Late Triassic Palynomorph Fossils from East Antarctica's Flagstone Bench Formation

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 is published by the Australian Ocean Data Network and was last updated in April 2026.

Use Cases

• Study Late Triassic plant biogeography based on the presence of Tethyan palynomorphs in Antarctica.
• Analyze paleoclimate controls based on the described latitudinal distribution of the Onslow Microflora between 40°-30°S.
• Investigate ancient coastal migration pathways based on the description of dispersal along Tethyan plains during sea-level regression.
• Correlate stratigraphic ages based on the assignment to the Minutosaccus crenulatus Zone and Norian age.

Strengths

• Well-preserved fossil assemblage from a specific geological formation (Flagstone Bench Formation).
• Includes the first recorded specimen of a Triassic dinocyst from Antarctica.
• Assemblage is tied to a specific biozone (Minutosaccus crenulatus Zone) and age (Norian).

Limitations

• Row count and dataset scale are unknown, which may limit suitability assessment.
• Column-level documentation is absent; field semantics must be inferred after download.
• Data may reflect geographic bias inherent to a single Antarctic location.

Provenance

Source

Australian Ocean Data Network

Collection Method

Likely contains fossil identification and taxonomic analysis from geological samples.

Time Range

Late Triassic (Norian age)

Freshness

Last updated 2026-04-16 08:17:33.319175; freshness should be verified.

Geography

Prince Charles Mountains, East Antarctica