The importance of plankton and nekton distributions in Ordovician palaeogeographical reconstructions
Trilobites and brachiopods are the two main fossil groups that allowed construction of the first palaeogeographical maps for the early Palaeozoic. Together with the bivalves and ostracodes, the benthic elements of these fossil groups have proved to be of great palaeobiogeographical importance. For t...
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ftchinacscnigpas:oai:ir.nigpas.ac.cn:332004/716 2023-05-15T17:34:52+02:00 The importance of plankton and nekton distributions in Ordovician palaeogeographical reconstructions Servais, T Blieck, A Caridroit, M Chen, X (陈旭) Paris, F Tortello, MF 2005 http://ir.nigpas.ac.cn/handle/332004/716 英语 eng SOC GEOL FRANCE BULLETIN DE LA SOCIETE GEOLOGIQUE DE FRANCE http://ir.nigpas.ac.cn/handle/332004/716 Acritarchs Chitinozoans Graptolites Trilobites Radiolarians Vertebrates Ordovician Palaeobiogeography North-atlantic Region Middle Ordovician Paleozoic Paleogeography Acritarch Distribution Iapetus Ocean Paleobiogeography Evolution Geography Geology Geosciences Multidisciplinary 期刊论文 2005 ftchinacscnigpas 2019-10-04T00:03:16Z Trilobites and brachiopods are the two main fossil groups that allowed construction of the first palaeogeographical maps for the early Palaeozoic. Together with the bivalves and ostracodes, the benthic elements of these fossil groups have proved to be of great palaeobiogeographical importance. For this reason, these groups are usually considered to be 'better' fossils for inferring Ordovician palaeogeography. The present study indicates that planktic and nektic fossil groups should not be neglected in such palaeobiogeographical studies. The plotting on a palaeogeographical reconstruction for the Arenig (Lower Ordovician, -480 Ma) of some planktic (acritarchs, chitinozoans) and nektic (vertebrates, pelagic trilobites) fossil groups indicates that their distribution appears in part surprisingly similar to that of the benthic trilobite faunas that are considered to display the greatest provincialism. For example, the distribution of the 'peri-Gondwanan' acritarch province including Arbusculidium. filamentosum, Coryphidium and Striatotheca, and the distribution of the Ereniochitina brevis chitinozoan assemblage are almost identical to the palaeogeographical distribution of the Calymenacean-Dalmanitacean trilobite fauna. A review of the different planktic and nektic fossil groups also indicates that it is very important to carefully select 'good' palaeogeographical indicators, in most cases from a large number of taxa. It appears that almost all fossil groups include some 'good' palaeobiogeographical 'markers'. Therefore it is important to search for 'better' taxa within each fossil group, instead of looking only for the 'better' fossil groups as a whole. Report North Atlantic Nanjing Institute of Geology and Palaeontology: NIGPAS OpenIR (Chinese Academy of Sciences) |
institution |
Open Polar |
collection |
Nanjing Institute of Geology and Palaeontology: NIGPAS OpenIR (Chinese Academy of Sciences) |
op_collection_id |
ftchinacscnigpas |
language |
English |
topic |
Acritarchs Chitinozoans Graptolites Trilobites Radiolarians Vertebrates Ordovician Palaeobiogeography North-atlantic Region Middle Ordovician Paleozoic Paleogeography Acritarch Distribution Iapetus Ocean Paleobiogeography Evolution Geography Geology Geosciences Multidisciplinary |
spellingShingle |
Acritarchs Chitinozoans Graptolites Trilobites Radiolarians Vertebrates Ordovician Palaeobiogeography North-atlantic Region Middle Ordovician Paleozoic Paleogeography Acritarch Distribution Iapetus Ocean Paleobiogeography Evolution Geography Geology Geosciences Multidisciplinary Servais, T Blieck, A Caridroit, M Chen, X (陈旭) Paris, F Tortello, MF The importance of plankton and nekton distributions in Ordovician palaeogeographical reconstructions |
topic_facet |
Acritarchs Chitinozoans Graptolites Trilobites Radiolarians Vertebrates Ordovician Palaeobiogeography North-atlantic Region Middle Ordovician Paleozoic Paleogeography Acritarch Distribution Iapetus Ocean Paleobiogeography Evolution Geography Geology Geosciences Multidisciplinary |
description |
Trilobites and brachiopods are the two main fossil groups that allowed construction of the first palaeogeographical maps for the early Palaeozoic. Together with the bivalves and ostracodes, the benthic elements of these fossil groups have proved to be of great palaeobiogeographical importance. For this reason, these groups are usually considered to be 'better' fossils for inferring Ordovician palaeogeography. The present study indicates that planktic and nektic fossil groups should not be neglected in such palaeobiogeographical studies. The plotting on a palaeogeographical reconstruction for the Arenig (Lower Ordovician, -480 Ma) of some planktic (acritarchs, chitinozoans) and nektic (vertebrates, pelagic trilobites) fossil groups indicates that their distribution appears in part surprisingly similar to that of the benthic trilobite faunas that are considered to display the greatest provincialism. For example, the distribution of the 'peri-Gondwanan' acritarch province including Arbusculidium. filamentosum, Coryphidium and Striatotheca, and the distribution of the Ereniochitina brevis chitinozoan assemblage are almost identical to the palaeogeographical distribution of the Calymenacean-Dalmanitacean trilobite fauna. A review of the different planktic and nektic fossil groups also indicates that it is very important to carefully select 'good' palaeogeographical indicators, in most cases from a large number of taxa. It appears that almost all fossil groups include some 'good' palaeobiogeographical 'markers'. Therefore it is important to search for 'better' taxa within each fossil group, instead of looking only for the 'better' fossil groups as a whole. |
format |
Report |
author |
Servais, T Blieck, A Caridroit, M Chen, X (陈旭) Paris, F Tortello, MF |
author_facet |
Servais, T Blieck, A Caridroit, M Chen, X (陈旭) Paris, F Tortello, MF |
author_sort |
Servais, T |
title |
The importance of plankton and nekton distributions in Ordovician palaeogeographical reconstructions |
title_short |
The importance of plankton and nekton distributions in Ordovician palaeogeographical reconstructions |
title_full |
The importance of plankton and nekton distributions in Ordovician palaeogeographical reconstructions |
title_fullStr |
The importance of plankton and nekton distributions in Ordovician palaeogeographical reconstructions |
title_full_unstemmed |
The importance of plankton and nekton distributions in Ordovician palaeogeographical reconstructions |
title_sort |
importance of plankton and nekton distributions in ordovician palaeogeographical reconstructions |
publisher |
SOC GEOL FRANCE |
publishDate |
2005 |
url |
http://ir.nigpas.ac.cn/handle/332004/716 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
BULLETIN DE LA SOCIETE GEOLOGIQUE DE FRANCE http://ir.nigpas.ac.cn/handle/332004/716 |
_version_ |
1766133834100768768 |