Where: Nunavut, Canada (75.8° N, 94.5° W: paleocoordinates 3.5° N, 32.7° W)
• coordinate estimated from map
• local area-level geographic resolution
When: Monograptus riccartonensis zone, Cape Phillips Formation, Sheinwoodian (433.4 - 430.5 Ma)
• Rohr et al.: "All of the localities are from the Monograptus riccartonensis Graptolite Zone within the Cape Phillips Formation..."
•Zhang: According to author, material is from between the murchisoni and lundgreni zones. This would make it Sheinwoodian, although author simply refers to it as Wenlockian.
• bed-level stratigraphic resolution
Environment/lithology: slope; shelly/skeletal limestone and calcareous shale
•SEP environmental call based on given info and regional context.
•Zhang: "...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
•Zhang: "..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
• Combined localities GSC C12272, C22184, C22187, and Perry localities BH-1-348,358,362,368,520, and 540.
•Wagner broke this up into individual localities.
Primary reference: D. M. Rohr, A.J. Boucot, and D.G. Perry. 1981. Silurian (Wenlockian) gastropods from Baillie-Hamilton Island, Canadian Arctic. Journal of Paleontology 55(2):331-339 [M. Foote/M. Foote/P. Wagner]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 26009: authorized by Michael Foote, entered by Michael Foote on 30.09.2002, edited by Pete Wagner
Creative Commons license: CC BY (attribution)