Late Middle Cambrian trilobites from Trial Ridge, southwestern Tasmania

Jago, JB; Brown, AV

doi:10.26749/rstpp.135.1

Cited by 16 publications

(21 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This view contrasts with evidence published by many specialists, who have long noted that many agnostoids have similar morphologies and similar ranges of morphology in collections made from widely separated areas of the world (e.g. Daily & Jago 1975;Rushton 1978;Ergaliev 1980Ergaliev , 1983Lu & Lin 1980Robison 1982Robison , 1984Robison , 1994Shergold et al 1990;Peng 1992;Pratt 1992;Shergold & Laurie 1997;Peng & Robison 2000;Ahlberg 2003;Choi et al 2004;Peng et al 2004Peng et al , 2009Peng et al , 2012cPeng & Babcock 2005;Babcock et al 2007;Jago & Cooper 2007;Lazarenko et al 2008aLazarenko et al , b, 2011Terfelt & Ahlberg 2010;Terfelt et al 2011;Ahlberg & Terfelt 2012). Evidence of species that were broadly distributed in open-shelf lithofacies accords well with the interpretation that many agnostoids, at least in their juvenile stages, were nektic or pelagic.…”

Section: Transferred the Species Tomentioning

confidence: 60%

Intraspecific variation and taphonomic alteration in the Cambrian (Furongian) agnostoid Lotagnostus americanus: new information from China

Peng¹,

Babcock²,

Zhu³

et al. 2015

Bull. Geosci.

View full text Add to dashboard Cite

Section: Transferred the Species Tomentioning

confidence: 60%

Intraspecific variation and taphonomic alteration in the Cambrian (Furongian) agnostoid Lotagnostus americanus: new information from China

Peng¹,

Babcock²,

Zhu³

et al. 2015

Bull. Geosci.

View full text Add to dashboard Cite

“…cf. A. laiwuensis (Lorenz, 1906), Clavagnostus trispinus Yang in Zhou et al, 1977, Diplagnostus planicauda (Angelin, 1851), Diplagnostus sp., Hypagnostus brevifrons (Angelin, 1851), Lejopyge acantha Robison, 1984, ?Pseudophalacroma ovale Yang, 1982, Ptychagnostus aculeatus (Angelin, 1851, Tomagnostella exsculpta (Angelin, 1851), Utagnostus neglectus Jago, 1976a, and Valenagnostus imitans? The associated polymerid trilobites in our new collections include Chatiania?…”

Section: Biostratigraphy and Global Correlationmentioning

confidence: 98%

Cambrian Trilobites from the Parahio and Zanskar Valleys, Indian Himalaya

et al. 2009

View full text Add to dashboard Cite

New collections of trilobites from the type section of the Parahio Formation in the Parahio Valley, Spiti, and from the Parahio, Karsha, and Kurgiakh formations in the Zanskar Valley, permit biozonation based on material precisely located within measured stratigraphic sections. Specimens preserved in limestone with mild tectonic deformation clarify the features of several Himalayan taxa known previously only from severely deformed specimens preserved in shale. A total of 75 trilobite taxa from the Cambrian of Spiti and Zanskar can be referred, questionably at least, at the generic level or below, and 61 of these are present in our new collections. This new material is assigned with confidence to 29 existing species, and to 12 new species. Three new genera,Haydenaspis, Bhargavia, andHimalisania, are established; new species includeHaydenaspis parvatya, Prozacanthoides lahiri, Probowmania bhatti, Xingrenaspis parthiva, X. shyamalae, Bhargavia prakritika, Kaotaia prachina, Gunnia smithi, Sudanamonocarina sinindica, Proasaphiscus simoni, Koldinia odelli, andTorifera jelli. Ten additional Himalayan forms are assigned at the generic level only, and another 11 are questionably assigned to genera or species. The zonation proposed includes 6 zones and 3 levels, including theHaydenaspis parvatyalevel, theOryctocephalus indicuslevel, theKaotaia prachinaZone, theParamecephalus defossusZone, theOryctocephalus salteriZone, theIranoleesia buteslevel, theSudanomocarina sinindicaZone, theLejopyge acanthaZone, and theProagnostus bulbusZone. The sections span from the upper part of the informal Stage 4, Series 2 of the Cambrian System, about 511 Ma old, to theProagnostus bulbuszone of the Guzhangian Stage near the top of Series 3, dated at about 501 Ma. This time interval is represented by about 2000 m of section, which is thick compared to similar intervals elsewhere and is consistent with high rates of sedimentation along the Himalayan margin at the time. The fauna resembles others from equatorial peri-Gondwanaland, with closest similarity to that of South China. It also bears strong affinity to the North China fauna. Juvenile trilobites are described for the first time from India. A new Chinese species,Monanocephalus liquani, is also described.

show abstract

“…L. armata is a cosmopolitan agnostoid species and is used as index fossil of eponymous zone in western Zhejiang, Tarim and southern Kazakhstan [15,37,38] . In the Cambrian sections in western Hunan, western Zhejinag, Tasmania and southern Kazakhstan, the FAD of the species is older than that of L. laevigata [16,29,38,39] .…”

Section: The Revised Cambrian Biostratigraphic Succession Of South Chinamentioning

confidence: 99%

The newly-developed Cambrian biostratigraphic succession and chronostratigraphic scheme for South China

Shanchi

2009

Chin. Sci. Bull.

View full text Add to dashboard Cite

Biostratigraphy and chronostratigraphy are common means of subdividing rock strata. The biostratigraphic succession and chronostratigraphic scheme are regarded as the basis for the subdivision and correlation of regional and global stratigraphic units. This paper reviews research on the biostratigraphy and chronostratigraphy carried out in the Jiangnan Slope Belt, South China since 1978, and, in particular, the biostratigraphic succession and chronostratigraphic scheme developed in the last decade. The updated biostratigraphic succession of South China includes 36 biozones, the base of each of which is defined by the first appearance of a single taxon (index fossil), and a poorly fossiliferous interzone. The updated chronostratigraphic scheme of South China comprises 4 series and 10 stages, embracing 3 global chronostratigraphic units, the Guzhangian Stage, Furongian Series, and Paibian Stage, and 2 GSSPs, all of which are erected in northwestern Hunan and 2 International Tie Points recognized in sections also in northwestern Hunan and each was accepted by the International Subcommission on Cambrian Stratigraphy for defining the base of the global stage. The biostratigraphic and chronostratigraphic systems are recognized as Chinese standards both domestically and worldwide. Future research is suggested for improving the two sets of stratigraphic standards.

show abstract

Late Middle Cambrian trilobites from Trial Ridge, southwestern Tasmania

Cited by 16 publications

References 12 publications

Intraspecific variation and taphonomic alteration in the Cambrian (Furongian) agnostoid Lotagnostus americanus: new information from China

Intraspecific variation and taphonomic alteration in the Cambrian (Furongian) agnostoid Lotagnostus americanus: new information from China

Cambrian Trilobites from the Parahio and Zanskar Valleys, Indian Himalaya

The newly-developed Cambrian biostratigraphic succession and chronostratigraphic scheme for South China

Contact Info

Product

Resources

About