Upper Triassic Reef Fossils from Yukon Lewes River Group

Paleontological samples from five carbonate localities within the Lewes River Group contain corals, sponges, brachiopods, bivalves, disjectoporids, and spongiomorphs. The dataset, published by the Government of Yukon, compares these fossils with fauna from Triassic reef deposits in Alaska, British Columbia, the western US, and Mexico. The data was last updated on April 17, 2026.

Use Cases

• Identify paleobiogeographical associations based on coral and bivalve species comparisons across terranes.
• Study reef complex development based on descriptions of the thickest Upper Triassic reef in the North American Cordillera.
• Analyze fossil assemblages based on the listed categories of corals, sponges, brachiopods, and bivalves.

Strengths

• Focuses on the thickest and best-developed Upper Triassic reef complex in the North American Cordillera.
• Compares fauna from five Yukon localities with deposits across Alaska, BC, the US, and Mexico.
• Identifies seven coral species common across multiple terranes.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Data formats are HTML and PDF, which may require parsing for structured analysis.

Provenance

Source

Government of Yukon

Collection Method

Paleontological field investigations and systematic analysis.

Time Range

Upper Triassic period.

Freshness

Last updated 2026-04-17 16:03:41.805561; freshness should be verified.

Geography

Whitehorse area, Yukon, Canada; comparisons include Alaska, British Columbia, western US, and Mexico.