| Terreneuvian | ||||||||||||||||||||||||||||||||||||||
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 Map of Earth as it appeared c. 540 million years ago during the earliest Terreneuvian, Fortunian epoch[citation needed] | ||||||||||||||||||||||||||||||||||||||
 Delegates from the Ichnia 2012 conference inspect the Global Boundary Stratotype Section and Point (GSSP) for the Ediacaran-Cambrian boundary at Fortune Head Ecological Reserve, Newfoundland, Canada. | ||||||||||||||||||||||||||||||||||||||
| Chronology | ||||||||||||||||||||||||||||||||||||||
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| Etymology | ||||||||||||||||||||||||||||||||||||||
| Name formality | Formal | |||||||||||||||||||||||||||||||||||||
| Name ratified | 2007[2] | |||||||||||||||||||||||||||||||||||||
| Former name(s) | Cambrian Stage 1 | |||||||||||||||||||||||||||||||||||||
| Usage information | ||||||||||||||||||||||||||||||||||||||
| Celestial body | Earth | |||||||||||||||||||||||||||||||||||||
| Regional usage | Global (ICS) | |||||||||||||||||||||||||||||||||||||
| Time scale(s) used | ICS Time Scale | |||||||||||||||||||||||||||||||||||||
| Definition | ||||||||||||||||||||||||||||||||||||||
| Chronological unit | Age | |||||||||||||||||||||||||||||||||||||
| Stratigraphic unit | Stage | |||||||||||||||||||||||||||||||||||||
| First proposed by | Ed Landing, 2007[3] | |||||||||||||||||||||||||||||||||||||
| Time span formality | Formal | |||||||||||||||||||||||||||||||||||||
| Lower boundary definition | Appearance of the Ichnofossil Treptichnus pedum | |||||||||||||||||||||||||||||||||||||
| Lower boundary GSSP | Fortune Head section, Newfoundland, Canada 47°04′20″N 55°51′52″W / 47.072163°N 55.864398°W | |||||||||||||||||||||||||||||||||||||
| Lower GSSP ratified | 2007 (as base of Terreneuvian and Fortunian)[2] | |||||||||||||||||||||||||||||||||||||
| Upper boundary definition | Not formally defined | |||||||||||||||||||||||||||||||||||||
| Upper boundary definition candidates | FAD of Trilobites | |||||||||||||||||||||||||||||||||||||
| Upper boundary GSSP candidate section(s) | None | |||||||||||||||||||||||||||||||||||||
The Terreneuvian is the lowermost and oldest series of the Cambrian geological system.[2] Its base is defined by the first appearance datum of the trace fossil Treptichnus pedum around 538.8 million years ago. Its top is defined as the first appearance of trilobites in the stratigraphic record around 521 million years ago.[4] This series' name was formally accepted by the International Commission on Stratigraphy in 2007.[2]
The Fortunian stage and presently unnamed Cambrian Stage 2 are the stages within this series. The Terreneuvian corresponds to the pre-trilobitic Cambrian.[5]
The name Terreneuvian is derived from Terre Neuve, the French name for the island of Newfoundland, Canada, where many rocks of this age are found, including the type section.[2][4]
- ^ "Chart/Time Scale". stratigraphy.org. International Commission on Stratigraphy.
- ^ a b c d e Landing, Ed; Peng, Shanchi; Babcock, Loren; Geyer, Gerd; Moczydlowska-Vidal, Malgorzata (December 2007). "Global standard names for the Lowermost Cambrian Series and Stage". Episodes. 30 (4): 287–289. doi:10.18814/epiiugs/2007/v30i4/004. Retrieved 2024-03-31.
- ^ "GSSPs - The Cambrian System 2019". International Commission on Stratigraphy. Archived from the original on 2023-07-21. Retrieved 2024-03-31.
- ^ a b Shan-Chi Peng, Babcock Loren (2011). "Continuing progress on chronostratigraphic subdivision of the Cambrian System" (PDF). Bulletin of Geosciences. 86 (3): 391–396. doi:10.3140/bull.geosci.1273. ISSN 1214-1119. Archived from the original (PDF) on 2023-07-16.
- ^ Li, G. "The Fad of Watsonella Crosbyi". Archived from the original on 2017-01-16.