From Geoscience Australia
JSON format icon JSON RDF format icon RDF ISO19115-3 XML

Carboniferous, Permian, and Triassic conchostracans of Australia : three new studies

Created 17/10/2025

Updated 17/10/2025

JSON format icon JSON RDF format icon RDF ISO19115-3 XML

The upper part of the Carboniferous Anderson Formation (late Visean to possibly early Namurian), in its type section (Grant Range No. I Well), contains five, possibly six, conchostracan genera: Leaia, Monoleaia, Rostroleaia, Limnadiopsileaia, Cyzicus, and possibly Ellipsograpla. The ribbed genus Hemicycloleaia Raymond is reassigned as a subgenuSi of Leaia, and seven new Carboniferous species are described: Leaia (Leaia) andersonae, Leaia (Hemicycloleaia) rectangellipla, Leaia (Hemicycloleaia) grantrangicus, Leaia (Hemicycloleaia) tonsa, Leaia (Hemicycloleaia) longicosta, Monoleaia australiata, and Limnadiopsileaia carboni/erae. The Lower Triassic Blina Shale, in scattered outcrops (Bell's Ridge, Erskine Hill, Wongil Ridge, Lake lones, and Minnie Range), and in Meda No. I Well, contains three conchostracan genera: Estheriina, Palaeolimnadia, and Cyzicus. Two new subgenera are established: Estheriina (Nudusia), and Palaeolimnadia (Grandilimnadia). Estheriina (Nudusia) is distinguished from E. (Estheriina) lones by the absence of growth bands on the umbonal area; and Palaeolimnadia (Grandilimnadia) is distinguished from P. (Palaeolimnadia) Raymond by its smaller umbonal area-without growth bands-relative to the entire valve, and its lower valve form (height/length) ratio. Four new Triassic species are described: Cyzicus (Lioestheria) erskinehillensis, Palaeolimnadia (Grandilimnadia) medaensis, and Estheriina (Nudusia) blina from the Canning Basin, and Palaeolimnadia (Grandilimnadia) mitchelli from the Sydney Basin. Belgolimnadiopsis allstralensis Novozhilov, present in the Triassic of both the Sydney and Canning Basins, is referred to the subgenus Cyzicus (Lioestheria). The only genus that persisted from the Carboniferous into the Triassic of the Canning Basin was CYZiCllS. Upper Permian palaeolimnadids from the Newcastle Coal Measures of the Sydney Basin were available for passive dispersal westward. The Knocklofty Formation of Tasmania, a correlate of the Blina Shale, also has a Palaeolimnadia-Cyzicus fauna.

Files and APIs

Tags

Additional Info

Field Value
Title Carboniferous, Permian, and Triassic conchostracans of Australia : three new studies
Language eng
Licence Not Specified
Landing Page https://data.gov.au/data/dataset/2dffcd0b-22bd-4f43-bc03-e31b93793340
Contact Point
Geoscience Australia Data
clientservices@ga.gov.au
Reference Period 20/04/2018
Geospatial Coverage
Map data © OpenStreetMap contributors
{
  "coordinates": [
    [
      [
        112.0,
        -44.0
      ],
      [
        155.0,
        -44.0
      ],
      [
        155.0,
        -10.0
      ],
      [
        112.0,
        -10.0
      ],
      [
        112.0,
        -44.0
      ]
    ]
  ],
  "type": "Polygon"
}
Data Portal Geoscience Australia

Data Source

This dataset was originally found on Geoscience Australia "Carboniferous, Permian, and Triassic conchostracans of Australia : three new studies". Please visit the source to access the original metadata of the dataset:
https://ecat.ga.gov.au/geonetwork/srv/eng/csw/dataset/carboniferous-permian-and-triassic-conchostracans-of-australia-three-new-studies