Middle Ordovician Conodont and Fish Fossils from the Stairway Sandstone, Amadeus Basin

A paleontological dataset from the Australian Ocean Data Network, last updated in April 2026. It documents an abundant and well-preserved fauna of early arandaspid fish and conodont fossils from a field sample in the Middle Ordovician Stairway Sandstone. The fossils enable high-resolution correlation to international biozonation schemes and the unit is noted as a prospective hydrocarbon reservoir.

Use Cases

• Correlating regional stratigraphy based on conodont biozonation schemes mentioned in the description
• Studying early vertebrate evolution based on arandaspid fish fossil records
• Assessing hydrocarbon reservoir potential for the Larapinta Petroleum System referenced in the description

Strengths

• Data is associated with an abundant and well-preserved fossil fauna, as stated in the description.
• Fossils enable high-resolution correlation to international biozonation schemes.
• Dataset is hosted by the authoritative Australian Ocean Data Network.

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 single Amadeus Basin location.

Provenance

Source

Australian Ocean Data Network

Collection Method

Field sample collected from the uppermost Stairway Sandstone.

Time Range

Middle Ordovician period.

Freshness

Last updated 2026-04-10 21:37:06.420779; freshness should be verified.

Geography

Amadeus Basin, Australia.