ammonites
Gascoyne Inlet, Devon Island (Silurian of Canada)

Also known as Reef 1742

Where: Northwest Territories, Canada (75.0° N, 86.0° W: paleocoordinates 2.4° S, 26.8° W)

• local area-level geographic resolution

When: Ludfordian (421.3 - 418.7 Ma)

• From topmost 7 m of Douro Fm., and the following horizons (m above base) of the Barrow Inlet Fm.: 0-7 m, 80-180 m, and 10-185 m.

• group of beds-level stratigraphic resolution

Environment/lithology: reef, buildup or bioherm; lithified, shelly/skeletal, argillaceous wackestone and lime mudstone

• small mudmounds, flanking rubbly argillaceous wackstone; reefal mudstone and flanking crinoidal wackstone, packestone and grainstone; coral-stromatoporoid biostrome; reefs and flankbeds.

Collection methods: surface (in situ), peel or thin section,

Primary reference: O. A. Dixon. 1998. Heliolitine corals of the topmost Douro and overlying formations (Upper Silurian), Canadian Arctic Islands. Journal of Paleontology 72(6):937-966 [J. Alroy/M. Sommers/W. Kiessling] more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 5790: authorized by John Alroy, entered by Mike Sommers on 02.12.1999

Creative Commons license: CC BY-NC-ND (attribution-noncommercial-no derivatives)