The Planktonic foraminifera Globigerinoides eoconglobatus n. sp. in a glacial–interglacial context: IODP359 Sites U1467 and U1468
Here we define a new morphospecies of planktonic foraminifera Globigerinoides eoconglobatus n. sp., identified from International Ocean Discovery Program (IODP) expedition 359 samples from drift deposits of the Maldives, Inner Sea. Through biostratigraphic analysis, we infer it may be the direct anc...
Main Authors: | , , , , |
---|---|
Language: | English |
Published: |
2018
|
Subjects: | |
Online Access: | http://doc.rero.ch/record/323387/files/spe_pfg.pdf http://doc.rero.ch/record/323387/files/spe_pfg_sm.pdf |
id |
ftreroch:oai:doc.rero.ch:20181121093320-MI |
---|---|
record_format |
openpolar |
spelling |
ftreroch:oai:doc.rero.ch:20181121093320-MI 2023-05-15T18:00:30+02:00 The Planktonic foraminifera Globigerinoides eoconglobatus n. sp. in a glacial–interglacial context: IODP359 Sites U1467 and U1468 Stainbank, Stephanie Spezzaferri, Silvia Kroon, Dick Leau, Erica S. de Rüggeberg, Andres 2018-11-21T08:34:38Z http://doc.rero.ch/record/323387/files/spe_pfg.pdf http://doc.rero.ch/record/323387/files/spe_pfg_sm.pdf eng eng http://doc.rero.ch/record/323387/files/spe_pfg.pdf http://doc.rero.ch/record/323387/files/spe_pfg_sm.pdf 2018 ftreroch 2023-02-16T17:32:54Z Here we define a new morphospecies of planktonic foraminifera Globigerinoides eoconglobatus n. sp., identified from International Ocean Discovery Program (IODP) expedition 359 samples from drift deposits of the Maldives, Inner Sea. Through biostratigraphic analysis, we infer it may be the direct ancestor of Globigerinoides conglobatus evolving from Globigerinoides obliquus in the Late Miocene (Subzone M13a). Globigerinoides eoconglobatus n. sp. can be distinguished from G. conglobatus through both its morphological traits and stable isotopic signature (δ18O and δ13C) in pre-adult and adult specimens. The most defining characteristic being its aperture height (AH). A variance in adult stable isotopic signals shows a possible difference in life strategies, possibly related to symbionts (presence/absence or concentration) and/or depth habitat. This work also tentatively shows G. eoconglobatus n. sp. and G. conglobatus abundances are linked to glacial–interglacial stages. Its low abundances and similarities to its descendent Globigerinoides conglobatus has likely accounted for it being unreported, until present, in both modern and fossil studies. Other/Unknown Material Planktonic foraminifera RERO DOC Digital Library |
institution |
Open Polar |
collection |
RERO DOC Digital Library |
op_collection_id |
ftreroch |
language |
English |
description |
Here we define a new morphospecies of planktonic foraminifera Globigerinoides eoconglobatus n. sp., identified from International Ocean Discovery Program (IODP) expedition 359 samples from drift deposits of the Maldives, Inner Sea. Through biostratigraphic analysis, we infer it may be the direct ancestor of Globigerinoides conglobatus evolving from Globigerinoides obliquus in the Late Miocene (Subzone M13a). Globigerinoides eoconglobatus n. sp. can be distinguished from G. conglobatus through both its morphological traits and stable isotopic signature (δ18O and δ13C) in pre-adult and adult specimens. The most defining characteristic being its aperture height (AH). A variance in adult stable isotopic signals shows a possible difference in life strategies, possibly related to symbionts (presence/absence or concentration) and/or depth habitat. This work also tentatively shows G. eoconglobatus n. sp. and G. conglobatus abundances are linked to glacial–interglacial stages. Its low abundances and similarities to its descendent Globigerinoides conglobatus has likely accounted for it being unreported, until present, in both modern and fossil studies. |
author |
Stainbank, Stephanie Spezzaferri, Silvia Kroon, Dick Leau, Erica S. de Rüggeberg, Andres |
spellingShingle |
Stainbank, Stephanie Spezzaferri, Silvia Kroon, Dick Leau, Erica S. de Rüggeberg, Andres The Planktonic foraminifera Globigerinoides eoconglobatus n. sp. in a glacial–interglacial context: IODP359 Sites U1467 and U1468 |
author_facet |
Stainbank, Stephanie Spezzaferri, Silvia Kroon, Dick Leau, Erica S. de Rüggeberg, Andres |
author_sort |
Stainbank, Stephanie |
title |
The Planktonic foraminifera Globigerinoides eoconglobatus n. sp. in a glacial–interglacial context: IODP359 Sites U1467 and U1468 |
title_short |
The Planktonic foraminifera Globigerinoides eoconglobatus n. sp. in a glacial–interglacial context: IODP359 Sites U1467 and U1468 |
title_full |
The Planktonic foraminifera Globigerinoides eoconglobatus n. sp. in a glacial–interglacial context: IODP359 Sites U1467 and U1468 |
title_fullStr |
The Planktonic foraminifera Globigerinoides eoconglobatus n. sp. in a glacial–interglacial context: IODP359 Sites U1467 and U1468 |
title_full_unstemmed |
The Planktonic foraminifera Globigerinoides eoconglobatus n. sp. in a glacial–interglacial context: IODP359 Sites U1467 and U1468 |
title_sort |
planktonic foraminifera globigerinoides eoconglobatus n. sp. in a glacial–interglacial context: iodp359 sites u1467 and u1468 |
publishDate |
2018 |
url |
http://doc.rero.ch/record/323387/files/spe_pfg.pdf http://doc.rero.ch/record/323387/files/spe_pfg_sm.pdf |
genre |
Planktonic foraminifera |
genre_facet |
Planktonic foraminifera |
op_relation |
http://doc.rero.ch/record/323387/files/spe_pfg.pdf http://doc.rero.ch/record/323387/files/spe_pfg_sm.pdf |
_version_ |
1766169617494966272 |