Revision of Silurian vertebrate biozones and their correlation with the conodont succession
The first vertebrate-based subdivisions of Silurian strata were mainly drawn on material from outcrops in Britain and drill cores from the southern Baltic. Nearly twenty years ago the first vertebrate biozonal scheme was developed on the basis of vertebrate distribution in several continuous drill c...
Published in: | Estonian Journal of Earth Sciences |
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Language: | English |
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Estonian Academy Publishers
2013
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Online Access: | https://doi.org/10.3176/earth.2013.15 https://doaj.org/article/3d5115d830c24534943c29cc9161cf4d |
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ftdoajarticles:oai:doaj.org/article:3d5115d830c24534943c29cc9161cf4d 2023-05-15T15:02:03+02:00 Revision of Silurian vertebrate biozones and their correlation with the conodont succession Tiiu Märss Peep Männik 2013-11-01T00:00:00Z https://doi.org/10.3176/earth.2013.15 https://doaj.org/article/3d5115d830c24534943c29cc9161cf4d EN eng Estonian Academy Publishers http://www.kirj.ee/public/Estonian_Journal_of_Earth_Sciences/2013/issue_4/earth-2013-4-181-204.pdf https://doaj.org/toc/1736-4728 https://doaj.org/toc/1736-7557 doi:10.3176/earth.2013.15 1736-4728 1736-7557 https://doaj.org/article/3d5115d830c24534943c29cc9161cf4d Estonian Journal of Earth Sciences, Vol 62, Iss 4, Pp 181-204 (2013) agnathans fishes conodonts biostratigraphy Silurian Baltic region British Isles Canada Russian Arctic Geology QE1-996.5 article 2013 ftdoajarticles https://doi.org/10.3176/earth.2013.15 2022-12-31T14:55:48Z The first vertebrate-based subdivisions of Silurian strata were mainly drawn on material from outcrops in Britain and drill cores from the southern Baltic. Nearly twenty years ago the first vertebrate biozonal scheme was developed on the basis of vertebrate distribution in several continuous drill core sections in the northern Baltic. This paper presents a new scheme in which many new data on vertebrate distribution from the Baltica (Baltic region, NW Russia), Avalonia (southern Britain, eastern Canada), Laurentia (northern Canada, Greenland, Scotland) and Kara (Arctic Russia) palaeocontinents have been used. All the zones have been defined, and the geographical distribution and the reference stratum and locality for each zone have been given. The Llandovery part of the succession contains the Valyalepis crista, Loganellia aldridgei and L. scotica zones; the Wenlock part is represented by the Archipelepis bifurcata/Arch. turbinata, L. grossi, Overia adraini, L. einari and Paralogania martinssoni zones. The Par. martinssoni Zone continues in the Ludlow and is followed by the Phlebolepis ornata, Phl. elegans, Andreolepis hedei, Thelodus sculptilis and T. admirabilis zones. The last zone continues in the lower Přidoli and is followed by the Nostolepis gracilis, Poracanthodes punctatus and Trimerolepis timanica zones. The L. aldridgei and Arch. bifurcata zones are new, and the Arch. turbinata and O. adraini faunas have been raised from ‘faunal succession units’ to zones. The geographically widely distributed L. grossi Zone in the upper Sheinwoodian and the Par. martinssoni Zone in the upper Homerian–lowermost Gorstian allow the integration of regional successions into one Generalized Vertebrate Zonal Scheme. Possible correlations of conodont and vertebrate biozones, and gaps in sedimentation in the northern East Baltic Silurian sequence have been discussed, the most extensive hiatus being between the Paadla and Kuressaare stages. Article in Journal/Newspaper Arctic Greenland Directory of Open Access Journals: DOAJ Articles Arctic Canada Greenland The Arch ENVELOPE(-55.981,-55.981,49.700,49.700) Estonian Journal of Earth Sciences 62 4 181 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
agnathans fishes conodonts biostratigraphy Silurian Baltic region British Isles Canada Russian Arctic Geology QE1-996.5 |
spellingShingle |
