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First record of shared species of Late Permian small foraminiferids in Australia and Russia: time correlations and plate reconstructions

Created 17/10/2025

Updated 17/10/2025

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At least 12 species of small calcareous foraminiferids known from early Late Permian assemblages from Arctic Russia and adjacent areas also occur in assemblages from the eastern Australian Ingelara Formation of the Bowen Basin (Queensland). A key species is Pseudonodosaria borealis (Gerke 1952), newly recognised in Australia. The shared species allow direct correlation with Late Permian Russian assemblages of Kazanian age. This is the first microfaunal evidence of correlative strata in Gondwana; previous chronologic ties in this region have relied on rare and geographically scattered records of ammonoids from both eastern and western Australia. Other shared foraminiferids from the Ingelara Formation include taxa described in 1914 by Tscherdynzev [Nodosaria krotovi, N. noinskii and N. netchajevi, Lenticulina (Astacolus) rotaliaeformis]; and by Gerke in 1952 and 1961 [Frondicularia inflata, F. bella, F. prima, F. tijanica, F. dilemma, Tristix permiana, Nodosaria cuspidulata). A brief synonymy shows that almost all of these Russian taxa may have been recognised previously in Australian assemblages, but under different names. Pseudonodosaria serocoldensis (Crespin 1945) is considered an ancestor of P. borealis and its appearance in older assemblages in both Spitsbergen (Kungurian) and Australia (Bowen Basin, late Artinskian) suggests that similar evolutionary developments of the faunas occurred throughout a continuous seaway that connected these areas since the early Permian. Migration of these benthic forms is presumed to have occurred via deep ocean currents and suggests that either Arctic Russia (Nordvik Basin, Siberia: parts of Novaya Zemlya) and Spitsbergen were in closer proximity to Australia than is generally accepted in modern plate reconstructions for the Late Permian or, most likely, that new oceanic dispersal patterns are required to explain their distribution.

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Title First record of shared species of Late Permian small foraminiferids in Australia and Russia: time correlations and plate reconstructions
Language eng
Licence Not Specified
Landing Page https://data.gov.au/data/dataset/e85dd6ca-9320-4196-a7f4-9d20035ece78
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 "First record of shared species of Late Permian small foraminiferids in Australia and Russia: time correlations and plate reconstructions". Please visit the source to access the original metadata of the dataset:
https://ecat.ga.gov.au/geonetwork/srv/eng/csw/dataset/first-record-of-shared-species-of-late-permian-small-foraminiferids-in-australia-and-russia-tim