Estinzione di massa del Permiano-Triassico (Italian Wikipedia)

Analysis of information sources in references of the Wikipedia article "Estinzione di massa del Permiano-Triassico" in Italian language version.

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Botha, J., and Smith, R.M.H., Lystrosaurus species composition across the Permo–Triassic boundary in the Karoo Basin of South Africa, in Lethaia, vol. 40, 2007, pp. 125-137, DOI:10.1111/j.1502-3931.2007.00011.x. URL consultato il 2 luglio 2008 (archiviato dall'url originale il 16 dicembre 2012). Full version online at Lystrosaurus species composition across the Permo–Triassic boundary in the Karoo Basin of South Africa (PDF), su nasmus.co.za. URL consultato il 2 luglio 2008 (archiviato dall'url originale il 10 settembre 2008).

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Wang, S.C., Everson, P.J., Confidence intervals for pulsed mass extinction events, in Paleobiology, vol. 33, n. 2, 2007, pp. 324-336, DOI:10.1666/06056.1.
Twitchett RJ Looy CV Morante R Visscher H & Wignall PB, Rapid and synchronous collapse of marine and terrestrial ecosystems during the end-Permian biotic crisis, in Geology, vol. 29, n. 4, 2001, pp. 351-354, DOI:10.1130/0091-7613(2001)029<0351:RASCOM>2.0.CO;2.
Shen, S., and Shi, G.R., Paleobiogeographical extinction patterns of Permian brachiopods in the Asian-western Pacific region, in Paleobiology, vol. 28, 2002, pp. 449-463, DOI:10.1666/0094-8373(2002)028<0449:PEPOPB>2.0.CO;2.
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Twitchett RJ, Looy CV, Morante R, Visscher H, Wignall PB, Rapid and synchronous collapse of marine and terrestrial ecosystems during the end-Permian biotic crisis, in Geology, vol. 29, n. 4, 2001, pp. 351-354, DOI:10.1130/0091-7613(2001)029%3C0351:RASCOM%3E2.0.CO;2.
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Koeberl K, Farley KA, Peucker-Ehrenbrink B, Sephton MA, Geochemistry of the end-Permian extinction event in Austria and Italy: No evidence for an extraterrestrial component, in Geology, vol. 32, n. 12, 2004, pp. 1053-1056, DOI:10.1130/G20907.1.
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(EN) W.B. Saunders, E. Greenfest-Allen, D. M. Work, S. V. Nikolaeva, Morphologic and taxonomic history of Paleozoic ammonoids in time and morphospace, in Paleobiology, gennaio 2008, pp. 128-154, DOI:10.1666/07053.1. URL consultato il 21 febbraio 2012.

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Sues e Fraser, p. 84. (EN) Hans-Dieter Sues, Nicholas C. Fraser, Triassic Life on Land: The Great Transition, Columbia University Press, 2010, ISBN 978-0-231-13522-1.
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"Permian–Triassic Extinction - Volcanism", su hoopermuseum.earthsci.carleton.ca.

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