Late Miocene Asterozoans (Echinodermata) in the James Ross Island Volcanic Group
Asterozoans (Echinodermata) of Late Miocene age (6.02 ± 0.12 Ma) are preserved as external moulds in water-lain tuffs of the James Ross Island Volcanic Group (JRIVG), James Ross Island, Antarctic Peninsula. The asterozoans are complete, and appear to represent specimens suffocated after having been...
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Language: | English |
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Cambridge University Press (CUP)
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Online Access: | http://dx.doi.org/10.1017/s0954102006000113 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102006000113 |
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crcambridgeupr:10.1017/s0954102006000113 2024-06-23T07:45:41+00:00 Late Miocene Asterozoans (Echinodermata) in the James Ross Island Volcanic Group Williams, Mark Smellie, John L. Johnson, Joanne S. Blake, Daniel B. 2006 http://dx.doi.org/10.1017/s0954102006000113 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102006000113 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Antarctic Science volume 18, issue 1, page 117-122 ISSN 0954-1020 1365-2079 journal-article 2006 crcambridgeupr https://doi.org/10.1017/s0954102006000113 2024-06-05T04:03:45Z Asterozoans (Echinodermata) of Late Miocene age (6.02 ± 0.12 Ma) are preserved as external moulds in water-lain tuffs of the James Ross Island Volcanic Group (JRIVG), James Ross Island, Antarctic Peninsula. The asterozoans are complete, and appear to represent specimens suffocated after having been pinioned by rapid sedimentation on the distal fringe of an erupting sub-aqueous tuff cone. Although the coarse nature of the host sediments has obliterated the fine morphological detail of the specimens, at least one suggests evidence of entrainment by a turbidity current. A second shows evidence of detachment of the distal tip of one of its arms. In addition to fossil discoveries from glaciomarine sediments, the volcanic tuffs of the JRIVG represent a new source of fossil data that can be used to interpret the ecology and environment of the Antarctic marine shelf biota during the Neogene. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Antarctic Science James Ross Island Ross Island Cambridge University Press Antarctic Antarctic Peninsula Ross Island The Antarctic Antarctic Science 18 1 117 122 |
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Open Polar |
collection |
Cambridge University Press |
op_collection_id |
crcambridgeupr |
language |
English |
description |
Asterozoans (Echinodermata) of Late Miocene age (6.02 ± 0.12 Ma) are preserved as external moulds in water-lain tuffs of the James Ross Island Volcanic Group (JRIVG), James Ross Island, Antarctic Peninsula. The asterozoans are complete, and appear to represent specimens suffocated after having been pinioned by rapid sedimentation on the distal fringe of an erupting sub-aqueous tuff cone. Although the coarse nature of the host sediments has obliterated the fine morphological detail of the specimens, at least one suggests evidence of entrainment by a turbidity current. A second shows evidence of detachment of the distal tip of one of its arms. In addition to fossil discoveries from glaciomarine sediments, the volcanic tuffs of the JRIVG represent a new source of fossil data that can be used to interpret the ecology and environment of the Antarctic marine shelf biota during the Neogene. |
format |
Article in Journal/Newspaper |
author |
Williams, Mark Smellie, John L. Johnson, Joanne S. Blake, Daniel B. |
spellingShingle |
Williams, Mark Smellie, John L. Johnson, Joanne S. Blake, Daniel B. Late Miocene Asterozoans (Echinodermata) in the James Ross Island Volcanic Group |
author_facet |
Williams, Mark Smellie, John L. Johnson, Joanne S. Blake, Daniel B. |
author_sort |
Williams, Mark |
title |
Late Miocene Asterozoans (Echinodermata) in the James Ross Island Volcanic Group |
title_short |
Late Miocene Asterozoans (Echinodermata) in the James Ross Island Volcanic Group |
title_full |
Late Miocene Asterozoans (Echinodermata) in the James Ross Island Volcanic Group |
title_fullStr |
Late Miocene Asterozoans (Echinodermata) in the James Ross Island Volcanic Group |
title_full_unstemmed |
Late Miocene Asterozoans (Echinodermata) in the James Ross Island Volcanic Group |
title_sort |
late miocene asterozoans (echinodermata) in the james ross island volcanic group |
publisher |
Cambridge University Press (CUP) |
publishDate |
2006 |
url |
http://dx.doi.org/10.1017/s0954102006000113 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102006000113 |
geographic |
Antarctic Antarctic Peninsula Ross Island The Antarctic |
geographic_facet |
Antarctic Antarctic Peninsula Ross Island The Antarctic |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctic Science James Ross Island Ross Island |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctic Science James Ross Island Ross Island |
op_source |
Antarctic Science volume 18, issue 1, page 117-122 ISSN 0954-1020 1365-2079 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1017/s0954102006000113 |
container_title |
Antarctic Science |
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18 |
container_issue |
1 |
container_start_page |
117 |
op_container_end_page |
122 |
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1802641921416364032 |