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Rhytiobeyrichia, a new beyrichiacean ostracod from the late Devonian of Western Australia

Created 17/10/2025

Updated 17/10/2025

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A palaeocope ostracod with a distinct lobation and crumina occurs in the late Devonian (Strunian) sequences of the Canning and Bonaparte Basins. It is assigned to the new genus Rhytiobeyrichia, and is interpreted, within Martinssons scheme of beyrichiacean phylogeny, as an advanced beyrichiine. The interpretation of its ontogeny and sexual dimorphism, based on limited material, indicates that the genus is represented by a single rather than sympatric, species. The species, Rhytiobeyrichia waruwa sp.nov. ( = type species of Rhytiobeyrichia), if interpreted correctly, is unique in representing a possible example of the phenomenon of preadult dimorphism in the Beyrichiacea. This tentative daim would be negated if later work, based on more material, shows that R. waruwa sp.nov. does in fact consist of more than one species. The occurrence of Rhytiobeyrichia waruwa sp. nov. in strata of comparable (Strunian) age in the Canning and Bonaparte Basins indicates its value for correlation. In the Canning Basin, the stratigraphy of the Fairfield Group, as identified by Druce and Radke (1979) in several well sections, is in need of revision. This interval, a good source potential for petroleum, is reinterpreted for the Napier No. 1 and No.4 Wells.

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Field Value
Title Rhytiobeyrichia, a new beyrichiacean ostracod from the late Devonian of Western Australia
Language eng
Licence Not Specified
Landing Page https://data.gov.au/data/dataset/fc0e9701-cdb6-43f6-af99-b076571f902e
Contact Point
Geoscience Australia Data
clientservices@ga.gov.au
Reference Period 20/04/2018
Geospatial Coverage
Map data © OpenStreetMap contributors
{
  "coordinates": [
    [
      [
        118.6,
        -24.04
      ],
      [
        129.94,
        -24.04
      ],
      [
        129.94,
        -13.32
      ],
      [
        118.6,
        -13.32
      ],
      [
        118.6,
        -24.04
      ]
    ]
  ],
  "type": "Polygon"
}
Data Portal Geoscience Australia

Data Source

This dataset was originally found on Geoscience Australia "Rhytiobeyrichia, a new beyrichiacean ostracod from the late Devonian of Western Australia". Please visit the source to access the original metadata of the dataset:
https://ecat.ga.gov.au/geonetwork/srv/eng/csw/dataset/rhytiobeyrichia-a-new-beyrichiacean-ostracod-from-the-late-devonian-of-western-australia