A new sediment-dwelling pholadid bivalve from Oligocene glaciomarine sediments of King George Island, West Antarctica
We present a re-description of the pholadid bivalve from the Oligocene Polonez Cove Formation, King George Island, West Antarctica, previously identified as Penitella sp. The study is based on a collection of 210 specimens, preserved exclusively in life position in flask-shaped Gastrochaenolites typ...
Published in: | Acta Palaeontologica Polonica |
---|---|
Main Authors: | , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Institute of Paleobiology PAS
2016
|
Subjects: | |
Online Access: | https://doi.org/10.4202/app.00255.2016 https://doaj.org/article/fa16d29fa42c463ab6a666bded48b6c8 |
id |
ftdoajarticles:oai:doaj.org/article:fa16d29fa42c463ab6a666bded48b6c8 |
---|---|
record_format |
openpolar |
spelling |
ftdoajarticles:oai:doaj.org/article:fa16d29fa42c463ab6a666bded48b6c8 2023-05-15T14:02:02+02:00 A new sediment-dwelling pholadid bivalve from Oligocene glaciomarine sediments of King George Island, West Antarctica Krzysztof Hryniewicz Andrzej Gaździcki 2016-12-01T00:00:00Z https://doi.org/10.4202/app.00255.2016 https://doaj.org/article/fa16d29fa42c463ab6a666bded48b6c8 EN eng Institute of Paleobiology PAS http://www.app.pan.pl/archive/published/app61/app002552016.pdf https://doaj.org/toc/0567-7920 https://doaj.org/toc/1732-2421 doi:10.4202/app.00255.2016 0567-7920 1732-2421 https://doaj.org/article/fa16d29fa42c463ab6a666bded48b6c8 Acta Palaeontologica Polonica, Vol 61, Iss 4, Pp 885-896 (2016) Bivalvia Pholadoidea Pholadidea ecology glaciomarine palaeobiogeography Oligocene Antarctica Fossil man. Human paleontology GN282-286.7 Paleontology QE701-760 article 2016 ftdoajarticles https://doi.org/10.4202/app.00255.2016 2022-12-31T00:12:57Z We present a re-description of the pholadid bivalve from the Oligocene Polonez Cove Formation, King George Island, West Antarctica, previously identified as Penitella sp. The study is based on a collection of 210 specimens, preserved exclusively in life position in flask-shaped Gastrochaenolites type borings which have been subsequently buried by glaciomarine diamictite. The systematic study showed that this pholadid is a new species belonging to the genus Pholadidea rather than to Penitella and we name it Pholadidea gradzinskii sp. nov. The species is one of very few Late Cretaceous–Paleogene pholadids that we could safely identify as Pholadidea. All of them are known exclusively from the southern Pacific and adjacent areas (New Zealand, Antarctica, and Patagonia). We demonstrate that the genus attained its Recent broad distribution before the middle Miocene, when the first species of Pholadidea appeared in the Northern Hemisphere. The mass occurrence of P. gradzinskii in the Oligocene of West Antarctica results from favourable living condition in a shallow marine environment. Low sedimentation rate allowed the settlement of numerous larvae and their subsequent metamorphosis, growth, and maturity terminated by the mass mortality caused by the burial by marine diamictite. The sediment-boring Paleogene species of Pholadidea, among them P. gradzinskii, follow the wood-boring Late Cretaceous species P. (Hatasia) wiffenae, which reflects a general pattern of evolution of substrate selection among pholadoid bivalves. Article in Journal/Newspaper Antarc* Antarctica King George Island West Antarctica Directory of Open Access Journals: DOAJ Articles Patagonia King George Island West Antarctica Pacific New Zealand Polonez Cove ENVELOPE(-58.131,-58.131,-62.153,-62.153) Acta Palaeontologica Polonica 61 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Bivalvia Pholadoidea Pholadidea ecology glaciomarine palaeobiogeography Oligocene Antarctica Fossil man. Human paleontology GN282-286.7 Paleontology QE701-760 |
spellingShingle |
