The bivalve Aulacomyella from the Early Tithonian (Late Jurassic) of Antarctica
The bivalve Aulacomyella is described formally from Tithonian deposits of the Antarctic Peninsula region for the first time. Two species are recognized. A. willeyi Kelly sp. nov. was collected in situ from the Nordenskjöld Formation, Longing Gap on the east coast of Graham Land, and in clasts rework...
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Cambridge University Press (CUP)
1991
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Online Access: | http://dx.doi.org/10.1017/s0954102091000135 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102091000135 |
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crcambridgeupr:10.1017/s0954102091000135 2024-04-28T07:53:58+00:00 The bivalve Aulacomyella from the Early Tithonian (Late Jurassic) of Antarctica Kelly, Simon R.A. Doyle, Peter 1991 http://dx.doi.org/10.1017/s0954102091000135 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102091000135 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Antarctic Science volume 3, issue 1, page 97-107 ISSN 0954-1020 1365-2079 Geology Ecology, Evolution, Behavior and Systematics Oceanography journal-article 1991 crcambridgeupr https://doi.org/10.1017/s0954102091000135 2024-04-09T06:55:05Z The bivalve Aulacomyella is described formally from Tithonian deposits of the Antarctic Peninsula region for the first time. Two species are recognized. A. willeyi Kelly sp. nov. was collected in situ from the Nordenskjöld Formation, Longing Gap on the east coast of Graham Land, and in clasts reworked into Cretaceous glide block deposits on James Ross Island. A. cf. problematica Furlani is recorded from the Himalia Ridge Formation, Fossil Bluff Group, Alexander Island. These Antarctic records are the first published systematic descriptions of the genus from the Southern Hemisphere. Together with Mexican and Turkish records, they represent the last known occurrences of this genus. Globally the genus is particularly abundant during the Kimmeridgian and Early Tithonian stages and is therefore of value as a biostratigraphic indicator. It was almost certainly an epibyssate suspension feeder, although the precise palaeoecological setting for Aulacomyella is uncertain. It normally occurs in black shales or mudstones. The most likely life habits were either living epifaunally on the sea floor, where it bloomed under episodic dysaerobic conditions in an otherwise anaerobic environment, or pseudoplanktonically infesting floating sea weeds etc. Of these hypotheses the former is preferred here. Article in Journal/Newspaper Alexander Island Antarc* Antarctic Antarctic Peninsula Antarctic Science Antarctica Graham Land James Ross Island Ross Island Cambridge University Press Antarctic Science 3 1 97 107 |
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Open Polar |
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Cambridge University Press |
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crcambridgeupr |
language |
English |
topic |
Geology Ecology, Evolution, Behavior and Systematics Oceanography |
spellingShingle |
Geology Ecology, Evolution, Behavior and Systematics Oceanography Kelly, Simon R.A. Doyle, Peter The bivalve Aulacomyella from the Early Tithonian (Late Jurassic) of Antarctica |
topic_facet |
Geology Ecology, Evolution, Behavior and Systematics Oceanography |
description |
The bivalve Aulacomyella is described formally from Tithonian deposits of the Antarctic Peninsula region for the first time. Two species are recognized. A. willeyi Kelly sp. nov. was collected in situ from the Nordenskjöld Formation, Longing Gap on the east coast of Graham Land, and in clasts reworked into Cretaceous glide block deposits on James Ross Island. A. cf. problematica Furlani is recorded from the Himalia Ridge Formation, Fossil Bluff Group, Alexander Island. These Antarctic records are the first published systematic descriptions of the genus from the Southern Hemisphere. Together with Mexican and Turkish records, they represent the last known occurrences of this genus. Globally the genus is particularly abundant during the Kimmeridgian and Early Tithonian stages and is therefore of value as a biostratigraphic indicator. It was almost certainly an epibyssate suspension feeder, although the precise palaeoecological setting for Aulacomyella is uncertain. It normally occurs in black shales or mudstones. The most likely life habits were either living epifaunally on the sea floor, where it bloomed under episodic dysaerobic conditions in an otherwise anaerobic environment, or pseudoplanktonically infesting floating sea weeds etc. Of these hypotheses the former is preferred here. |
format |
Article in Journal/Newspaper |
author |
Kelly, Simon R.A. Doyle, Peter |
author_facet |
Kelly, Simon R.A. Doyle, Peter |
author_sort |
Kelly, Simon R.A. |
title |
The bivalve Aulacomyella from the Early Tithonian (Late Jurassic) of Antarctica |
title_short |
The bivalve Aulacomyella from the Early Tithonian (Late Jurassic) of Antarctica |
title_full |
The bivalve Aulacomyella from the Early Tithonian (Late Jurassic) of Antarctica |
title_fullStr |
The bivalve Aulacomyella from the Early Tithonian (Late Jurassic) of Antarctica |
title_full_unstemmed |
The bivalve Aulacomyella from the Early Tithonian (Late Jurassic) of Antarctica |
title_sort |
bivalve aulacomyella from the early tithonian (late jurassic) of antarctica |
publisher |
Cambridge University Press (CUP) |
publishDate |
1991 |
url |
http://dx.doi.org/10.1017/s0954102091000135 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102091000135 |
genre |
Alexander Island Antarc* Antarctic Antarctic Peninsula Antarctic Science Antarctica Graham Land James Ross Island Ross Island |
genre_facet |
Alexander Island Antarc* Antarctic Antarctic Peninsula Antarctic Science Antarctica Graham Land James Ross Island Ross Island |
op_source |
Antarctic Science volume 3, issue 1, page 97-107 ISSN 0954-1020 1365-2079 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1017/s0954102091000135 |
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Antarctic Science |
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3 |
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1 |
container_start_page |
97 |
op_container_end_page |
107 |
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1797574209394704384 |