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S. M. Stanley:A theory of evolution above the species level. In: Proceedings of the National Academy of Sciences. Band72, Nr.2, 1.Februar 1975, ISSN0027-8424, S.646–650, doi:10.1073/pnas.72.2.646, PMID 1054846, PMC432371(freier Volltext).
S. M. Stanley:A theory of evolution above the species level. In: Proceedings of the National Academy of Sciences. Band72, Nr.2, 1.Februar 1975, ISSN0027-8424, S.646–650, doi:10.1073/pnas.72.2.646, PMID 1054846, PMC432371(freier Volltext).
Günter Theißen:Saltational evolution: hopeful monsters are here to stay. In: Theory in Biosciences. Band128, Nr.1, März 2009, ISSN1431-7613, S.43–51, doi:10.1007/s12064-009-0058-z.
Stephen Jay Gould, Niles Eldredge:Punctuated equilibria: the tempo and mode of evolution reconsidered. In: Paleobiology. Band3, Nr.2, 1977, ISSN0094-8373, S.115–151, doi:10.1017/S0094837300005224.
J. John Sepkoski:A kinetic model of Phanerozoic taxonomic diversity. III. Post-Paleozoic families and mass extinctions. In: Paleobiology. Band10, Nr.2, 1984, ISSN0094-8373, S.246–267, doi:10.1017/S0094837300008186.
Stephen Jay Gould:The paradox of the first tier: an agenda for paleobiology. In: Paleobiology. Band11, Nr.1, 1985, ISSN0094-8373, S.2–12, doi:10.1017/S0094837300011350.
Stephen Jay Gould, C. Bradford Calloway:Clams and brachiopods—ships that pass in the night. In: Paleobiology. Band6, Nr.4, 1980, ISSN0094-8373, S.383–396, doi:10.1017/S0094837300003572.