LDC-83.8, Fortune North [Chapel Island Fm] (Cambrian of Canada)

Also known as SSF 65.29

Where: Newfoundland and Labrador, Canada (47.1° N, 55.9° W: paleocoordinates 82.5° S, 51.2° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Chapel Island Formation, Tommotian (525.5 - 521.0 Ma)

• STRATIGRAPHIC RELATIONS: From Member 4 of the Chapel Island Fm, which overlies the Renconte Fm, and is overlain by the Random Fm. AGE: Unclear from Landing et al. (1989), who refers to this as post-Nemakit-Daldynian and pre-Tommotian; Watsonella crosbyi zone; here placed in Tommotian, until clearer data are available. STRATIGRAPHIC POSITION: From the Watsonella crosbyi zone, near the middle of the regional section, at 83.8 m, near base of Member 4.

• bed-level stratigraphic resolution

Environment/lithology: peritidal; lithified, nodular, red mudstone

• ENVIRONMENT: Peritidal.
• SPECIFIC LITHOLOGY: Microsparite nodules in red/purple mudstone. LITHIFICATION: Lithified, on the basis of facies description and preparation techniques.

Size classes: macrofossils, mesofossils, microfossils

Preservation: concretion, replaced with phosphate

Reposited in the ROM

Collection methods: surface (in situ),

• COLLECTOR: Not stated, but presumably Landing et al. REPOSITORY: Royal Ontario Museum (ROM).

Primary reference: E. Landing, P. Myrow, A. P. Benus and G. M. Narbonne. 1989. The Placentian Series: Appearance of the oldest skeletalized faunas in southeastern Newfoundland. Journal of Paleontology 63(6):739-769 [A. Hendy/A. Hendy]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 87359: authorized by Austin Hendy, entered by Austin Hendy on 15.03.2009

Creative Commons license: CC BY (attribution)

Taxonomic list

• COVERAGE: Exhaustive for problematica, coelosclerotophorans, hyoliths, molluscs, tommotiids, and protoconodonts. NOMENCLATURE: Authoritative publication, with species-resolution identifications, and modern nomenclature.
Helcionelloida
  - Stenothecidae
Watsonella crosbyi Grabau 1900
 Pelagiellida - Aldanellidae
Aldanella attleborensis Shaler and Foerste 1888
Orthothecimorpha
 Circothecida -