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Clarification of an index nannofossil species for the Paleocene/Eocene boundary

Published online by Cambridge University Press:  20 May 2016

Wuchang Wei
Wuchang Wei*
Affiliation:
Scripps Institution of Oceanography, University of California, San Diego, La Jolla 92093-0215
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Extract

The first occurrence of Discoaster diastypus Bramlette and Sullivan is a marker for the CP8/CP9 zonal boundary in the widely used nannofossil zonation of Okada and Bukry (1980). This zonal boundary has commonly been used to approximate the Paleocene/Eocene boundary (e.g., Berggren et al., 1985; Perch-Nielsen, 1985). In spite of the frequent use and importance of D. diastypus in biostratigraphy, there has been some confusion about this species in the literature, including some of the most used references. For instance, Bramlette and Sullivan (1961), who first described the species, incorrectly defined D. diastypus in terms of its ray number and size (see Figure 1), and included a specimen of Discoaster falcatus Bramlette and Sullivan as an isotype of D. diastypus (Bramlette and Sullivan, 1961, pi. 11, fig. 6). Perch-Nielsen (1971, pi. 51, figs. 8 and 10) figured a specimen of Discoaster barbadiensis Tan and another specimen of Discoaster bifax Bukry as D. diastypus. These mistakes apparently have gone unnoticed and were adopted by Romein (1979, p. 168) and incorporated in the Handbook of Cenozoic Calcareous Nannoplankton (Aubry, 1984, p. 46, fig. 111; p. 48, figs. 114 and 115).

Type
Paleontological Notes
Information
Journal of Paleontology , Volume 70 , Issue 3 , May 1996 , pp. 526 - 529
Copyright
Copyright © The Paleontological Society 

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References

Aubry, M.-P. 1984. Handbook of Cenozoic Calcareous Nannoplankton, Book 1: Ortholithae (Discoasters). Micropaleontology Press, American Museum of Natural History, 263 p.Google Scholar
Applegate, J. L., and Wise, S. W. Jr. 1987. Eocene calcareous nannofossils, Deep Sea Drilling Project Site 605, upper continental rise off New Jersey, U.S.A., p. 685–698. In van Hinte, J. E., Wise, S. W., et al. (eds.), Initial Report of the Deep Sea Drilling Project, 93. United States Government Printing Office, Washington, D.C.Google Scholar
Backman, J. 1986. Late Paleocene to middle Eocene calcareous nannofossil biochronology from the Shatsky Rise, Walvis Ridge and Italy. Palaeogeography, Palaeoecology, Palaeoclimatology, 57:43–59.Google Scholar
Berggren, W. A., Kent, D. V., and Van Couvering, J. A. 1985. Paleogene geochronology and chronostratigraphy. In Snelling, N. J. (ed.), The Chronology of the Geological Record, Geological Society of London, Memoir, 10:211–250.Google Scholar
Bramlette, M. N., and Sullivan, F. R. 1961. Coccolithophorids and related nannoplankton of the early Tertiary in California. Micropaleontology, 7:129–188.Google Scholar
Bukry, D., 1973. Low-latitude coccolith biostratigraphic zonation, p. 685–703. In Edgar, N. T., Saunders, J. B., et al. (eds.), Initial Report of the Deep Sea Drilling Project, 15. United States Government Printing Office, Washington, D.C.Google Scholar
Jiang, Y. W. and Wise, S. W. Jr. 1987. Paleocene-Eocene calcareous nannofossils of onshore wells from the coastal plain of New Jersey and Maryland, USA., p. 699–11. In van Hinte, J. E., Wise, S. W., et al. (eds.), Initial Report of the Deep Sea Drilling Project, 93. United States Government Printing Office, Washington, D.C.Google Scholar
Monechi, S. 1985. Campanian to Pleistocene calcareous nannofossil stratigraphy from the northwest Pacific Ocean, Deep Sea Drilling Project Leg 86, p. 301–336. In Heath, G. R., Burckle, L. H., et al. (eds.), Initial Report of the Deep Sea Drilling Project, 86. United States Government Printing Office, Washington, D.C.Google Scholar
Müller, C. 1985. Biostratigraphic and paleoenvironmental interpretation of the Goban Spur region based on a study of calcareous nannoplankton, p. 573–599. In Graciansky, P. C., Poag, C. W., et al. (eds.), Initial Report of the Deep Sea Drilling Project, 80. United States Government Printing Office, Washington, D.C.Google Scholar
Okada, H., and Bukry, D. 1980. Supplementary modification and introduction of code numbers to the low-latitude coccolith biostratigraphic zonation (Bukry 1973, 1975). Marine Micropaleontology, 5:321–325.Google Scholar
Perch-Nielsen, K. 1971. Elektronenmikroskopische untersuchungen an coccolithen und verwandten formen aus dem Eozän von Dänemark. Det Kongelige Danske Videnskabernes Selskab Biologiske Strifter, 18:1–76.Google Scholar
Perch-Nielsen, K. 1985. Cenozoic nannofossils, p. 427–554. In Bolli, H. M., Saunders, J. B., and Perch-Nielsen, K. (eds.), Plankton Stratigraphy. Cambridge University Press, Cambridge.Google Scholar
Pospichal, J. J., and Wise, S. W., 1990. Paleocene to middle Eocene calcareous nannofossils of ODP Sites 689 and 690, Maud Rise, Weddell Sea, p. 613–638. In Barker, P. F., Kennett, J. P., et al. (eds.), Proceedings of the Ocean Drilling Program, 113. Ocean Drilling Program, College Station.Google Scholar
Romein, A. J. T. 1979. Lineages in early Paleogene calcareous nannoplankton. Utrecht Micropaleontology Bulletin, 22:1–231.Google Scholar
Sullivan, F. R. 1964. Lower Tertiary nannoplankton from the California Coast Ranges. I. Paleocene. University of California Publications in Geological Sciences, 44:163–227.Google Scholar
Tan, S. H. 1927. Discoasteridae incertae sedis. Koninklijke Akademie van Wetenschappen Amsterdam, Proceedings, 30:411–419.Google Scholar
Wei, W. 1992. Biometric study of Discoaster multiradiatus and its biochronological utility. Memorie di Scienze Geologiche, 43:219–235.Google Scholar
Wei, W., and Thierstein, H. 1991. Upper Cretaceous and Cenozoic calcareous nannofossils of the Kerguelen Plateau (southern Indian Ocean) and Prydz Bay (East Antarctica), p. 467–493. In Barron, J., Larsen, B., et al. (eds.), Proceedings of the Ocean Drilling Program, 119. Ocean Drilling Program, College Station.CrossRefGoogle Scholar
Wei, W., and Wise, S. W. Jr. 1989. Discoaster praebifax n. sp.: a possible ancestor of Discoaster bifax Bukry (Coccolithophoridae). Journal of Paleontology, 63:10–14.Google Scholar