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Treposellidae (Beyrichiacea: Ostracoda) from the latest Devonian (Strunian) of the Bonaparte Basin, Western Australia

Created 17/10/2025

Updated 17/10/2025

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Three new beyrichiacean genera are described from the type section of the Buttons beds, latest Devonian, along the eastern bank of the Ord River: Notoscapha gen. nov. (type species N. oepiki sp.nov.) from the lower part of the section below 120 m, Parabouchekius gen. nov. (type species P. martinssoni sp. nov.) and Katatona gen. nov. (type species K. romei sp. nov.) both from the middle part of the section 120-200 m. They lack traces of a dolonoid closing mechanism, and are interpreted, within Martinssons scheme of beyrichiacean phylogeny, as advanced treposellids. The posterocentral site of a possible rudimentary crumina in a presumed female specimen of Katatona romei may indicate a syllobial origin for the crumina in those genera having a similar type of dimorphism. This type of cruminal dimorphism is present in species from the Late Devonian of the European USSR that have been assigned to Aparchites and to the related genera Bouchekius, Copelandites, and Reversoscapha. The distribution of species of Katatona, Bouchekius, and Parabouchekius is discussed to evaluate their potential for long-distance correlation in the latest Devonian (ie., late Famennian and Strunian). At present, Katatona indicates a Strunian (Fa2d, Tnla) age, and its presence in the Buttons beds supports the age assignment recently proposed on miospore evidence.

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Title Treposellidae (Beyrichiacea: Ostracoda) from the latest Devonian (Strunian) of the Bonaparte Basin, Western Australia
Language eng
Licence Not Specified
Landing Page https://data.gov.au/data/en/dataset/cfa798df-5b56-4248-9ce5-a5466c41ee3b
Contact Point
Geoscience Australia Data
clientservices@ga.gov.au
Reference Period 20/04/2018
Geospatial Coverage
Map data © OpenStreetMap contributors
{
  "coordinates": [
    [
      [
        128.0,
        -17.0
      ],
      [
        129.5,
        -17.0
      ],
      [
        129.5,
        -14.5
      ],
      [
        128.0,
        -14.5
      ],
      [
        128.0,
        -17.0
      ]
    ]
  ],
  "type": "Polygon"
}
Data Portal Geoscience Australia

Data Source

This dataset was originally found on Geoscience Australia "Treposellidae (Beyrichiacea: Ostracoda) from the latest Devonian (Strunian) of the Bonaparte Basin, Western Australia". Please visit the source to access the original metadata of the dataset:
https://ecat.ga.gov.au/geonetwork/srv/eng/csw/dataset/treposellidae-beyrichiacea-ostracoda-from-the-latest-devonian-strunian-of-the-bonaparte-basin-w