Anstey, R. L., and Pachut, J. F. 1992. Cladogenesis and speciation in early bryozoans. Geological Society of America Abstracts with Programs 24:A139.
Bambach, R. K., and Sepkoski, J. J. Jr. 1992. Historical evolutionary information in the traditional Linnean hierarchy. P. 16in Lidgard, S. and Crane, P. R., eds. Fifth North American Paleontological Convention abstracts and program (Paleontological Society Special Publication No. 6). The University of Tennessee, Knoxville.
Breimer, A., and Macurda, D. B. Jr. 1972. The phylogeny of the fissiculate blastoids. Verhandelingen der Koninklijke Nederlandse Akademie van Wetenschappen, Afdeling Natuurkunde, Erste Reeks 26:1–390.
Briggs, D. E. G., Fortey, R. A., and Wills, M. A. 1992. Morphological disparity in the Cambrian. Science 256:1670–1673.
Broadhead, T. W. 1984. Macurdablastus, a middle Ordovician blastoid from the southern Appalachians. University of Kansas Paleontological Contributions, Paper 110:1–10.
Campbell, K. S. W., and Marshall, C. R. 1987. Rates of evolution among Palaeozoic echinoderms. Pp. 61–100in Campbell, K. S. W. and Day, M. F., eds. Rates of evolution. Allen and Unwin, London.
Cherry, L. M., Case, S. M., Kunkel, J. G., Wyles, J. S., and Wilson, A. C. 1982. Body shape metrics and organismal evolution. Evolution 36:914–933.
Compston, W., Williams, I. S., Kirschvink, J. L., Zichao, Z., and Guogan, M. 1992. Zircon U-Pb ages for the Early Cambrian timescale. Journal of the Geological Society, London 149:171–184.
Cooper, J. A., Jenkins, R. J. F., Compston, W., and Williams, I. S. 1992. Ion-probe zircon dating of a mid-Early Cambrian tuff in South Australia. Journal of the Geological Society, London 149:185–192.
Cowie, J. W., and Harland, W. B. 1989. Chronometry. Pp. 186–198in Cowie, J. W. and Brasier, M. D., eds. The Precambrian-Cambrian boundary. Clarendon, Oxford.
Efron, B. 1982. The jackknife, the bootstrap, and other resampling plans. Society for Industrial and Applied Mathematics, Philadelphia.
Eldredge, N., and Braniša, L. 1980. Calmoniid trilobites of the Lower Devonian Scaphiocoelia Zone of Bolivia, with remarks on related species. Bulletin, American Museum of Natural History 165:181–289.
Erwin, D. H. 1992. A preliminary classification of evolutionary radiations. Historical Biology 6:133–147.
Fisher, D. C. 1986. Progress in organismal design. Pp. 99–117in Raup, D. M. and Jablonski, D., eds. Patterns and processes in the history of life. Springer, Berlin.
Foote, M. 1988. Survivorship analysis of Cambrian and Ordovician trilobites. Paleobiology 14:258–271.
Foote, M. 1989. Perimeter-based Fourier analysis: a new morphometric method applied to the trilobite cranidium. Journal of Paleontology 63:880–885.
Foote, M. 1990. Nearest-neighbor analysis of trilobite morphospace. Systematic Zoology 39:371–382.
Foote, M. 1991a. Morphologic patterns of diversification: examples from trilobites. Palaeontology 34:461–485.
Foote, M. 1991b. Morphological and taxonomic diversity in a clade's history: the blastoid record and stochastic simulations. Contributions from the Museum of Paleontology, University of Michigan 28:101–140.
Foote, M. 1992a. Rarefaction analysis of morphological and taxonomic diversity. Paleobiology 18:1–16.
Foote, M. 1992b. Paleozoic record of morphological diversity in blastozoan echinoderms. Proceedings, National Academy of Sciences, USA 89:7325–7329.
Foote, M., and Gould, S. J. 1992. Cambrian and Recent morphological disparity. Science 258:1816.
Fortey, R. A. 1990. Ontogeny, hypostome attachment and trilobite classification. Palaeontology 33:529–576.
Fortey, R. A., and Chatterton, B. D. E. 1988. Classification of the trilobite suborder Asaphina. Palaeontology 31:165–222.
