Briscal Formation
| Briscal Formation | |
|---|---|
| Stratigraphic range: Ediacaran | |
| Type | Formation |
| Unit of | Conception Group |
| Underlies | |
| Overlies | Gaskiers Formation[1] |
| Thickness | 310 m - 1200 m(1,017 ft - 3,937 ft)[2][3] |
| Lithology | |
| Primary | Sandstone[1] |
| Other | Argillite, Siltstone, Shale[1] |
| Location | |
| Region | Newfoundland and Labrador |
| Country | Canada |
 Outcrop occurrence | |
The Briscal Formation is a geologic formation in Newfoundland and Labrador. It preserves fossils dating back to the Ediacaran period.
Paleobiota
[edit]Like the other overlying and underlying formations, the Briscal Formation represents a rare deep-marine paleoenviroment,[4] and preserves a few fossils, like the large Frondophyllas, only known from incomplete material, some of which sits at over a meter in length.[5]
Color key
|
Notes Uncertain or tentative taxa are in small text; |
Petalonamae
[edit]| Genus | Species | Notes | Images |
|---|---|---|---|
| Charniodiscus[3] |
|
Sessile frondose organism. |  |
| Culmofrons[6] |
|
Sessile frondose organism, junior synonym of Beothukis.[7] | |
| Beothukis[7] |
|
Sessile frondose organism. | |
| Fractofusus[3] |
|
Sessile spindle-like frondose organism. |  |
| Frondophyllas[5] |
|
Sessile tree-like frondose organism. | |
| Primocandelabrum[3] |
|
Sessile frondose organism. | |
| Trepassia[3] |
|
Sessile frondose organism. |  |
See also
[edit]
References
[edit]- Various Contributors to the Paleobiology Database. "Fossilworks: Gateway to the Paleobiology Database". Retrieved 17 December 2021.
- ^ a b c d e "GEOLOGY OF THE AVALON PENINSULA, NEWFOUNDLAND" (PDF).
- ^ Fitzgerald, Danielle M.; Narbonne, Guy M.; Pufahl, Peir K.; Dalrymple, Robert W. (June 2024). "The Mall Bay Formation (Ediacaran) and the protracted onset of the Gaskiers glaciation in Newfoundland, Canada". Precambrian Research. 405: 107369. doi:10.1016/j.precamres.2024.107369.
- ^ a b c d e "Wayback Machine" (PDF). www.gov.nl.ca.
- ^ Wood, Donald A; Dalrymple, Robert W; Narbonne, Guy M; Gehling, James G; Clapham, Matthew E (1 October 2003). "Paleoenvironmental analysis of the late Neoproterozoic Mistaken Point and Trepassey formations, southeastern Newfoundland". Canadian Journal of Earth Sciences. 40 (10): 1375–1391. doi:10.1139/e03-048.
- ^ a b Bamforth, Emily L.; Narbonne, Guy M. (November 2009). "New ediacaran rangeomorphs from Mistaken Point, Newfoundland, Canada". Journal of Paleontology. 83 (6): 897–913. doi:10.1666/09-047.1.
- ^ Laflamme, Marc; Flude, Lija I.; Narbonne, Guy M. (March 2012). "Ecological tiering and the evolution of a stem: the oldest stemmed frond from the Ediacaran of Newfoundland, Canada". Journal of Paleontology. 86 (2): 193–200. doi:10.1666/11-044.1.
- ^ a b Liu, Alexander G.; Matthews, Jack J.; McIlroy, Duncan (January 2016). "The B eothukis / C ulmofrons problem and its bearing on E diacaran macrofossil taxonomy: evidence from an exceptional new fossil locality". Palaeontology. 59 (1): 45–58. doi:10.1111/pala.12206. hdl:1983/605900ac-5976-4d0a-a4a7-dfc6aefd1566.
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