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The first well-preserved radiolarians from the Ordovician of Australia

Published online by Cambridge University Press:  14 July 2015

B. D. Webby  and
W. M. Blom
B. D. Webby
Affiliation:
Department of Geology and Geophysics, University of Sydney, Sydney, N.S.W. 2006, Australia
W. M. Blom
Affiliation:
Department of Geology and Geophysics, University of Sydney, Sydney, N.S.W. 2006, Australia
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Abstract

Late Ordovician radiolarians are described from allochthonous limestone breccia deposits of the graptolitic Malongulli Formation of central New South Wales. Included among the forms are the new ‘palaeoactinommid’ genus Kalimnasphaera with new species K. maculosa, the new entactiniid species, Entactinia subulata, and the new anakrusid species, Auliela taplowensis. A number of other entactiniids and the first recorded Ordovician ‘rotasphaerids’ are placed in open nomenclature. Graptolite faunas of the Malongulli Formation indicate that the deposits range in age from the Eastonian Zone of Dicranograptus hians kirki to the Bolindian Zone of Climacograptus uncinatus, that is, from latest Caradoc to early or middle Ashgill in age. This is only the second known well-preserved radiolarian assemblage to be illustrated from Late Ordovician (late Caradoc–Ashgill) successions, and the earliest known from Australia. The radiolarians typically occur in tabularly shaped, laminated lime-mudstone clasts with an abundance of siliceous sponge remains. These clasts appear to be formed from peri-platform ooze of the ‘deeper-water’ slope facies, which became incorporated in debris flows moving into the adjoining basin.

Type
Research Article
Information
Journal of Paleontology , Volume 60 , Issue 1 , January 1986 , pp. 145 - 157
Copyright
Copyright © The Journal of Paleontology 

