ammonites
GSC C12272, Baillie-Hamilton Island (Silurian of Canada)

Also known as Brachiopods, Cape Phillips Formation

Where: Nunavut, Canada (75.8° N, 94.5° W: paleocoordinates 1.9° N, 30.7° W)

• coordinate estimated from map

• local area-level geographic resolution

When: Monograptus riccartonensis zone, Cape Phillips Formation, Sheinwoodian (428.2 - 426.2 Ma)

• formation-level stratigraphic resolution

Environment/lithology: slope; shelly/skeletal limestone and calcareous shale

• "...Formation...represents the slope-to-basinal facies equivalent of coeval platform carbonates that occur to S and E..."

•SEP environmental call based on given info and regional context

• "..Formation consists of shale and thin bedded, laminated siltstone and limestone...Section [with faunas] broadly divisible into two lithofacies: a lower part about 25 m thick, consists mainly of medium grey, thin bedded argillaceous Lst that is variably dolomitic...and an upper part, about 65 m thick, consisting mainly of very dark grey, very thin bedded argillaceous Lst that is markedly bituminous and commonly planar laminated...These beds appear to represent sediment gravity flows that were derived from platform carbonates...some 10 km to the east. The brachiopods and conodonts were obtained from the bioclastic beds and are therefore presumed to be allochthonous."

Preservation: replaced with silica

Reposited in the GSC

Collection methods: bulk, hydrochloric

Primary reference: N. Zhang. 1989. Wenlockian (Silurian) brachiopods of the Cape Phillips Formation, Baillie Hamilton Island, Arctic Canada: part I. Palaeontographica Abteilung A 206(1-3):49-97 [M. Foote/M. Foote/P. Wagner] more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 26012: authorized by Michael Foote, entered by Michael Foote on 30.09.2002