Fortey, R. A., and Owens, R. M. 1975. Proetida—a new order of trilobites. Fossils and Strata 4:227–239.
Fortey, R. A. 1990a. Trilobites. Pp. 121–142in McNamara, K. J., ed. Evolutionary trends. University of Arizona Press, Tucson.
Fortey, R. A. 1990b. Evolutionary radiations in the Trilobita. Pp. 139–164in Taylor, P. D. and Larwood, G. P., eds. Major evolutionary radiations. Clarendon, Oxford.
Fortey, R. A., and Whittington, H. B. 1989. The Trilobita as a natural group. Historical Biology 2:125–138.
Gilinsky, N. L., Gould, S. J., and German, R. Z. 1989. Asymmetries of clade shape and the direction of evolutionary time. Science 243:1613–1614.
Gould, S. J. 1989. Wonderful life: the Burgess Shale and the nature of history. Norton, New York.
Gould, S. J. 1991. The disparity of the Burgess Shale arthropod fauna and the limits of cladistic analysis: why we must strive to quantify morphospace. Paleobiology 17:411–423.
Gould, S. J., Gilinsky, N. L., and German, R. Z. 1987. Asymmetry of lineages and the direction of evolutionary time. Science 236:1437–1441.
Gould, S. J., Raup, D. M., Sepkoski, J. J. Jr., Schopf, T. J. M., and Simberloff, D. S. 1977. The shape of evolution: a comparison of real and random clades. Paleobiology 3:23–40.
Guensburg, T. E., and Sprinkle, J. 1992. Rise of echinoderms in the Paleozoic evolutionary fauna: significance of paleoenvironmental controls. Geology 20:407–410.
Hallam, A. 1973. Atlas of palaeobiogeography. Elsevier, New York.
Harland, W. B., Armstrong, R. L., Cox, A. V., Craig, L. E., Smith, A. G., and Smith, D. G. 1990. A geologic time scale 1989. Cambridge University Press, New York.
Harrington, H. J. et al. 1959. Systematic descriptions. Pp.O170–O539 in R. C. Moore, ed. Treatise on invertebrate paleontology, Part O, Arthropoda 1. The Geological Society of America and The University of Kansas Press, Boulder, Colo. and Lawrence, Kans.
Horowitz, A. S., Blakely, R. F., and Macurda, D. B. Jr. 1985. Taxonomic survivorship within the Blastoidea (Echinodermata). Journal of Paleontology 59:543–550.
Jablonski, D. 1986. Mass and background extinctions: the alternation of macroevolutionary regimes. Science 231:129–133.
Kitchell, J. A., and MacLeod, N. L. 1988. Macroevolutionary interpretations of symmetry and synchroneity in the fossil record. Science 240:1190–1193.
Kitchell, J. A. 1989. Asymmetries of clade shape and the direction of evolutionary time. Science 243:1614–1615.
Kitchell, J. A., Clark, D. L., and Gombos, A. M. Jr. 1986. Biological selectivity and extinction: a link between background and mass extinction. Palaios 1:504–511.
Knoll, A. H., and Walter, M. R. 1992. Latest Proterozoic stratigraphy and Earth history. Nature 356:673–678.
Lane, P. D., and Thomas, A. T. 1983. A review of the trilobite suborder Scutelluina. Special Papers in Palaeontology 30:141–160.
Lochman, C. 1956. The evolution of some upper Cambrian and Lower Ordovician trilobite families. Journal of Paleontology 30:445–462.
Müller, A. H. 1955. Der Grossablauf der stammesgeschichtlichen Entwicklung. Fischer, Jena.
Müller, A. H. 1970. Eine phylogenetische Regel. Monatsberichte der deutschen Akademie der Wissenschaften zu Berlin 12:521–531.
Müller, A. H. 1974. Regelhafte und systemgebundene Verlagerung der Formenmaxima sich stammesgeschictlich ablösender gleichrangiger Taxa, zweiter Nachtrag. Biologisches Zentralblatt 93:265–288.
Pearson, E. S. 1926. Further note on the distribution of range in samples taken from a normal population. Biometrika 18:173–194.
Raup, D. M. 1966. Geometric analysis of shell coiling: general problems. Journal of Paleontology 40:1178–1190.
Raup, D. M. 1972. Taxonomic diversity during the Phanerozoic. Science 177:1065–1071.
