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Faculty of Science, Medicine and Health - Papers: part A

2005

GeoQuest

Articles 1 - 3 of 3

Full-Text Articles in Social and Behavioral Sciences

A New Early Silurian Species Of Trimerella (Brachiopoda: Craniata) From The Orange District, New South Wales, Ian G. Percival, Anthony J. Wright Jan 2005

A New Early Silurian Species Of Trimerella (Brachiopoda: Craniata) From The Orange District, New South Wales, Ian G. Percival, Anthony J. Wright

Faculty of Science, Medicine and Health - Papers: part A

Trimerella australis, a new species of craniate brachiopod, is described from silicified material extracted from Early Silurian limestone in the Bowan Park district, 22 km west of Orange in central New South Wales. Accompanying conodonts of the Distomodus staurognathoides Zone indicate this unnamed unit is mid Llandovery (latest Aeronian to earliest Telychian) in age, and support correlation with the Cobblers Creek Limestone at the base of the Waugoola Group. As with most other occurrences of trimerellide brachiopods in the Late Ordovician and Early Silurian of the Lachlan Orogen, T. australis completely dominates its depauperate faunal associates of corals including Aphyllum ...


Llandovery (Early Silurian) Graptolites From The Quidong Basin, Nsw, R B. Rickards, R A. Parkes, Anthony J. Wright Jan 2005

Llandovery (Early Silurian) Graptolites From The Quidong Basin, Nsw, R B. Rickards, R A. Parkes, Anthony J. Wright

Faculty of Science, Medicine and Health - Papers: part A

Late Llandovery (Early Silurian) graptolites from several localities in the Merriangaah Siltstone, Quidong Basin, southern NSW, are described as Monograptus priodon (Bronn, 1835), Oktavites falx (Suess, 1851) and Oktavites bodentoeriensis Loydell, 2003. This is the first use of the generic name Oktavites in Australia. The firm age for this fauna to the spiralis graptolite Biozone and new age data from the Quidong Limestone place a maximum age for the unconformity between the Siltstone and the overlying Quidong Limestone, constraining the Quidongan Orogeny between the latest part of the Llandovery and the late or latest Wenlock.


Silurian Graptolites From The Barnby Hills Shale And The Hanover Formation, New South Wales, R B. Rickards, J R. Farrell, Anthony J. Wright, E J. Morgan Jan 2005

Silurian Graptolites From The Barnby Hills Shale And The Hanover Formation, New South Wales, R B. Rickards, J R. Farrell, Anthony J. Wright, E J. Morgan

Faculty of Science, Medicine and Health - Papers: part A

Additional collections of graptolites from the Barnby Hills Shale and new collections of graptolites from the Hanover Formation in the Lachlan Fold Belt of central western NSW are documented. The Late Silurian Hanover Formation is shown to range from the spineus Biozone (late Ludlow) to the parultimus Biozone (Pridol ). A fauna containing Monograptus ludensis is recorded from the Barnby Hills Shale, which is now known to range from the ludensis Biozone (late Wenlock) to the inexspectatus or kozlowskii Biozone (late Ludlow). New dendroid graptolite taxa described here include Dendrograptus typhlops sp. nov. from the Barnby Hills Shale and Dictyonema paululum ...