2017
DOI: 10.1111/let.12200
|View full text |Cite
|
Sign up to set email alerts
|

Cambrian trilobite biostratigraphy and its role in developing an integrated history of the Earth system

Abstract: One of the principal biostratigraphical tools used in the lower Palaeozoic, and especially the Cambrian System, is trilobites. Historically, both polymerids and agnostoids have commonly been included as ‘trilobite’ groups, although currently the question of whether they comprise a monophyletic group or are polyphyletic is unsettled. Beginning in the late 1800s, the base of the Cambrian System was marked by the lowest occurrence of olenelline trilobites. Discovery of a rich pre‐trilobite metazoan record in the … Show more

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...
3
1
1

Citation Types

0
24
0

Year Published

2017
2017
2023
2023

Publication Types

Select...
6
1
1

Relationship

1
7

Authors

Journals

citations
Cited by 36 publications
(24 citation statements)
references
References 163 publications
(445 reference statements)
0
24
0
Order By: Relevance
“…5), and in eastern Guizhou and western Hunan it is overlain by the agnostoid Ptychagnostus gibbus Zone of the Huaqiao Formation (Peng, 2009(Peng, , 2018. The Peronopsis taijiangensis Zone is correlatable with the Ptychagnotus praecurrens Zone of Laurentia, where the agnostoid Ptychagnotus praecurrens Zone, together with the overlying Ptychagnotus gibbus Zone, correlates with the upper half of the polymerid Oryctocephalus Zone (Robison and Babcock, 2011;Babcock et al, 2017). Ptychagnotus praecurrens is a widespread agnostoid trilobite, known from Sweden (Westergård, 1946;Weidner and Ebbestad, 2014;Ahlberg et al, 2019), England (Rushton, 1966), Russia (Siberia) (Egorova et al, 1976;Naimark, 2008;Shabanov et al,2008), Australia (Laurie, 2004;Kruse et al, 2009), the USA (Utah and Nevada) (Robison, 1982;Sundberg, 2007, Sundberg, 2011), and probably from Kazakhstan (Ergaliev and Ergaliev, 2008).…”
Section: Agnostoid Trilobite Biostratigraphymentioning
confidence: 99%
“…5), and in eastern Guizhou and western Hunan it is overlain by the agnostoid Ptychagnostus gibbus Zone of the Huaqiao Formation (Peng, 2009(Peng, , 2018. The Peronopsis taijiangensis Zone is correlatable with the Ptychagnotus praecurrens Zone of Laurentia, where the agnostoid Ptychagnotus praecurrens Zone, together with the overlying Ptychagnotus gibbus Zone, correlates with the upper half of the polymerid Oryctocephalus Zone (Robison and Babcock, 2011;Babcock et al, 2017). Ptychagnotus praecurrens is a widespread agnostoid trilobite, known from Sweden (Westergård, 1946;Weidner and Ebbestad, 2014;Ahlberg et al, 2019), England (Rushton, 1966), Russia (Siberia) (Egorova et al, 1976;Naimark, 2008;Shabanov et al,2008), Australia (Laurie, 2004;Kruse et al, 2009), the USA (Utah and Nevada) (Robison, 1982;Sundberg, 2007, Sundberg, 2011), and probably from Kazakhstan (Ergaliev and Ergaliev, 2008).…”
Section: Agnostoid Trilobite Biostratigraphymentioning
confidence: 99%
“…Babcock et al . (this issue) review the global use of trilobites in biostratigraphical and chronostratigraphical studies that have led to the development of the global series and stage nomenclature for the Cambrian System. Of the two series and five stages now ratified, apart from the Terreneuvian Series/Fortunian Stage base defined on a trace fossil, each of the other defined stage bases is identifiable primarily by the first appearance of a cosmopolitan agnostoid species.…”
Section: Papers In This Issuementioning
confidence: 99%
“…Seemingly insignificant and contrasting with the polymerid trilobites, agnostoids are characterized by a head region (cephalon) and a tail region (pygidium) of nearly equal size (e.g., Robison, 1975;Kaesler 1997;Babcock et al, 2017). These are, in turn, separated by two thoracic segments with tergites.…”
Section: Anatomy and Life Mode Of Agnostus Pisiformismentioning
confidence: 99%
“…Whilst agnostoids could grow to a maximum length exceeding a centimeter, they usually are less than 10 millimeters long (e.g., Robison, 1975;Kaesler, 1997;Babcock et al, 2017). Adult specimens of A. pisiformis may reach approximately 10 mm in total length (c. 4.5 mm for each shield).…”
Section: Anatomy and Life Mode Of Agnostus Pisiformismentioning
confidence: 99%
See 1 more Smart Citation