Terreneuvian

Short description: First epoch of the Cambrian Period

Terreneuvian

538.8 ± 0.2 – ~521 Ma

PreЄ

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

Cambrian graphical timeline

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-540 --

-535 --

-530 --

-525 --

-520 --

-515 --

-510 --

-505 --

-500 --

-495 --

-490 --

-485 --

Ediacaran

Fortunian

"Stage 2"

"Stage 3"

"Stage 4"

Wuliuan

Drumian

Guzhangian

Paibian

Jiangshanian

"Stage 10"

Tremadocian

Orsten Fauna

Burgess Shale

Kaili biota

Archaeocyatha extinction

Emu Bay Shale

Sirius Passet biota

Chengjiang biota

First Trilobites

SSF diversification, first brachiopods & archaeocyatha

First halkieriids, mollusсs, hyoliths SSF

Baykonurian glaciation

Dresbachian extinction

Major Glacial period

Subdivision of the Cambrian according to the ICS, as of 2021.[1]
Vertical axis scale: millions of years ago

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 / 47.072163; -55.864398
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 541 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]

## Type locality

The type locality (GSSP) of the Terreneuvian is in Fortune Head, at the northern edge of the Burin Peninsula, Newfoundland, Canada ( [ ⚑ ] 47°04′34″N 55°49′52″W﻿ / ﻿47.0762°N 55.8310°W﻿ / 47.0762; -55.8310). The outcrops show a carbonate-siliciclastic succession which is mapped as the Chapel Island Formation. The formation is divided into the following members that are composed of peritidal sandstones and shales (Member 1), muddy deltaic and shelf sandstones and mudstones (Member 2A), laminated siltstones (Member 2B and 3) and mudstones and limestones of the inner shelf (Member 4). The Precambrian-Cambrian boundary lies 2.4 m above the base of the second member, which is the lowest occurrence of Treptichnus pedum. The traces can be seen on the lower surface of the sandstone layers. The first calcareous shelled skeletal fossils (Ladatheca cylindrica) are 400 m above the boundary. The first trilobites appear 1400 m above the boundary, which corresponds to the beginning of the Branchian Series (Series 2).[6]

## References

1. ↑ "Chart/Time Scale". International Commission on Stratigraphy. http://www.stratigraphy.org/index.php/ics-chart-timescale.
2. ↑ 2.0 2.1 2.2 2.3 2.4 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. https://www.researchgate.net/publication/254558720_Global_Standard_Names_for_the_Lowermost_Cambrian_Series_and_Stage. Retrieved 13 December 2020.
3. ↑ Landing, Ed. "THE BASE OF THE CAMBRIAN: TERRENEUVIAN SERIES AND FORTUNIAN STAGE". http://www.palaeontology.geo.uu.se/ISCS/ISCS_GSSPs.html.
4. ↑ 4.0 4.1 PENG, S.C. & BABCOCK, L.E. 2011. Continuing progress on chronostratigraphic subdivision of the Cambrian System. Bulletin of Geosciences 86(3), 391–396 (1 figure). Czech Geological Survey, Prague. ISSN 1214-1119.
5. ↑ Li, G.. "The Fad of Watsonella Crosbyi". http://www.casp.cam.ac.uk/meetings/meeting-20110612.
6. ↑ Brasier, Martin; John Cowie; Michael Taylor (1994). "Decision on the Precambrian-Cambrian boundary stratotype". Episodes 17 (1-2): 95–100. http://www.stratigraphy.org/GSSP/file46.pdf. Retrieved 14 September 2012.

## See also

* Stratigraphy of the Cambrian

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Geological history of Earth

Cenozoic era
(present–66.0 Mya)|

| Quaternary (present–2.588 Mya)|

* Holocene (present–11.784 kya)
* Pleistocene (11.784 kya–2.588 Mya)

|

Neogene (2.588–23.03 Mya)|

* Pliocene (2.588–5.333 Mya)
* Miocene (5.333–23.03 Mya)

Paleogene (23.03–66.0 Mya)|

* Oligocene (23.03–33.9 Mya)
* Eocene (33.9–56.0 Mya)
* Paleocene (56.0–66.0 Mya)

Mesozoic era
(66.0–251.902 Mya)|

| Cretaceous (66.0–145.0 Mya)|

* Late (66.0–100.5 Mya)
* Early (100.5–145.0 Mya)

|

Jurassic (145.0–201.3 Mya)|

* Late (145.0–163.5 Mya)
* Middle (163.5–174.1 Mya)
* Early (174.1–201.3 Mya)

Triassic (201.3–251.902 Mya)|

* Late (201.3–237 Mya)
* Middle (237–247.2 Mya)
* Early (247.2–251.902 Mya)

Paleozoic era
(251.902–541.0 Mya)|

| Permian (251.902–298.9 Mya)|

* Lopingian (251.902–259.8 Mya)
* Guadalupian (259.8–272.3 Mya)
* Cisuralian (272.3–298.9 Mya)

|

Carboniferous (298.9–358.9 Mya)|

* Pennsylvanian (298.9–323.2 Mya)
* Mississippian (323.2–358.9 Mya)

Devonian (358.9–419.2 Mya)|

* Late (358.9–382.7 Mya)
* Middle (382.7–393.3 Mya)
* Early (393.3–419.2 Mya)

Silurian (419.2–443.8 Mya)|

* Pridoli (419.2–423.0 Mya)
* Ludlow (423.0–427.4 Mya)
* Wenlock (427.4–433.4 Mya)
* Llandovery (433.4–443.8 Mya)

Ordovician (443.8–485.4 Mya)|

* Late (443.8–458.4 Mya)
* Middle (458.4–470.0 Mya)
* Early (470.0–485.4 Mya)

Cambrian (485.4–541.0 Mya)|

* Furongian (485.4–497 Mya)
* Miaolingian (497–509 Mya)
* Series 2 (509–521 Mya)
* Terreneuvian (521–541.0 Mya)

Proterozoic eon
(541.0 Mya–2.5 Gya)|

| Neoproterozoic (541.0 Mya–1 Gya)|

* Ediacaran (541.0–~635 Mya)
* Cryogenian (~635–~720 Mya)
* Tonian (~720 Mya–1 Gya)

|

Mesoproterozoic (1–1.6 Gya)|

* Stenian (1–1.2 Gya)
* Ectasian (1.2–1.4 Gya)
* Calymmian (1.4–1.6 Gya)

Paleoproterozoic (1.6–2.5 Gya)|

* Statherian (1.6–1.8 Gya)
* Orosirian (1.8–2.05 Gya)
* Rhyacian (2.05–2.3 Gya)
* Siderian (2.3–2.5 Gya)

Archean eon (2.5–4 Gya)|

| Eras|

* Neoarchean (2.5–2.8 Gya)
* Mesoarchean (2.8–3.2 Gya)
* Paleoarchean (3.2–3.6 Gya)
* Eoarchean (3.6–4 Gya)

|

Hadean eon (4–4.6 Gya)|

|  |

|

kya = thousands years ago. Mya = millions years ago. Gya = billions years ago.
See also: Geologic time scale

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