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Upper Triassic spongiomorph and coral association dredged off the northwestern Australian shelf

Created 17/10/2025

Updated 17/10/2025

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Upper Triassic corals and spongiomorphs dredged during BMR Cruise 95 from the Rowley Terrace, offshore Canning Basin of northwestern Australia, indicate possible new occurrences of reef facies. These are comparable to counterparts known from the Northern Limestone Alps of central Europe. A branching spongiomorph, represented by the genus Spongiomorpha sp. and two coral taxa, Pamiroseris rectilamellosa (Winkler) and Retiophyllia tellae (Stoppani), are reported herein. Collectively, these fossils indicate a Late Triassic (Norian- Rhaetian) age. Although different in taxonomic composition, the fauna compares with one previously reported from a Late Triassic ODP reef site (sitc 764) on the Wombat Plateau, some 350 km to the west. The Rowley Terrace occurrences may represent an eastward extension of the Wombat reefs, developed along the rifted margin of Gondwana.

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Field Value
Title Upper Triassic spongiomorph and coral association dredged off the northwestern Australian shelf
Language eng
Licence Not Specified
Landing Page https://data.gov.au/data/dataset/13cf5f8b-5e78-4e11-9b3f-91de35156960
Contact Point
Geoscience Australia Data
clientservices@ga.gov.au
Reference Period 20/04/2018
Geospatial Coverage
Map data © OpenStreetMap contributors
{
  "coordinates": [
    [
      [
        116.0,
        -19.0
      ],
      [
        121.0,
        -19.0
      ],
      [
        121.0,
        -14.5
      ],
      [
        116.0,
        -14.5
      ],
      [
        116.0,
        -19.0
      ]
    ]
  ],
  "type": "Polygon"
}
Data Portal Geoscience Australia

Data Source

This dataset was originally found on Geoscience Australia "Upper Triassic spongiomorph and coral association dredged off the northwestern Australian shelf". Please visit the source to access the original metadata of the dataset:
https://ecat.ga.gov.au/geonetwork/srv/eng/csw/dataset/upper-triassic-spongiomorph-and-coral-association-dredged-off-the-northwestern-australian-shelf1