Terreneuvian
Appearance
Terreneuvian | |
---|---|
hyoliths SSF |
← |
← | Dresbachian extinction |
Major Glacial period |
Subdivision of the Cambrian according to the
The Terreneuvian is the lowermost and oldest
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
GSSP
The type locality (
trilobites appear 1400 m above the boundary, which corresponds to the beginning of the Branchian Series (Series 2).[6]
Major events
The second phase of the
metazoan lineages appeared in this epoch. However, deuterostomes are absent in this interval.[7]
See also
References
- ^ "International Chronostratigraphic Chart" (PDF). International Commission on Stratigraphy. December 2024. Retrieved January 2, 2025.
- ^ . 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.
- ^ 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.
- (PDF) from the original on 2023-06-20. Retrieved 2024-03-31.
- doi:10.1016/j.gr.2013.09.001.)
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: CS1 maint: multiple names: authors list (link
External links
- "GSSP at the base of the Phanerozoic Eonothem, Paleozoic Erathem, Cambrian System, Terreneuvian Series, and Fortunian Stage". timescalefoundation.org. Archived from the original on 2022-05-26.
- "GSSP Table - Paleozoic Era". Archived from the original on 2023-10-08.
- "GSSPs - The Cambrian System 2019". International Commission on Stratigraphy. Archived from the original on 2023-07-21.
- "ChronostratChart2018-08" (PDF). International Commission on Stratigraphy. Archived from the original (PDF) on 31 July 2018.