Late Cambrian Trilobite Assemblage from Antarctic Mariner Group

Seven determined trilobite taxa comprise the youngest Late Cambrian assemblage discovered in the Mariner Group, northern Victoria Land, Antarctica. The Australian Ocean Data Network published this paleontological description, with metadata last updated in April 2026. The fauna is related to material from Kazakhstan, Siberia, North China, Australia, and North America.

Use Cases

• Classifying trilobite taxa like *Homagnostus cf. ultraobesus* and *Proceratopyge (P.) cf. liaotungensis* for taxonomic studies.
• Correlating the Eureka Formation's *Limestone Unit* biochronology with late Idamean (late Dresbachian) to early Franconian stages.
• Analyzing paleogeographic relationships by comparing the described *fauna* to assemblages from Kazakhstan, Siberia, and North America.
• Studying the stratigraphic context of the assemblage within the *Mariner Group (Bowers Supergroup)* in Antarctica.

Strengths

• Describes seven specifically determined trilobite taxa with full binomial names.
• Provides detailed stratigraphic context within the Eureka Formation's Limestone Unit at Eureka Spurs.

Limitations

• Sample size is limited to a single fossil assemblage from one location.
• The exact biochronological position of the fauna is noted as not finally established.
• Primary data is embedded within a scientific paper (PDF/HTML), not a structured data table.

Provenance

Source

Australian Ocean Data Network, sourced from data_gov_au.

Collection Method

Scientific description and analysis of fossil specimens collected from the field.

Time Range

Late Cambrian period, specifically post-Idamean (early Franconian).

Freshness

Metadata indicates a recent update in April 2026.

Geography

Eureka Spurs at the head of Mariner Glacier, northern Victoria Land, Antarctica.