Abstract
Eocene strata in Wyoming spanning a period of 5 million years record a branching phylogeny which exhibits gradual phyletic evolution, overall size increase with iterative evolution of small species and character divergence following the origin of each new lineage.
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References
Darwin, C., The Origin of Species (Murray, London, 1859).
Van Houten, F. B., Bull. geol. Soc. Am., 54, 178 (1944).
Neasham, J. W., and Vondra, C. F., Bull. geol. Soc. Am., 83, 2167 (1972).
Evernden, J. F., Savage, D. E., Curtis, G. H., and James, G. T., Am. J. Sci., 262, 167 (1964).
Gingerich, P. D., J. Paleont. (in the press).
Gazin, C. L., Smithson. misc. Collns, 153 (4), 2 (1968).
Guthrie, D. A., Mem. sth Calif. Acad. Sci., 5, 35 (1967).
Stanley, S. M., Evolution, Lancaster, Pa., 27, 1 (1973).
Beurlen, K., Paläont. Z., 11, 50 (1929).
Kaufmann, R., Abh. geol.-palaeont. Inst. Greifswald, 10, 1 (1933).
Mayr, E., Animal Species and Evolution, 467 (Harvard Univ. Press, Cambridge, 1963).
Remington, C., Evolut. Biol., 2, 374 (1968).
Grant, P. R., Biol. J. Linn. Soc., 4, 43 (1972).
Mayr, E., Populations, Species, and Evolutions, 345 (Harvard Univ. Press, Cambridge, 1970).
Eldredge, N., Evolution, Lancaster, Pa., 25, 156 (1971).
Eldredge, N., and Gould, S. J., in Models in Paleobiology (edit. by Schopf, T.), 82 (Freeman, Cooper, San Francisco, 1972).
Trueman, A., Geol. Mag., 59, 256 (1922).
Brinkman, R., Abh. Ges. Wiss. Göttingen, 13 (3), 1 (1929).
Stenzel, H. B., Evolution, Lancaster, Pa., 3, 34 (1949).
Kermack, K. A., Phil. Trans. R. Soc. Lond., B 237, 375 (1954).
Simpson, G. G., Ann. N.Y. Acad. Sci., 44, 174 (1943).
Trevisan, L., Ricerca scient. Suppl., 19, 105 (1949).
Schultz, C. B., Tanner, L. G., and Martin, L. D., Bull. Univ. Neb. St. Mus., 9, 183 (1972).
Maglio, V. J., Nature, 239, 384 (1972).
Emry, R. J., Smithson. Contr. Paleobiol., No. 18, 34 (1973).
Kluge, A., and Kerfoot, W., Am. Nat., 107, 426 (1973).
Pilbeam, D. R., and Zwell, M., Yearb. phys. Anthrop., 16, 74 (1973).
Guthrie, D. A., Ann. Carneg. Mus., 43, 47 (1971).
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Gingerich, P. Stratigraphic record of Early Eocene Hyopsodus and the geometry of mammalian phylogeny. Nature 248, 107–109 (1974). https://doi.org/10.1038/248107a0
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DOI: https://doi.org/10.1038/248107a0
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