Also known as SSF 65.20
Where: Newfoundland and Labrador, Canada (47.0° N, 56.0° W: paleocoordinates 85.7° S, 31.5° W)
• coordinate based on nearby landmark
• small collection-level geographic resolution
When: Chapel Island Formation, Nemakit-Daldynian (538.8 - 525.5 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 the overlying strata as post-Nemakit-Daldynian and pre-Tommotian; "Ladatheca" cylindrica zone; here placed in Nemakit-Daldynian, until clearer data are available. STRATIGRAPHIC POSITION: From the "Ladatheca" cylindrica zone, in the lower part of the regional section, at 104.0 m, within unknown part of Member 3.
• bed-level stratigraphic resolution
Environment/lithology: deep subtidal shelf; lithified, nodular, pyritic, green mudstone
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 87347: authorized by Austin Hendy, entered by Austin Hendy on 15.03.2009
Creative Commons license: CC BY (attribution)
Taxonomic list
Orthothecimorpha | |
"Ladatheca" cylindrica Grabau 1900 |