Middle Ordovician Conodont and Fish Fossil Data from Amadeus Basin

Fossil data from the Stairway Sandstone formation provides evidence for early arandaspid fish and enables high-resolution international biozonation correlation. The dataset includes an abundant and well-preserved micro-vertebrate and conodont fauna from a field sample. It was contributed by the Australian Ocean Data Network and last updated in April 2026.

Use Cases

• Correlate stratigraphic units using conodont biozonation schemes referenced in the data.
• Study the morphology and distribution of early arandaspid fish fossils described in the documentation.
• Analyze the paleoenvironment of shallow marine siliciclastic sediments based on described fossil assemblages.
• Support hydrocarbon prospectivity assessments for the Stairway Sandstone unit using fossil indicator data.

Strengths

• Contains well-preserved fossil data enabling high-resolution international biozonation correlation.
• Documents early vertebrate (arandaspid fish) fossils from the Middle Ordovician period.

Limitations

• Sample size and specific row/column counts are unknown.
• Data is presented in PDF format, requiring extraction for computational analysis.
• The unit's age is not directly dated, relying on biozonation for correlation.

Provenance

Source

Australian Ocean Data Network.

Collection Method

Field sample collection from the uppermost Stairway Sandstone.

Time Range

Middle Ordovician period.

Freshness

Last updated in April 2026.

Geography

Amadeus Basin, Australia.