Raup, D. M. 1976. Species diversity in the Phanerozoic: a tabulation. Paleobiology 2:279–288.
Raup, D. M. 1978. Approaches to the extinction problem. Journal of Paleontology 52:517–523.
Raup, D. M. 1992. Large-body impact and extinction in the Phanerozoic. Paleobiology 18:80–88.
Raup, D. M., and Gould, S. J. 1974. Stochastic simulation and evolution of morphology—towards a nomothetic paleontology. Systematic Zoology 23:305–322.
Raup, D. M., Gould, S. J., Schopf, T. J. M., and Simberloff, D. S. 1973. Stochastic models of phylogeny and the evolution of diversity. Journal of Geology 81:525–542.
Romer, A. S. 1949. Time series and trends in animal evolution. Pp. 103–120in Jepsen, G. L., Mayr, E., and Simpson, G. G., eds. Genetics, paleontology, and evolution. Princeton University Press, Princeton, N.J.
Saunders, W. B., and Swan, A. R. H. 1984. Morphology and morphologic diversity of mid-Carboniferous (Namurian) ammonoids in time and space. Paleobiology 10:195–228.
Sepkoski, J. J. Jr., Bambach, R. K., Raup, D. M., and Valentine, J. W. 1981. Phanerozoic marine diversity and the fossil record. Nature 293:435–437.
Simpson, G. G. 1953. The major features of evolution. Columbia University Press, New York.
Sloan, R. E. 1991. A chronology of North American Ordovician trilobite genera. Geological Society of Canada, Paper 90–9:165–177.
Sloss, L. L. 1950. Rates of evolution. Journal of Paleontology 24:131–139.
Sokal, R. R., and Rohlf, F. J. 1981. Biometry, 2d ed. W. H. Freeman, San Francisco.
Sprinkle, J. 1980. Early diversification. Pp. 86–91in Broadhead, T. W. and Waters, J. A., eds. Echinoderms: notes for a short course. University of Tennessee, Knoxville.
Stanley, S. M. 1968. Post-Paleozoic adaptive radiation of infaunal bivalve molluscs—a consequence of mantle fusion and siphon formation. Journal of Paleontology 42:214–229.
Stanley, S. M. 1979. Macroevolution: pattern and process. W. H. Freeman, San Francisco.
Stubblefield, C. J. 1960. Evolution in trilobites. Quarterly Journal of the Geological Society of London 115:145–162.
Valentine, J. W. 1969. Patterns of taxonomic and ecological structure of the shelf benthos during Phanerozoic time. Palaeontology 12:684–709.
Valentine, J. W. 1980. Determinants of diversity in higher taxonomic categories. Paleobiology 6:444–450.
Valentine, J. W. 1986. Fossil record of the origin of Baupläne and its implications. Pp. 209–222in Raup, D. M. and Jablonski, D., eds. Patterns and processes in the history of life. Springer, Berlin.
Valentine, J. W., and Erwin, D. H. 1987. Interpreting great developmental experiments: the fossil record. Pp. 71–107in Raff, R. A. and Raff, E. C., eds. Development as an evolutionary process. Liss, New York.
Valentine, J. W., and Walker, T. D. 1987. Extinctions in a model taxonomic hierarchy. Paleobiology 13:193–207.
Van Valen, L. 1971. Adaptive zones and the orders of mammals. Evolution 25:420–428.
Van Valen, L. 1974. Multivariate structural statistics in natural history. Journal of Theoretical Biology 45:235–247.
Waters, J. A. 1988. The evolutionary palaeoecology of the Blastoidea. Pp. 215–233in Paul, C. R. C. and Smith, A. B., eds. Echinoderm phylogeny and evolutionary biology. Clarendon, Oxford.
Whittington, H. B. 1966. Phylogeny and distribution of Ordovician trilobites. Journal of Paleontology 40:696–737.
Whittington, H. B. 1980. The significance of the fauna of the Burgess Shale, Middle Cambrian, British Columbia. Proceedings of the Geologists' Association 91:127–148.
Whittington, H. B., and Hughes, C. P. 1972. Ordovician geography and faunal provinces deduced from trilobite distribution. Philosophical Transactions of the Royal Society of London B 263:235–278.
Williams, A. 1957. Evolutionary rates of brachiopods. Geological Magazine 94:201–211.