agnathans fishes conodonts biostratigraphy Silurian Baltic region British Isles Canada Russian Arctic Geology QE1-996.5 Tiiu Märss Peep Männik Revision of Silurian vertebrate biozones and their correlation with the conodont succession |
topic_facet |
agnathans fishes conodonts biostratigraphy Silurian Baltic region British Isles Canada Russian Arctic Geology QE1-996.5 |
description |
The first vertebrate-based subdivisions of Silurian strata were mainly drawn on material from outcrops in Britain and drill cores from the southern Baltic. Nearly twenty years ago the first vertebrate biozonal scheme was developed on the basis of vertebrate distribution in several continuous drill core sections in the northern Baltic. This paper presents a new scheme in which many new data on vertebrate distribution from the Baltica (Baltic region, NW Russia), Avalonia (southern Britain, eastern Canada), Laurentia (northern Canada, Greenland, Scotland) and Kara (Arctic Russia) palaeocontinents have been used. All the zones have been defined, and the geographical distribution and the reference stratum and locality for each zone have been given. The Llandovery part of the succession contains the Valyalepis crista, Loganellia aldridgei and L. scotica zones; the Wenlock part is represented by the Archipelepis bifurcata/Arch. turbinata, L. grossi, Overia adraini, L. einari and Paralogania martinssoni zones. The Par. martinssoni Zone continues in the Ludlow and is followed by the Phlebolepis ornata, Phl. elegans, Andreolepis hedei, Thelodus sculptilis and T. admirabilis zones. The last zone continues in the lower Přidoli and is followed by the Nostolepis gracilis, Poracanthodes punctatus and Trimerolepis timanica zones. The L. aldridgei and Arch. bifurcata zones are new, and the Arch. turbinata and O. adraini faunas have been raised from ‘faunal succession units’ to zones. The geographically widely distributed L. grossi Zone in the upper Sheinwoodian and the Par. martinssoni Zone in the upper Homerian–lowermost Gorstian allow the integration of regional successions into one Generalized Vertebrate Zonal Scheme. Possible correlations of conodont and vertebrate biozones, and gaps in sedimentation in the northern East Baltic Silurian sequence have been discussed, the most extensive hiatus being between the Paadla and Kuressaare stages. |
format |
Article in Journal/Newspaper |
author |
Tiiu Märss Peep Männik |
author_facet |
Tiiu Märss Peep Männik |
author_sort |
Tiiu Märss |
title |
Revision of Silurian vertebrate biozones and their correlation with the conodont succession |
title_short |
Revision of Silurian vertebrate biozones and their correlation with the conodont succession |
title_full |
Revision of Silurian vertebrate biozones and their correlation with the conodont succession |
title_fullStr |
Revision of Silurian vertebrate biozones and their correlation with the conodont succession |
title_full_unstemmed |
Revision of Silurian vertebrate biozones and their correlation with the conodont succession |
title_sort |
revision of silurian vertebrate biozones and their correlation with the conodont succession |
publisher |
Estonian Academy Publishers |
publishDate |
2013 |
url |
https://doi.org/10.3176/earth.2013.15 https://doaj.org/article/3d5115d830c24534943c29cc9161cf4d |
long_lat |
ENVELOPE(-55.981,-55.981,49.700,49.700) |
geographic |
Arctic Canada Greenland The Arch |
geographic_facet |
Arctic Canada Greenland The Arch |
genre |
Arctic Greenland |
genre_facet |
Arctic Greenland |
op_source |
Estonian Journal of Earth Sciences, Vol 62, Iss 4, Pp 181-204 (2013) |
op_relation |
http://www.kirj.ee/public/Estonian_Journal_of_Earth_Sciences/2013/issue_4/earth-2013-4-181-204.pdf https://doaj.org/toc/1736-4728 https://doaj.org/toc/1736-7557 doi:10.3176/earth.2013.15 1736-4728 1736-7557 https://doaj.org/article/3d5115d830c24534943c29cc9161cf4d |
op_doi |
https://doi.org/10.3176/earth.2013.15 |
container_title |
Estonian Journal of Earth Sciences |
container_volume |
62 |
container_issue |
4 |
container_start_page |
181 |
_version_ |
1766334050167947264 |