Siberia, the wandering northern terrane, and its changing geography through the Palaeozoic

Cocks, L. Robin M.; Torsvik, Trond H.

doi:10.1016/j.earscirev.2007.02.001

Cited by 300 publications

(199 citation statements)

References 67 publications

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“…Intense tectonism, including volcanism, took place in the latest Ediacaran and earliest Cambrian along the northern periphery of East Gondwana, where a rift-to-drift transition involved a number of Central Asian microcontinents (e.g., Zavkhan, TuvaMongolia, South Gobi, North Tien Shan). Tectonic and sedimentological analyses suggest that these blocks drifted from northwestern East Gondwana toward Siberia during that interval (KherAsKovA & others, 2003;cocKs & TorsviK, 2007). Paleomagnetic and paleontological data have further confirmed and constrained this scenario (ZhurAvlev & mAiDAnsKAYA, 1998;meTelKin & KAZAnsKiY, 2002;miKhAl'Tsev, KAZAnsKiY, & senniKov, 2002).…”

Section: Paleobiogeographymentioning

confidence: 81%

“…The Siberian Platform, the first center of archaeocyathan diversification (roZAnov, 1980), was located at low latitudes, mostly south of the paleoequator and was geographically inverted relative to its present position (cocKs & TorsviK, 2007).…”

Section: Paleobiogeographymentioning

confidence: 99%

“…Three sets of terranes are currently recognized in the archaeocyath-bearing regions of present Central Asia: Kazakhstan terrane group (Kazakhstan-TurkmenistanTajikistan-Kyrgyzstan), Altay Sayan-Transbaikalia-Mongolia terranes, and Far East terranes (KhAin & others, 2003;KherAsKovA & others, 2003;senniKov & others, 2004;cocKs & TorsviK, 2007;gorDienKo & others, 2007). Overall, Central Asia is a complex of accretionary (Altay, Sayans, Transbaikalia, Mongolia, Kazakhstan) and collisional terranes (northern China, southern Mongolia, Dzhungaria, southern Tien Shan, northern Pamir).…”

Section: Paleobiogeographymentioning

confidence: 99%

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Treatise Online, no. 38: Part E, Revised, Volume 4, Chapter 18: General features of the Archaeocyatha

Debrenne¹,

Zhuravlev²,

Kruse³

2012

TREON

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Section: Paleobiogeographymentioning

confidence: 81%

Section: Paleobiogeographymentioning

confidence: 99%

Section: Paleobiogeographymentioning

confidence: 99%

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Treatise Online, no. 38: Part E, Revised, Volume 4, Chapter 18: General features of the Archaeocyatha

Debrenne¹,

Zhuravlev²,

Kruse³

2012

TREON

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“…1) positioned relatively far from each other: Baltica, Laurentia, Siberia and Gondwana (Cocks & Torsvik 2002). Siberia was close to the equator in the tropical climatic zone (Cocks & Torsvik 2007). The echinoderm fauna of the Ordovician seas of this continent has not been studied in detail; however, it was probably relatively poor.…”

Section: Geographical Climatic and Sedimentological Features Of Ordomentioning

confidence: 99%

Sibling echinoderm taxa on isolated Ordovician continents: Problem of center of origin

Рожнов¹

2010

Bull. Geosci.

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Morphologically similar echinoderm genera are mostly known from the Ordovician of two isolated continents, Baltica and Laurentia, although these landmasses were strictly isolated biogeographically by the Iapetus Ocean and had different climates during the Early and Middle Ordovician. The morphological characters of most of these echinoderm genera exclude the possibility that Baltic genera evolved from Laurentian forms or vice versa and suggest that their common ancestral group was from a different region. I proposed to name such genera ‘sibling genera’, or twin genera by analogy with sibling species. Eocrinoid sibling genera are representatives of the cryptocrinitid-rhipidocystid clade. Baltic Paracryptocrinites and Cryptocrinites are sibling genera of Laurentian Columbocystis, Springerocystis and Foerstecystis, Baltic Rhipidocystis is a sibling genus of Laurentian Mandalacystis and Baltic Neorhipidocystis is sibling genus of Laurentian Batherocystis. It is assumed that North American platicystid paracrinoids, cryptocrinid and rhipidocystid eocrinoids evolved from a common ancestral eocrinoid, similar to Paracryptocrinites. Sibling genera are also known among other Ordovician echinoderms, for example, crinoids (hybocrinids), edrioasteroids (edrioblastoids) and rhombiferans. Some genera migrated from Baltica to Laurentia and vice versa. The temperate warm water seas of eastern Gondwana in the northern China-Australian region were a possible biogeographical center of origin, diversification or distribution of Laurentian and Baltic sibling genera. Biogeographical analysis of Baltic echinoderms shows that the Baltic Region could be viewed as a ‘museum’ or ‘storehouse’ for many of them, they immigrated and survived there for some considerable time, rather then a ‘cradle’, where they arose and from where they migrated to other continents

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“…This paper concentrates on the present-day territory of central Asia -NW Mongolia and the Tuva Republic -as well as central and southern parts of Eastern Siberia between the Yenisey and Lena rivers (Siberian platform), which is inferred to represent a united Siberian palaeocraton, an independent geological terrane that existed during the Palaeozoic (Cocks & Torsvik 2007). In the Silurian, it comprised not only a large area of modern Russia (including Altai, Salair, Sayan, Siberia and Tomsk) and the northwestern part of Mongolia, but also extended into northwestern China (e.g.…”

mentioning

confidence: 99%

Endemic thelodonts (Vertebrata: Thelodonti) from the Lower Silurian of central Asia and southern Siberia

Žigaitė

2013

Earth and Environmental Science Transactions of the Royal Socie

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New fossil vertebrate microremains from the Lower Silurian of NW Mongolia, Tuva and S Siberia have been discovered, and previous collections of thelodonts (Vertebrata: Thelodonti) from this region re-studied, figured and described, following recent advances in morphology and systematics of thelodont scales. As a result, six thelodont species are described here and attributed to two families and three genera. An emended diagnosis is given for each species. Morpohological scale varieties of each species are revised, and the squamation types are introduced to the species descriptions, resulting in newly grouped morphological sets of scales. The previously monotypic genus Talimaalepis Žigaitė, 2004, is proposed to contain two different species; therefore, two new combinations of morphological scale sets of two species are described for the first time. Both of them show transitional scale structure between the genera Loganellia (family Loganellidae) and Helenolepis (family Phlebolepididae). Two of the thelodont genera, Angaralepis and Talimaalepis, as well as all the six species, are endemic and not known anywhere else in the world. They are accompanied by a variety of other peculiar early vertebrates, such as mongolepids, two endemic genera of acanthodians, and putative galeaspids. This work enhances our knowledge of early Silurian vertebrate diversity, and provides evidence of regional palaeoenvironmental conditions and palaeogeographical relationships of the Siberia and Tuva terranes.

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Siberia, the wandering northern terrane, and its changing geography through the Palaeozoic

Cited by 300 publications

References 67 publications

Treatise Online, no. 38: Part E, Revised, Volume 4, Chapter 18: General features of the Archaeocyatha

Treatise Online, no. 38: Part E, Revised, Volume 4, Chapter 18: General features of the Archaeocyatha

Sibling echinoderm taxa on isolated Ordovician continents: Problem of center of origin

Endemic thelodonts (Vertebrata: Thelodonti) from the Lower Silurian of central Asia and southern Siberia

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