LDC-156.5, Fortune North [Chapel Island Fm] (Cambrian of Canada)

Also known as SSF 65.24

Where: Newfoundland and Labrador, Canada (47.1° N, 55.9° W)

• Paleocoordinates: 66.8° S, 125.2° W (Wright 2013)

• 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 top of the regional section, at 156.5 m, near top of Member 4.

• bed-level stratigraphic resolution

Environment/lithology: peritidal; lithified, oncoidal limestone

• ENVIRONMENT: Peritidal.
• SPECIFIC LITHOLOGY: Bedded limestones with oncolites and mud-cracked stromatolitic laminae. 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: bulk, surface (in situ), chemical,

• 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 87353: authorized by Austin Hendy, entered by Austin Hendy on 15.03.2009

Creative Commons license: CC0 (CC0)

Taxonomic list

• COVERAGE: Exhaustive for problematica, coelosclerotophorans, hyoliths, molluscs, tommotiids, and protoconodonts. NOMENCLATURE: Authoritative publication, with species-resolution identifications, and modern nomenclature.
Brachiopoda
 Tommotiida - Lapworthellidae
Hyolitha
 Orthothecida - Allathecidae
Orthothecimorpha
 Circothecida -
Helcionelloida
  - Stenothecidae
Watsonella crosbyi Grabau 1900
  - Helcionellidae
Anabarella plana Vostokova 1962
? Bemella vonbitteri n. sp. Landing et al. 1989
? Archaeospira avalonensis n. sp. Landing et al. 1989
 Pelagiellida - Aldanellidae
Aldanella attleborensis Shaler and Foerste 1888