From Geoscience Australia
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Archaeocyatha of the Amadeus and Georgina Basins

Created 09/01/2026

Updated 09/01/2026

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The Todd River Dolomite (Amadeus Basin) and Mount Baldwin Formation (Georgina Basin) are a part of the Early Cambrian platform cover of the central Australian craton. Marine dolostones of these rock units preserve a limited archaeocyathan-radiocyathan fauna, including Aldanocyathus greeni Kruse sp. nov., Coscinocyathus bilateralis (Taylor), Dictyocyathus, Aruntacyathus toddi Kruse gen. et sp. nov. (Metacyathidae), and Radiocyathus minor (Bedford and Bedford). ?Aruntacyathus rossi Kruse sp. nov. and Beltanacyathus Bedford and Bedford are known traditionally from the Todd River Dolomite. On the basis of the common occurrence of elements of Faunal Assemblage No. 2 (Daily, 1956), the Todd River Dolomite and Mount Baldwin Formation can be correlated with the lower part of the Ajax and Wilkawillina Limestones of South Australia. The central Australian and corresponding South Australian archaeocyathan faunas appear to be coeval with those of the Atdabanian and possibly early Lenian stages of Siberia.

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Additional Info

Field Value
Title Archaeocyatha of the Amadeus and Georgina Basins
Language eng
Licence Not Specified
Landing Page https://data.gov.au/data/dataset/cd28a15d-b3a7-4439-b886-3d903b1e4816
Contact Point
Geoscience Australia Data
clientservices@ga.gov.au
Reference Period 20/04/2018
Geospatial Coverage
Map data © OpenStreetMap contributors
{
  "coordinates": [
    [
      [
        133.5,
        -25.0
      ],
      [
        136.5,
        -25.0
      ],
      [
        136.5,
        -22.0
      ],
      [
        133.5,
        -22.0
      ],
      [
        133.5,
        -25.0
      ]
    ]
  ],
  "type": "Polygon"
}
Data Portal Geoscience Australia

Data Source

This dataset was originally found on Geoscience Australia "Archaeocyatha of the Amadeus and Georgina Basins". Please visit the source to access the original metadata of the dataset:
https://ecat.ga.gov.au/geonetwork/srv/eng/csw/dataset/archaeocyatha-of-the-amadeus-and-georgina-basins2