Zobrazeno 1 - 10
of 18
pro vyhledávání: '"Viive Viira"'
Publikováno v:
Estonian Journal of Earth Sciences, Vol 71, Iss 1, Pp 44-60 (2022)
For years, the Ohesaare core section and its rich fossil assemblages have enticed researchers to suggest various ideas about Silurian stratigraphy in the East Baltic despite several sedimentary gaps occurring through the Ludlow interval in particular
Externí odkaz:
https://doaj.org/article/3a3a19d7197246e887c9e45ef0fbf67d
Publikováno v:
Estonian Journal of Earth Sciences, Vol 64, Iss 4, Pp 267-283 (2015)
The paper discusses the reliability of different biozones in terms of their synchroneity when crossing facies boundaries within a sedimentary basin. Graptolite biozones are the most trusted ones, but also biozones based on conodonts, chitinozoans and
Externí odkaz:
https://doaj.org/article/6b28049361a040388d035ec456a5f5a3
Publikováno v:
Estonian Journal of Earth Sciences, Vol 61, Iss 4, Pp 210-226 (2012)
Darriwilian conodonts have been studied in numerous sections of Baltoscandia, but few data are available from the classical outcrop area in northern Estonia. In this paper we report the succession of Darriwilian conodonts and chitinozoans from the be
Externí odkaz:
https://doaj.org/article/85a7754e7ca540119c94ae97167dfaa5
Autor:
Helje Pärnaste, Viive Viira
Publikováno v:
Estonian Journal of Earth Sciences, Vol 61, Iss 4, Pp 205-209 (2012)
The lower boundary of the Second Stage of the Lower Ordovician Series, the Floian Stage, is defined by the first appearance of the graptolite Tetragraptus approximatus. In the stratotype section of Diabasbrottet at Hunneberg, southern Sweden, the bou
Externí odkaz:
https://doaj.org/article/5aa8bdf1c2bc42cca2e5e485020fbef0
Autor:
Peep Männik, Viive Viira
Publikováno v:
Estonian Journal of Earth Sciences, Vol 61, Iss 1, Pp 1-14 (2012)
The diversity data presented in this paper are based on recently revised collections of conodonts from outcrops (northern Estonia) and core sections of Estonia and western and northern Latvia. Based on variations in the abundance of taxa, four interv
Externí odkaz:
https://doaj.org/article/aa3ee4092a9f4966ac7986ec489369ce
Autor:
Viive Viira
Publikováno v:
Estonian Journal of Earth Sciences, Vol 60, Iss 1, Pp 1-21 (2011)
The distribution of conodonts in the Lower–Middle Ordovician beds was studied in five drill core sections of southeastern Estonia. Ten conodont zones and six subzones, from the Paroistodus proteus Zone to the Eoplacognathus lindstroemi Subzone, w
Externí odkaz:
https://doaj.org/article/ade42e3b7d4140c2829d06a07a2ff63f
Autor:
Viive Viira, Oskar Bremer, Axel Munnecke, Rein Einasto, Emilia Jarochowska, Rafał Nawrot, Peep Männik
Publikováno v:
Geology. 45:3-6
Hypersaline environments are commonly assumed to be barren of metazoans and therefore are avoided by paleontologists, yet a number of early Paleozoic jawless vertebrate groups specialized to live in such settings. Sampling bias against restricted set
Publikováno v:
GFF. 136:100-104
The Viki drill core is one of the reference sections for the Estonian bedrock succession, characterizing strata of Mid Ordovician through early Silurian age in the eastern part of the Baltoscandian basin. In this article, we present the hitherto miss
Autor:
Viive Viira, Peep Männik
Publikováno v:
Estonian Journal of Earth Sciences, Vol 61, Iss 1, Pp 1-14 (2012)
The diversity data presented in this paper are based on recently revised collections of conodonts from outcrops (northern Estonia) and core sections of Estonia and western and northern Latvia. Based on variations in the abundance of taxa, four interv
Autor:
Viive Viira
Publikováno v:
Estonian Journal of Earth Sciences, Vol 57, Iss 1, Pp 23-38 (2008)
More than 150 Ordovician and Early Silurian brachiopod species have been assigned to the genus Platystrophia King, 1850 mainly on the basis of their Spirifer-like shell exteriors. King's concept of the genus was based on Platystrophia biforata King,