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Late Cambrian trilobites from the Mariner Group, northern Victoria Land, Antarctica

Created 16/10/2025

Updated 16/10/2025

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This paper describes the youngest Late Cambrian trilobite assemblage so far discovered in the Mariner Group (Bowers Supergroup) northern Victoria Land, Antarctica. It occurs near the base of the Limestone Unit in the middle of the Eureka Formation, at Eureka Spurs, at the head of Mariner Glacier. The assemblage contains seven determined trilobite taxa: Homagnostus cf. ultraobesus Lermontova, 1940, Pseudagnostus (P.) ex gr. communis (Hall and Whitfield, 1877), Olentella cf. shidertensis Ivshin, 1956, Notoaphelaspis sp. undet., Apheloides? depressa sp. nov" Elviraspis? sp. undet., and Proceratopyge (P.) cf. liaotungensis Kobayashi and Ichikawa, 1955. This fauna is related to material previously described from Kazakhstan or southern Siberia, north China; Australia, and North America. Russian relationships appear to be dominant, but palaeogeographically difficult to explain. The present fauna is younger than that earlier described from the underlying Spurs Formation, which was considered to be late Idamean (late Dresbachian). The Eureka material is likely to be immediately post-Idamean (early Franconian), but its exact biochronological position is not yet finally established.

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Title Late Cambrian trilobites from the Mariner Group, northern Victoria Land, Antarctica
Language eng
Licence Not Specified
Landing Page https://data.gov.au/data/dataset/1aada941-4585-4334-92d7-c1704147aaa6
Contact Point
Geoscience Australia Data
clientservices@ga.gov.au
Reference Period 20/04/2018
Geospatial Coverage Australia
Data Portal Geoscience Australia

Data Source

This dataset was originally found on Geoscience Australia "Late Cambrian trilobites from the Mariner Group, northern Victoria Land, Antarctica". Please visit the source to access the original metadata of the dataset:
https://ecat.ga.gov.au/geonetwork/srv/eng/csw/dataset/late-cambrian-trilobites-from-the-mariner-group-northern-victoria-land-antarctica