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References

Campbell, A. S. 1954. Radiolaria, p. D11–163. In Moore, R. C. (ed.), Treatise on Invertebrate Paleontology, Part D. Geological Society of America and University of Kansas Press, Lawrence.Google Scholar
Dunham, J. B. 1977. Depositional environments and paleogeography of the Upper Ordovician, Lower Silurian carbonate platform of central Nevada, p. 157–164. In Stewart, J. H., Stevens, C. H. and Fritsche, A. E. (eds.), Paleozoic Paleogeography of the Western United States. Pacific Section, Society of Economic Paleontologists and Mineralogists, Los Angeles.Google Scholar
Dunham, J. B. and Murphy, M. A. 1976. An occurrence of well-preserved Radiolaria from the Upper Ordovician (Caradocian), Eureka County, Nevada. Journal of Paleontology, 50:882–887.Google Scholar
Foreman, H. P. 1963. Upper Devonian Radiolaria from the Huron Member of the Ohio Shale. Micropaleontology, 9:267–304.Google Scholar
Fortey, R. A. and Holdsworth, B. K. 1972. The oldest known and well-preserved Radiolaria. Bollettino della Societa Paleontologica Italiana, 10:35–41.Google Scholar
Hinde, G. J. 1899. On the Radiolaria in the Devonian rocks of New South Wales. Quarterly Journal of the Geological Society of London, 55:38–64.Google Scholar
Holdsworth, B. K. 1977. Paleozoic Radiolaria: stratigraphic distribution in Atlantic borderlands, p. 167–184. In Swain, F. M. (ed.), Stratigraphic Micropaleontology of Atlantic Basin and Borderlands. Elsevier, Amsterdam.Google Scholar
Holdsworth, B. K. and Jones, D. L. 1980. Preliminary radiolarian zonation for Late Devonian through Permian time. Geology, 8:281–285.Google Scholar
Hubert, J. F., Suchecki, R. K. and Callahan, R. K. M. 1977. The Cow Head Breccia: Sedimentology of the Cambro-Ordovician continental margin, Newfoundland, p. 125–154. In Cook, H. E. and Enos, P. (eds.), Deep-water Carbonate Environments. Society of Economic Paleontologists and Mineralogists, Special Publication 25.Google Scholar
Jenkins, C. J. 1978. Llandovery and Wenlock stratigraphy of the Panuara area, central New South Wales. Proceedings of the Linnean Society of New South Wales, 102:109–130.Google Scholar
Kling, S. A. 1978. Radiolaria, p. 203–244. In Haq, B. U. and Boersma, A. (eds.), Introduction to Marine Micropaleontology. Elsevier, New York.Google Scholar
Moors, H. T. 1970. Ordovician graptolites from the Cliefden Caves area, Mandurama, N.S.W., with a re-appraisal of their stratigraphic significance. Proceedings of the Royal Society of Victoria, 83:253–288.Google Scholar
Muller, J. 1858. Uber die Thalassicollen, Polycystinen und Acanthometren des Mittelmeeres. Abhandlungen preussische Akademie der Wissenschaften, Jahrgang 1858:1–62.Google Scholar
Nazarov, B. B. 1975. Lower and Middle Paleozoic radiolarians of Kazakhstan. Geologicheskiy Institut Akademiya Nauk Trudy SSSR, 275:1–190 (in Russian).Google Scholar
Nazarov, B. B. 1977. A new radiolarian family from the Ordovician of Kazakhstan. Paleontologicheskii Zhurnal, 1977, 2:35–41.Google Scholar
Nazarov, B. B., Cockbain, A. E. and Playford, P. E. 1982. Late Devonian Radiolaria from the Gogo Formation, Canning Basin, Western Australia. Alcheringa, 6:161–173.CrossRefGoogle Scholar
Nazarov, B. B. and Popov, L. Ye. 1976. Radiolarians, ecardine brachiopods and organisms of uncertain systematic position from the Middle Ordovician of eastern Kazakhstan. Paleontologicheskii Zhurnal, 1976, 4:33–42.Google Scholar
Nazarov, B. B. and Popov, L. Ye. 1980. Stratigraphy and fauna of Ordovician siliceous-carbonate deposits of Kazakhstan (radiolarians and inarticulate brachiopods). Geologicheskiy Institut Akademiya Nauk Trudy, SSSR, 331:1–203 (in Russian).Google Scholar
Percival, I. G. 1976. The geology of the Licking Hole Creek area, near Walli, central western New South Wales. Journal and Proceedings of the Royal Society of New South Wales, 109:7–23.Google Scholar
Percival, I. G. 1978. Inarticulate brachiopods from the Late Ordovician of New South Wales, and their palaeoecological significance. Alcheringa, 2:117–141.CrossRefGoogle Scholar
Percival, I. G. 1979. Ordovician plectambonitacean brachiopods from New South Wales. Alcheringa, 3:91–116.Google Scholar
Riedel, W. R. 1967. Some new families of Radiolaria. Proceedings of the Geological Society of London, 1640:148–149.Google Scholar
Stevens, N. C. 1952. Ordovician stratigraphy at Cliefden Caves, near Mandurama, N.S.W. Proceedings of the Linnean Society of New South Wales, 77:114–120.Google Scholar
VandenBerg, A. H. M. 1983. Comparison between standard British and Victorian Ordovician graptolite zones. Abstracts, 6th Australian Geological Convention, Geological Society of Australia, 9:238–239.Google Scholar
Webby, B. D. 1973. Remopleurides and other Upper Ordovician trilobites from New South Wales. Palaeontology, 16:445–475.Google Scholar
Webby, B. D. 1974. Upper Ordovician trilobites from central New South Wales. Palaeontology, 17:203–252.Google Scholar
Webby, B. D., Moors, H. T. and McLean, R. A. 1970. Malongullia and Encrinuraspis, new Ordovician trilobites from New South Wales, Australia. Journal of Paleontology, 44:881–887.Google Scholar
Webby, B. D. et al. 1981. The Ordovician System in Australia, New Zealand and Antarctica: correlation chart and explanatory notes. International Union of Geological Sciences, Publication 6:1–64.Google Scholar
Webby, B. D. and Packham, G. H. 1982. Stratigraphy and regional setting of the Cliefden Caves Limestone Group (Late Ordovician), central-western New South Wales. Journal of the Geological Society of Australia, 29:297–317.Google Scholar
Williams, S. H. 1982. Upper Ordovician graptolites from the top Lower Hartfell Shale Formation (D. clingani and P. linearis zones) near Moffat, southern Scotland. Transactions of the Royal Society of Edinburgh, Earth Sciences, 72:229–255.Google Scholar