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Due to the lack of biostratigraphically useful graptolites in the crinoidal and reefal Chicotte Formation on Anticosti Island (Québec, Canada), the precise chronostratigraphic position of the formation is not known. New stable carbon isotope and conodont data and a comparison with the detailed conodont distribution and d13C development in the Viki core (Estonia) suggest an early Telychian age (Pterospathodus eopennatus to P. a. angulatus zones) for at least the lower half of the formation. This interval is characterized by a small but distinct positive excursion in d13C, with peak values of + 3.2‰ and + 2.8‰ VPDB in the lowermost 10–15 m of the Chicotte Formation on Anticosti and in the Viki core, respectively.

Männik, Peep (2002): Conodonts in the Silurian of Severnaya Zemlya and Sedov archipelagos (Russia), with special reference to the genus Ozarkodina Branson & Mehl, 1933. Geodiversitas 24 (1): 77-97, DOI: http://doi.org/10.5281/zenodo.5375145

Männik, Peep (2002): Conodonts in the Silurian of Severnaya Zemlya and Sedov archipelagos (Russia), with special reference to the genus Ozarkodina Branson & Mehl, 1933. Geodiversitas 24 (1): 77-97, DOI: http://doi.org/10.5281/zenodo.5375145, {"references":["ALDRIDGE R. J. 1972. - Llandovery conodonts from the Welsh Borderland. Bulletin of the British Museum of Natural History, (Geology) 22: 127- 231.","ALDRIDGE R. J. 1979. - An upper Llandovery conodont fauna from Peary Land, eastern North Greenland. Rapport Gro/nlands Geologiske Underso/gelse 91: 7-23.","ALDRIDGE R. J. 1985. - Conodonts of the Silurian System from the British Isles, in HIGGINS A. C. & AUSTIN R. L. (eds), A Stratigraphical Index of Conodonts. Ellis Horwood, Chichester: 68-92.","ARMSTRONG H. A. 1990. - Conodonts from the Upper Ordovician-Lower Silurian carbonate platform of North Greenland. Gro/ nlands Geologiske Underso/gelse 159, 151 p.","BISCHOFF G. C. 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Männik, Peep, Menner, Vladimir V., Matukhin, Rostislav G., Kuršs, Visvaldis (2002): Silurian and Devonian strata on the Severnaya Zemlya and Sedov archipelagos (Russia). Geodiversitas 24 (1): 99-122, DOI: http://doi.org/10.5281/zenodo.5371197, {"references":["ABUSHIK A. F. 1982. - Ostracodes from the Samojlovich Formation, and from the Wenlock- Ludlow boundary interval on Severnaya Zemlya, in KABAN' KOV V. YA. & LAZARENKO N. P. (eds), Geologia Arkhipelaga Severnaya Zemlya. PGO \"Sevmorgeologiya\", Leningrad: 80-102 (in Russian).","ABUSHIK A. F. 1999. - Silurian ostracodes' in MATUKHIN R. G. & MENNER V. V. (eds)' Stratigrafiya silura i devona arkhipelaga Severnaya Zemlya. SNIIGGiMS' Novosibirsk: 89-94 (in Russian).","ABUSHIK A. F. in press. - The Silurian ostracodes from Severnaya Zemlya. Geodiversitas.","ABUSHIK A. F. & EVDOKIMOVA I. O. 1997. - Key intervals for ostracod correlation in different facies of the Lower Devonian of the Eurasian Arctic, in IVANOV A., WILSON M. V. 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