Late Triassic Palynomorph Fossils from East Antarctica

A well-preserved Late Triassic palynoflora from the upper Flagstone Bench Formation, Prince Charles Mountains, East Antarctica, contains taxa widely distributed in coeval Tethyan Laurasian assemblages. The assemblage is assigned to the Australian Minutosaccus crenulatus Zone and considered to be of Norian age. This record includes the first documented Triassic dinocyst from Antarctica.

Use Cases

• Reconstructing Late Triassic plant communities based on the described palynomorph taxa.
• Analyzing biogeographic connections between Gondwana and Laurasia based on the shared Tethyan elements.
• Dating Antarctic sedimentary sequences based on the established Minutosaccus crenulatus Zone.
• Investigating paleoclimatic controls on flora distribution based on the suggested latitudinal constraints (40°-30°S).

Strengths

• Well-preserved fossil assemblage with specific taxa listed.
• First record of a Triassic dinocyst from Antarctica.
• Assigned to a defined biostratigraphic zone (Minutosaccus crenulatus Zone) and age (Norian).

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Data may reflect geographic bias inherent to the specific Antarctic formation studied.

Provenance

Source

Australian Ocean Data Network

Collection Method

Geological field sampling and palynological analysis.

Time Range

Late Triassic (Norian age).

Freshness

Last updated 2026-06-27 17:55:56.872394; freshness should be verified.

Geography

Prince Charles Mountains, East Antarctica.