A new genus and two new species of saccamminid foraminiferans (Protista, Rhizaria) from the deep Southern Ocean
We describe two new species of spherical single-chambered ('saccamminid') foraminifera from the bathyal and abyssal Weddell Sea (Southern Ocean), collected in epibenthic sledge and Agassiz trawl samples obtained during the 2005 ANDEEP III campaign. Both are assigned to Leptammina gen. nov....
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ftmagnoliapress:oai:ojs.mapress.com:article/6359 2023-05-15T13:47:47+02:00 A new genus and two new species of saccamminid foraminiferans (Protista, Rhizaria) from the deep Southern Ocean CEDHAGEN, TOMAS GOODAY, ANDREW J. PAWLOWSKI, JAN 2009-05-11 application/pdf https://www.mapress.com/j/zt/article/view/zootaxa.2096.1.3 https://doi.org/10.11646/zootaxa.2096.1.3 eng eng Mangolia Press https://www.mapress.com/j/zt/article/view/zootaxa.2096.1.3/28451 Copyright (c) 2015 Zootaxa Zootaxa; Vol 2096, No 1: 11 May. 2009; 9–22 1175-5334 1175-5326 10.11646/zootaxa.2096.1 Mollusca Foraminifera Weddell Sea Antarctica Leptammina Taxonomy Deep Sea ANDEEP info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2009 ftmagnoliapress https://doi.org/10.11646/zootaxa.2096.1.3 2019-09-10T15:05:50Z We describe two new species of spherical single-chambered ('saccamminid') foraminifera from the bathyal and abyssal Weddell Sea (Southern Ocean), collected in epibenthic sledge and Agassiz trawl samples obtained during the 2005 ANDEEP III campaign. Both are assigned to Leptammina gen. nov. The new genus is similar in overall test morphology to Saccammina Carpenter, 1869; it is distinguished mainly by its test wall, which is delicate, flexible and composed of fine mineral grains, rather than being rigid and coarsely agglutinated. In Leptammina grisea gen. et sp. nov., the test wall is relatively thick, grayish with a violet tinge and a dull surface; the cytoplasm is dark greenish. In Leptammina flavofusca gen. et sp. nov., the test is yellowish brown, with a very finely, almost transluscent agglutinated wall; the cytoplasm is pale yellowish. Both species have prominent circular apertures. Maximum likelihood phylogenetic analysis of SSU rRNA gene data showed that both species group together with an undescribed shallow-water Antarctic species (“silver saccamminid”) in a very strongly supported clade (100 %). Leptammina grisea gen. et sp. nov. is a relatively uncommon species (29 specimens from 3 stations), found at 1580–4822 m depth in the central and north–western Weddell Sea; Leptammina flavofusca gen. et sp. nov. is common (398 specimens from 4 stations) at depths of 3138–4795 m in the central Weddell Sea and off Kapp Norvegia. Both species are presently known only from ANDEEP III samples. Article in Journal/Newspaper Antarc* Antarctic Antarctica Southern Ocean Weddell Sea Magnolia press Antarctic Southern Ocean Weddell Sea Weddell Zootaxa 2096 1 9 22 |
institution |
Open Polar |
collection |
Magnolia press |
op_collection_id |
ftmagnoliapress |
language |
English |
topic |
Mollusca Foraminifera Weddell Sea Antarctica Leptammina Taxonomy Deep Sea ANDEEP |
spellingShingle |
Mollusca Foraminifera Weddell Sea Antarctica Leptammina Taxonomy Deep Sea ANDEEP CEDHAGEN, TOMAS GOODAY, ANDREW J. PAWLOWSKI, JAN A new genus and two new species of saccamminid foraminiferans (Protista, Rhizaria) from the deep Southern Ocean |
topic_facet |
Mollusca Foraminifera Weddell Sea Antarctica Leptammina Taxonomy Deep Sea ANDEEP |
description |
We describe two new species of spherical single-chambered ('saccamminid') foraminifera from the bathyal and abyssal Weddell Sea (Southern Ocean), collected in epibenthic sledge and Agassiz trawl samples obtained during the 2005 ANDEEP III campaign. Both are assigned to Leptammina gen. nov. The new genus is similar in overall test morphology to Saccammina Carpenter, 1869; it is distinguished mainly by its test wall, which is delicate, flexible and composed of fine mineral grains, rather than being rigid and coarsely agglutinated. In Leptammina grisea gen. et sp. nov., the test wall is relatively thick, grayish with a violet tinge and a dull surface; the cytoplasm is dark greenish. In Leptammina flavofusca gen. et sp. nov., the test is yellowish brown, with a very finely, almost transluscent agglutinated wall; the cytoplasm is pale yellowish. Both species have prominent circular apertures. Maximum likelihood phylogenetic analysis of SSU rRNA gene data showed that both species group together with an undescribed shallow-water Antarctic species (“silver saccamminid”) in a very strongly supported clade (100 %). Leptammina grisea gen. et sp. nov. is a relatively uncommon species (29 specimens from 3 stations), found at 1580–4822 m depth in the central and north–western Weddell Sea; Leptammina flavofusca gen. et sp. nov. is common (398 specimens from 4 stations) at depths of 3138–4795 m in the central Weddell Sea and off Kapp Norvegia. Both species are presently known only from ANDEEP III samples. |
format |
Article in Journal/Newspaper |
author |
CEDHAGEN, TOMAS GOODAY, ANDREW J. PAWLOWSKI, JAN |
author_facet |
CEDHAGEN, TOMAS GOODAY, ANDREW J. PAWLOWSKI, JAN |
author_sort |
CEDHAGEN, TOMAS |
title |
A new genus and two new species of saccamminid foraminiferans (Protista, Rhizaria) from the deep Southern Ocean |
title_short |
A new genus and two new species of saccamminid foraminiferans (Protista, Rhizaria) from the deep Southern Ocean |
title_full |
A new genus and two new species of saccamminid foraminiferans (Protista, Rhizaria) from the deep Southern Ocean |
title_fullStr |
A new genus and two new species of saccamminid foraminiferans (Protista, Rhizaria) from the deep Southern Ocean |
title_full_unstemmed |
A new genus and two new species of saccamminid foraminiferans (Protista, Rhizaria) from the deep Southern Ocean |
title_sort |
new genus and two new species of saccamminid foraminiferans (protista, rhizaria) from the deep southern ocean |
publisher |
Mangolia Press |
publishDate |
2009 |
url |
https://www.mapress.com/j/zt/article/view/zootaxa.2096.1.3 https://doi.org/10.11646/zootaxa.2096.1.3 |
geographic |
Antarctic Southern Ocean Weddell Sea Weddell |
geographic_facet |
Antarctic Southern Ocean Weddell Sea Weddell |
genre |
Antarc* Antarctic Antarctica Southern Ocean Weddell Sea |
genre_facet |
Antarc* Antarctic Antarctica Southern Ocean Weddell Sea |
op_source |
Zootaxa; Vol 2096, No 1: 11 May. 2009; 9–22 1175-5334 1175-5326 10.11646/zootaxa.2096.1 |
op_relation |
https://www.mapress.com/j/zt/article/view/zootaxa.2096.1.3/28451 |
op_rights |
Copyright (c) 2015 Zootaxa |
op_doi |
https://doi.org/10.11646/zootaxa.2096.1.3 |
container_title |
Zootaxa |
container_volume |
2096 |
container_issue |
1 |
container_start_page |
9 |
op_container_end_page |
22 |
_version_ |
1766247855829286912 |