New trigonioid bivalves from the Albian (Early Cretaceous) of Alexander Island, Antarctic Peninsula: systematics, paleoecology, and austral Cretaceous Paleobiogeography
Newly discovered trigonioid bivalves are systematically described from the Late Albian of the Fossil Bluff Group of Alexander Island, Antarctic Peninsula. The fauna includes Nototrigonia ( Nototrigonia ) ponticula Skwarko, N. ( Callitrigonia ) offsetensis n. sp., Eselaevitrigonia macdonaldi n. sp.,...
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crcambridgeupr:10.1017/s0022336000034600 2024-05-12T07:52:31+00:00 New trigonioid bivalves from the Albian (Early Cretaceous) of Alexander Island, Antarctic Peninsula: systematics, paleoecology, and austral Cretaceous Paleobiogeography Kelly, Simon R. A. 1995 http://dx.doi.org/10.1017/s0022336000034600 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022336000034600 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Journal of Paleontology volume 69, issue 2, page 264-279 ISSN 0022-3360 1937-2337 Paleontology journal-article 1995 crcambridgeupr https://doi.org/10.1017/s0022336000034600 2024-04-18T06:53:50Z Newly discovered trigonioid bivalves are systematically described from the Late Albian of the Fossil Bluff Group of Alexander Island, Antarctic Peninsula. The fauna includes Nototrigonia ( Nototrigonia ) ponticula Skwarko, N. ( Callitrigonia ) offsetensis n. sp., Eselaevitrigonia macdonaldi n. sp., Pterotrigonia ( Pisotrigonia ) capricornia (Skwarko), and Pacitrigonia praenuntians n. sp. It represents the first Albian trigonioid fauna described from the Antarctic. It is also the first published record of the Nototrigoniinae (excluding Pacitrigonia ) outside Australasia. Paleoecologically, this fauna represents the shallowest and highest energy molluscan assemblage from the Fossil Bluff Group and occurs near the base of a significant transgressive unit, the Mars Glacier Member of the Neptune Glacier Formation. The paleogeography of Austral Cretaceous trigonioids is reviewed. Endemic centers are identified in India–east Africa, southern South America, and Australasia. Only one trigonioid genus, Pacitrigonia , had its origin in the Antarctic. During the earliest Cretaceous, cosmopolitan trigonioid genera occurred in Antarctica. In the mid-Cretaceous faunal similarity of Antarctica with Australasia was strong, and in the latest Cretaceous affinity with southern South America increased. Article in Journal/Newspaper Alexander Island Antarc* Antarctic Antarctic Peninsula Antarctica Mars Glacier Neptune Glacier Cambridge University Press Antarctic The Antarctic Antarctic Peninsula Austral Alexander Island ENVELOPE(-69.895,-69.895,-71.287,-71.287) Fossil Bluff ENVELOPE(-68.274,-68.274,-71.332,-71.332) Mars Glacier ENVELOPE(-68.433,-68.433,-71.833,-71.833) Neptune Glacier ENVELOPE(-68.473,-68.473,-71.713,-71.713) Journal of Paleontology 69 2 264 279 |
institution |
Open Polar |
collection |
Cambridge University Press |
op_collection_id |
crcambridgeupr |
language |
English |
topic |
Paleontology |
spellingShingle |
Paleontology Kelly, Simon R. A. New trigonioid bivalves from the Albian (Early Cretaceous) of Alexander Island, Antarctic Peninsula: systematics, paleoecology, and austral Cretaceous Paleobiogeography |
topic_facet |
Paleontology |
description |
Newly discovered trigonioid bivalves are systematically described from the Late Albian of the Fossil Bluff Group of Alexander Island, Antarctic Peninsula. The fauna includes Nototrigonia ( Nototrigonia ) ponticula Skwarko, N. ( Callitrigonia ) offsetensis n. sp., Eselaevitrigonia macdonaldi n. sp., Pterotrigonia ( Pisotrigonia ) capricornia (Skwarko), and Pacitrigonia praenuntians n. sp. It represents the first Albian trigonioid fauna described from the Antarctic. It is also the first published record of the Nototrigoniinae (excluding Pacitrigonia ) outside Australasia. Paleoecologically, this fauna represents the shallowest and highest energy molluscan assemblage from the Fossil Bluff Group and occurs near the base of a significant transgressive unit, the Mars Glacier Member of the Neptune Glacier Formation. The paleogeography of Austral Cretaceous trigonioids is reviewed. Endemic centers are identified in India–east Africa, southern South America, and Australasia. Only one trigonioid genus, Pacitrigonia , had its origin in the Antarctic. During the earliest Cretaceous, cosmopolitan trigonioid genera occurred in Antarctica. In the mid-Cretaceous faunal similarity of Antarctica with Australasia was strong, and in the latest Cretaceous affinity with southern South America increased. |
format |
Article in Journal/Newspaper |
author |
Kelly, Simon R. A. |
author_facet |
Kelly, Simon R. A. |
author_sort |
Kelly, Simon R. A. |
title |
New trigonioid bivalves from the Albian (Early Cretaceous) of Alexander Island, Antarctic Peninsula: systematics, paleoecology, and austral Cretaceous Paleobiogeography |
title_short |
New trigonioid bivalves from the Albian (Early Cretaceous) of Alexander Island, Antarctic Peninsula: systematics, paleoecology, and austral Cretaceous Paleobiogeography |
title_full |
New trigonioid bivalves from the Albian (Early Cretaceous) of Alexander Island, Antarctic Peninsula: systematics, paleoecology, and austral Cretaceous Paleobiogeography |
title_fullStr |
New trigonioid bivalves from the Albian (Early Cretaceous) of Alexander Island, Antarctic Peninsula: systematics, paleoecology, and austral Cretaceous Paleobiogeography |
title_full_unstemmed |
New trigonioid bivalves from the Albian (Early Cretaceous) of Alexander Island, Antarctic Peninsula: systematics, paleoecology, and austral Cretaceous Paleobiogeography |
title_sort |
new trigonioid bivalves from the albian (early cretaceous) of alexander island, antarctic peninsula: systematics, paleoecology, and austral cretaceous paleobiogeography |
publisher |
Cambridge University Press (CUP) |
publishDate |
1995 |
url |
http://dx.doi.org/10.1017/s0022336000034600 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022336000034600 |
long_lat |
ENVELOPE(-69.895,-69.895,-71.287,-71.287) ENVELOPE(-68.274,-68.274,-71.332,-71.332) ENVELOPE(-68.433,-68.433,-71.833,-71.833) ENVELOPE(-68.473,-68.473,-71.713,-71.713) |
geographic |
Antarctic The Antarctic Antarctic Peninsula Austral Alexander Island Fossil Bluff Mars Glacier Neptune Glacier |
geographic_facet |
Antarctic The Antarctic Antarctic Peninsula Austral Alexander Island Fossil Bluff Mars Glacier Neptune Glacier |
genre |
Alexander Island Antarc* Antarctic Antarctic Peninsula Antarctica Mars Glacier Neptune Glacier |
genre_facet |
Alexander Island Antarc* Antarctic Antarctic Peninsula Antarctica Mars Glacier Neptune Glacier |
op_source |
Journal of Paleontology volume 69, issue 2, page 264-279 ISSN 0022-3360 1937-2337 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1017/s0022336000034600 |
container_title |
Journal of Paleontology |
container_volume |
69 |
container_issue |
2 |
container_start_page |
264 |
op_container_end_page |
279 |
_version_ |
1798835929622773760 |