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| Titel: |
Biostratigraphic review of the Silurian tabulate corals and chaetetids of Australia |
| Auteur: |
Munson, T. J. Pickett, J. W. Strusz, D. L. |
| Verschenen in: |
Historical biology |
| Paginering: | Jaargang 15 (2001) nr. 1-2 pagina's 41-60 |
| Jaar: |
2001 |
| Inhoud: |
The biostratigraphic distribution of the Silurian Tabulata and Chaetetida of Australia can informally be described in terms of four successive coral assemblages. The earliest Bridge Creek Assemblage (Rhuddanian-Aeronian) contains abundant halysitids and is not geographically widespread. Species of this assemblage tend to be holdovers from Late Ordovician faunas. A major radiation event occurred at the time of the Quarry Creek Assemblage (Telychian-early Sheinwoodian), involving favositids, heliolitids, halysitids, and other groups. This may indicate the onset of conditions favourable to corals over widespread areas of eastern Australia. The late Sheinwoodian-earliest Gorstian Dripstone Assemblage is characterised by a continued expansion in the number of species of favositids, the appearance of auloporids, and a contraction in the number of species of sarcinulids, multi-soleniids, and halysitids. Favositids continued to dominate the youngest Hatton's Corner Assemblage (Gorstian-Pridoli), but halysitids almost became extinct by the end of the Ludlow. Faunas of Pridoli age are neither abundant nor well studied, but appear to be reduced continuations of earlier faunas. A number of tabulate taxa are identified as possibly useful biostratigraphic indicators in Silurian sequences. |
| Uitgever: |
Taylor & Francis |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 1 van 14 gevonden artikelen
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