sinauer Associates, Inc., MA, 936 p.
Cartwright, P., Halgedahl, S. L., Hendricks, J. R., Jarrard, R. D., Marques, A. C., Collins, A. G. & Lieberman, B. S. 2007. Exceptionally preserved jellyfishes from the Middle Cambrian. PLoS ONE 2(10): e1121. doi:10.1371/journal.pone.0001121. <Download PDF>
Conway Morris, S. 1977. Fossil priapulid worms. Special Papers in Palaeontology, 20: 1-95.
Conway Morris, S. & Robison, R. A. 1982. The enigmatic medusoid Peytoia and a comparison of some Cambrian biotas. Journal of Paleontology, 56(1): 116-122.
Conway Morris, S. & Robison, R. A. 1986. Middle Cambrian priapulids and other soft-bodied fossils from Utah and Spain. The University of Kansas Paleontological Contributions, Paper 117: 1-22.
Conway Morris, S. & Robison, R. A. 1988. More soft-bodied animals and algae from the Middle Cambrian of Utah and British Columbia. The University of Kansas Paleontological Contributions, Paper 122: 1-48.
Hendricks, J. R. & Lieberman, B. S. 2007. Biogeography and the Cambrian radiation of arachnomorph arthropods. Memoirs of the Association of Australasian Palaeontologists, 34: 29-40. <Download PDF>
Hendricks, J. R. & Lieberman, B. S. 2008 (in press). New phylogenetic insights into the Cambrian radiation of arachnomorph arthropods. Journal of Paleontology, 82(3): 585-594.
Hendricks, J. R., Lieberman, B. S. & Stigall, A. L. In Revision. Using GIS to study palaeobiogeographic and macroevolutionary patterns in soft-bodied Cambrian arthropods. Palaeogeography, Palaeoclimatology, Palaeoecology.
Howell, B. F. 1946. New names for homonym species of Cambrian Hyolithidae. Journal of Paleontology, 20: 71.
Meek, F. B. 1870. Descriptions of fossils collected by the U. S. Geological Survey, under charge of Clarence King. Proceedings of the Academy of Natural Sciences of Philadelphia, 2nd Series, 14: 56-64.
Ramskold, L. & Chen, J.-Y. 1998. Cambrian lobopodians: morphology and phylogeny. Pp. 107-150 in Edgecombe, G. (ed.), Arthropod Fossil and Phylogeny. Columbia University Press, New York.
Resser, C.E. 1929. New Lower and Middle Cambrian Crustacea. Proceedings of the United States National Museum, 76(9):1-18.
Resser, C. E. 1931. A new Middle Cambrian merostome crustacean. Proceedings of the United States National Museum, 79(33): 1-4.
Resser, C. E. 1938. Middle Cambrian fossils from Pend Oreille Lake, Idaho. Smithsonian Miscellaneous Collections, 97(3): 1-12.
Resser, C. E. 1939. The Spence Shale and its fauna. Smithsonian Miscellaneous Collections, 97(12): 1-29.
Robison, R. A. 1965. Middle Cambrian eocrinoids from western North America. Journal of Paleontology, 39(3): 355-364.
Robison, R. A. 1985. Affinities of Aysheaia (Onychophora), with description of a new Cambrian species. Journal of Paleontology, 59(1): 226-235.
Robison, R. A. 1990. Earliest-known uniramous arthropod. Nature, 343: 163-164.
Robison, R. A. & Richards, B. C. 1981. Larger bivalve arthropods from the Middle Cambrian of Utah. The University of Kansas Paleontological Contributions, Paper 106: 1-28.
Robison, R. A. & Wiley, E. O. 1995. A new arthropod, Meristosoma: more fallout from the Cambrian radiation. Journal of Paleontology, 69(3): 447-459.
Rolfe, W. D. I. 1962. Two new arthropod carapaces from the Burgess Shale (Middle Cambrian) of Canada. Brevoria, 160: 1-9.
Simonetta, A. M. 1970. Studies on non-trilobite arthropods from the Burgess Shale (Middle Cambrian). Palaeontographica Italica, 66: 35-45.
Walcott, C. D. 1886. Second contribution to the studies on the Cambrian faunas of North America. United States Geological Survey Bulletin, 30: 369 p.
Walcott, C. D. 1890. The fauna of the Lower Cambrian or Olenellus Zone. United States Geological Survey Annual Report, 10: 509-763.
Walcott, C. D. 1911a. Middle Cambrian Merostomata. Cambrian geology and paleontology II. Nomenclature of some Cambrian Cordilleran formations. Smithsonian Miscellaneous Collections, 57: 17-40.
Walcott, C. D. 1911b. Middle Cambrian holothurians and medusae. Smithsonian Miscellaneous Collections, 57: 41-68.
Walcott, C. D. 1911c. Middle Cambrian annelids. Smithsonian Miscellaneous Collections, 57: 109-144.
Walcott, C. D. 1912. Cambrian geology and paleontology II; Middle Cambrian Branchiopoda, Malacostraca, Trilobita, and Merostomata. Smithsonian Miscellaneous Collections, 57(6): 145-228.
Walcott, C. D. 1919. Cambrian geology and paleontology IV, number 5: Middle Cambrian algae. Smithsonian Miscellaneous Collections, 67(5): 217-260.
Walcott, C. D. 1931. Addenda to descriptions of Burgess shale fossils. Smithsonian Miscellaneous Collections, 85(3): 1-46.
Whiteaves, J. F. 1892. Description of a new genus and species of phyllocarid crustacea from the Middle Cambrian of Mount Stephen. B. C. Candadian Record of Science, 5: 205-208.