Discovery of Pterobranchia (Graptolithoidea) in the Permian
The fossil remains of a hemichordate exoskeleton, recognized as fragments of the stolons and their cyst−like swellings connected with the fusellar zooidal tubes, were derived by chemical isolations from Late Permian (Kazanian) mudstones of the Svalis Dome (central Barents Sea, Norway). These fossils...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.543.1174 2023-05-15T15:38:53+02:00 Discovery of Pterobranchia (Graptolithoidea) in the Permian Piotr Mierzejewski Cyprian Kulicki The Pennsylvania State University CiteSeerX Archives application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.543.1174 http://app.pan.pl/archive/published/app47/app47-169.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.543.1174 http://app.pan.pl/archive/published/app47/app47-169.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://app.pan.pl/archive/published/app47/app47-169.pdf text ftciteseerx 2016-01-08T11:09:35Z The fossil remains of a hemichordate exoskeleton, recognized as fragments of the stolons and their cyst−like swellings connected with the fusellar zooidal tubes, were derived by chemical isolations from Late Permian (Kazanian) mudstones of the Svalis Dome (central Barents Sea, Norway). These fossils, referred to as Diplohydra szaniawskii sp. nov., are the first undoubted representatives of the class Graptolithoidea found in Permian deposits. The genus Diplohydra Kozłow− ski, 1959, known previously only from the Ordovician and originally established as a thecate hydroid taxon, is reinter− preted as an aberrant member of the order Rhabdopleuroidea. This strange hemichordate, characterized by fusellar tubes distinctly narrower than stolon−like tubes and their swellings, reveals a certain degree of dimorphism in the stolon system. D. szaniawskii sp. nov. also displays some peculiar morphological features common to the Ordovician rhabdopleuroid genus Rhabdopleurites Kozłowski and the stolonoid genus Stolonodendrum Kozłowski. Text Barents Sea Unknown Barents Sea Norway |
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Open Polar |
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Unknown |
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ftciteseerx |
language |
English |
description |
The fossil remains of a hemichordate exoskeleton, recognized as fragments of the stolons and their cyst−like swellings connected with the fusellar zooidal tubes, were derived by chemical isolations from Late Permian (Kazanian) mudstones of the Svalis Dome (central Barents Sea, Norway). These fossils, referred to as Diplohydra szaniawskii sp. nov., are the first undoubted representatives of the class Graptolithoidea found in Permian deposits. The genus Diplohydra Kozłow− ski, 1959, known previously only from the Ordovician and originally established as a thecate hydroid taxon, is reinter− preted as an aberrant member of the order Rhabdopleuroidea. This strange hemichordate, characterized by fusellar tubes distinctly narrower than stolon−like tubes and their swellings, reveals a certain degree of dimorphism in the stolon system. D. szaniawskii sp. nov. also displays some peculiar morphological features common to the Ordovician rhabdopleuroid genus Rhabdopleurites Kozłowski and the stolonoid genus Stolonodendrum Kozłowski. |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Piotr Mierzejewski Cyprian Kulicki |
spellingShingle |
Piotr Mierzejewski Cyprian Kulicki Discovery of Pterobranchia (Graptolithoidea) in the Permian |
author_facet |
Piotr Mierzejewski Cyprian Kulicki |
author_sort |
Piotr Mierzejewski |
title |
Discovery of Pterobranchia (Graptolithoidea) in the Permian |
title_short |
Discovery of Pterobranchia (Graptolithoidea) in the Permian |
title_full |
Discovery of Pterobranchia (Graptolithoidea) in the Permian |
title_fullStr |
Discovery of Pterobranchia (Graptolithoidea) in the Permian |
title_full_unstemmed |
Discovery of Pterobranchia (Graptolithoidea) in the Permian |
title_sort |
discovery of pterobranchia (graptolithoidea) in the permian |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.543.1174 http://app.pan.pl/archive/published/app47/app47-169.pdf |
geographic |
Barents Sea Norway |
geographic_facet |
Barents Sea Norway |
genre |
Barents Sea |
genre_facet |
Barents Sea |
op_source |
http://app.pan.pl/archive/published/app47/app47-169.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.543.1174 http://app.pan.pl/archive/published/app47/app47-169.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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1766370279559266304 |