Bivalvia Pholadoidea Pholadidea ecology glaciomarine palaeobiogeography Oligocene Antarctica Fossil man. Human paleontology GN282-286.7 Paleontology QE701-760 Krzysztof Hryniewicz Andrzej Gaździcki A new sediment-dwelling pholadid bivalve from Oligocene glaciomarine sediments of King George Island, West Antarctica |
topic_facet |
Bivalvia Pholadoidea Pholadidea ecology glaciomarine palaeobiogeography Oligocene Antarctica Fossil man. Human paleontology GN282-286.7 Paleontology QE701-760 |
description |
We present a re-description of the pholadid bivalve from the Oligocene Polonez Cove Formation, King George Island, West Antarctica, previously identified as Penitella sp. The study is based on a collection of 210 specimens, preserved exclusively in life position in flask-shaped Gastrochaenolites type borings which have been subsequently buried by glaciomarine diamictite. The systematic study showed that this pholadid is a new species belonging to the genus Pholadidea rather than to Penitella and we name it Pholadidea gradzinskii sp. nov. The species is one of very few Late Cretaceous–Paleogene pholadids that we could safely identify as Pholadidea. All of them are known exclusively from the southern Pacific and adjacent areas (New Zealand, Antarctica, and Patagonia). We demonstrate that the genus attained its Recent broad distribution before the middle Miocene, when the first species of Pholadidea appeared in the Northern Hemisphere. The mass occurrence of P. gradzinskii in the Oligocene of West Antarctica results from favourable living condition in a shallow marine environment. Low sedimentation rate allowed the settlement of numerous larvae and their subsequent metamorphosis, growth, and maturity terminated by the mass mortality caused by the burial by marine diamictite. The sediment-boring Paleogene species of Pholadidea, among them P. gradzinskii, follow the wood-boring Late Cretaceous species P. (Hatasia) wiffenae, which reflects a general pattern of evolution of substrate selection among pholadoid bivalves. |
format |
Article in Journal/Newspaper |
author |
Krzysztof Hryniewicz Andrzej Gaździcki |
author_facet |
Krzysztof Hryniewicz Andrzej Gaździcki |
author_sort |
Krzysztof Hryniewicz |
title |
A new sediment-dwelling pholadid bivalve from Oligocene glaciomarine sediments of King George Island, West Antarctica |
title_short |
A new sediment-dwelling pholadid bivalve from Oligocene glaciomarine sediments of King George Island, West Antarctica |
title_full |
A new sediment-dwelling pholadid bivalve from Oligocene glaciomarine sediments of King George Island, West Antarctica |
title_fullStr |
A new sediment-dwelling pholadid bivalve from Oligocene glaciomarine sediments of King George Island, West Antarctica |
title_full_unstemmed |
A new sediment-dwelling pholadid bivalve from Oligocene glaciomarine sediments of King George Island, West Antarctica |
title_sort |
new sediment-dwelling pholadid bivalve from oligocene glaciomarine sediments of king george island, west antarctica |
publisher |
Institute of Paleobiology PAS |
publishDate |
2016 |
url |
https://doi.org/10.4202/app.00255.2016 https://doaj.org/article/fa16d29fa42c463ab6a666bded48b6c8 |
long_lat |
ENVELOPE(-58.131,-58.131,-62.153,-62.153) |
geographic |
Patagonia King George Island West Antarctica Pacific New Zealand Polonez Cove |
geographic_facet |
Patagonia King George Island West Antarctica Pacific New Zealand Polonez Cove |
genre |
Antarc* Antarctica King George Island West Antarctica |
genre_facet |
Antarc* Antarctica King George Island West Antarctica |
op_source |
Acta Palaeontologica Polonica, Vol 61, Iss 4, Pp 885-896 (2016) |
op_relation |
http://www.app.pan.pl/archive/published/app61/app002552016.pdf https://doaj.org/toc/0567-7920 https://doaj.org/toc/1732-2421 doi:10.4202/app.00255.2016 0567-7920 1732-2421 https://doaj.org/article/fa16d29fa42c463ab6a666bded48b6c8 |
op_doi |
https://doi.org/10.4202/app.00255.2016 |
container_title |
Acta Palaeontologica Polonica |
container_volume |
61 |
_version_ |
1766272095913771008 |