A middle Cambrian shallow water trilobite fauna from the Comstock Formation, near Queenstown, western Tasmania
A limestone lens within the Comstock Formation, from low in the Tyndall Group near the Lyell Comstock Mine near Queenstown, western Tasmania, contains a small trilobite fauna. The trilobites include Ammagnostus cf. laiwuensis, Kootenia sp., Sudanomocarina?
sp. and a possible member of the Monkaspidae. These suggest an age somewhere in the range from the upper Ptychagnostus atavus Zone to the Lejopyge laevigata Zone, with regional stratigraphic correlations suggesting the latter zone. This is only the second Tasmanian Cambrian fossil
assemblage described from limestone; almost all previously described Tasmanian Cambrian faunas are found in siltstones and shales.
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Document Type: Research Article
Barbara Hardy Institute, School of Natural and Built Environments, University of South Australia, Mawson Lakes, SA, 5095, Australia
30 Albert Street, Clare, SA, 5453, Australia
Department of Earth Sciences, Nanjing University, Nanjing, 210093, PR China
35 Pillinger Drive, Fern Tree, Tasmania, 7054, Australia
Publication date: October 3, 2014