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April 8, 2026Antarctic ScienceOpen Access

First vertebrate assemblage from the middle member of the Fremouw Formation (Lower Triassic) of Antarctica

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Describes the first vertebrate assemblage from the middle member of the Fremouw Formation, suggesting important ecological implications.

This research aims to identify and describe the vertebrate assemblage from the middle member of the Fremouw Formation and its ecological significance post-extinction.
Described vertebrate fossil assemblage including procolophonids and archosauromorphs
Examined lithostratigraphy of lower, middle, and upper members of the Fremouw Formation
Analyzed taphonomic shifts affecting fossil preservation
Identified first vertebrate fossils from the middle member of the Fremouw Formation
Noted evidence of taphonomic shifts favoring preservation of smaller-bodied taxa
Provided context for subpolar vertebrate communities during the earliest Mesozoic

Woolley et al. (2026) studied this question.

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