Ediacaran metazoan fossils with siliceous skeletons from the Digermulen Peninsula of Arctic Norway
In this study, a new assemblage of Ediacaran metazoan fossils is reported from the basal Stáhpogieddi Formation on the Digermulen Peninsula of Arctic Norway, including Anulitubus n. gen. Moczydłowska in Moczydłowska et al., Anulitubus formosus n. gen. n. sp. Moczydłowska in Moczydłowska et al., Coni...
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ftbioone:10.1017/jpa.2020.105 2024-06-02T08:01:54+00:00 Ediacaran metazoan fossils with siliceous skeletons from the Digermulen Peninsula of Arctic Norway Małgorzata Moczydłowska Benjamin P. Kear Daniel Snitting Lei Liu Peter Lazor Jarosław Majka Małgorzata Moczydłowska Benjamin P. Kear Daniel Snitting Lei Liu Peter Lazor Jarosław Majka world 2021-04-26 text/HTML https://doi.org/10.1017/jpa.2020.105 en eng The Paleontological Society doi:10.1017/jpa.2020.105 All rights reserved. https://doi.org/10.1017/jpa.2020.105 Text 2021 ftbioone https://doi.org/10.1017/jpa.2020.105 2024-05-07T00:47:45Z In this study, a new assemblage of Ediacaran metazoan fossils is reported from the basal Stáhpogieddi Formation on the Digermulen Peninsula of Arctic Norway, including Anulitubus n. gen. Moczydłowska in Moczydłowska et al., Anulitubus formosus n. gen. n. sp. Moczydłowska in Moczydłowska et al., Coniculus n. gen. Moczydłowska in Moczydłowska et al., Coniculus elegantis n. gen. n. sp. Moczydłowska in Moczydłowska et al., Fistula n. gen. Moczydłowska in Moczydłowska et al., and Fistula crenulata n. gen. n. sp. Moczydłowska in Moczydłowska et al. The specimens are three-dimensionally preserved and include tubular and conical skeletons that are morphologically distinguished by their body-wall constructions, radial symmetry, polarity, segmentation, and annulation. The skeletons are interpreted to be biomineralized by primary silica based on computed micro-tomographic, petrographic, geochemical, and spectroscopic evidence of originally rigid body wall with layers of constant thicknesses, composed of opal, microcrystalline quartz, and an admixture of carbonaceous material, which differ from the host sediment mineralogy and do not show replacement or encrustation. The fossil-bearing interval immediately overlies strata of Gaskiers age and can be bracketed within 580–541 Ma, but it is estimated to be ca. 575 Ma on the basis of averaged sedimentation rates and biostratigraphic correlations with Ediacaran biota found in up-section deposits of ca. 558–555 Ma. Future new findings of such fossils in different preservation modes and further multi-collector inductively coupled plasma mass spectrometry, which shows the silicon fractionation and traces its biogenic origin versus inorganic mineralization, may corroborate the interpretation of biogenic silicification of these earliest skeletal fossils. Text Arctic BioOne Online Journals Arctic Digermulen ENVELOPE(11.560,11.560,64.731,64.731) Norway Stáhpogieddi ENVELOPE(28.018,28.018,70.543,70.543) Journal of Paleontology 95 3 440 475 |
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Open Polar |
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BioOne Online Journals |
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ftbioone |
language |
English |
description |
In this study, a new assemblage of Ediacaran metazoan fossils is reported from the basal Stáhpogieddi Formation on the Digermulen Peninsula of Arctic Norway, including Anulitubus n. gen. Moczydłowska in Moczydłowska et al., Anulitubus formosus n. gen. n. sp. Moczydłowska in Moczydłowska et al., Coniculus n. gen. Moczydłowska in Moczydłowska et al., Coniculus elegantis n. gen. n. sp. Moczydłowska in Moczydłowska et al., Fistula n. gen. Moczydłowska in Moczydłowska et al., and Fistula crenulata n. gen. n. sp. Moczydłowska in Moczydłowska et al. The specimens are three-dimensionally preserved and include tubular and conical skeletons that are morphologically distinguished by their body-wall constructions, radial symmetry, polarity, segmentation, and annulation. The skeletons are interpreted to be biomineralized by primary silica based on computed micro-tomographic, petrographic, geochemical, and spectroscopic evidence of originally rigid body wall with layers of constant thicknesses, composed of opal, microcrystalline quartz, and an admixture of carbonaceous material, which differ from the host sediment mineralogy and do not show replacement or encrustation. The fossil-bearing interval immediately overlies strata of Gaskiers age and can be bracketed within 580–541 Ma, but it is estimated to be ca. 575 Ma on the basis of averaged sedimentation rates and biostratigraphic correlations with Ediacaran biota found in up-section deposits of ca. 558–555 Ma. Future new findings of such fossils in different preservation modes and further multi-collector inductively coupled plasma mass spectrometry, which shows the silicon fractionation and traces its biogenic origin versus inorganic mineralization, may corroborate the interpretation of biogenic silicification of these earliest skeletal fossils. |
author2 |
Małgorzata Moczydłowska Benjamin P. Kear Daniel Snitting Lei Liu Peter Lazor Jarosław Majka |
format |
Text |
author |
Małgorzata Moczydłowska Benjamin P. Kear Daniel Snitting Lei Liu Peter Lazor Jarosław Majka |
spellingShingle |
Małgorzata Moczydłowska Benjamin P. Kear Daniel Snitting Lei Liu Peter Lazor Jarosław Majka Ediacaran metazoan fossils with siliceous skeletons from the Digermulen Peninsula of Arctic Norway |
author_facet |
Małgorzata Moczydłowska Benjamin P. Kear Daniel Snitting Lei Liu Peter Lazor Jarosław Majka |
author_sort |
Małgorzata Moczydłowska |
title |
Ediacaran metazoan fossils with siliceous skeletons from the Digermulen Peninsula of Arctic Norway |
title_short |
Ediacaran metazoan fossils with siliceous skeletons from the Digermulen Peninsula of Arctic Norway |
title_full |
Ediacaran metazoan fossils with siliceous skeletons from the Digermulen Peninsula of Arctic Norway |
title_fullStr |
Ediacaran metazoan fossils with siliceous skeletons from the Digermulen Peninsula of Arctic Norway |
title_full_unstemmed |
Ediacaran metazoan fossils with siliceous skeletons from the Digermulen Peninsula of Arctic Norway |
title_sort |
ediacaran metazoan fossils with siliceous skeletons from the digermulen peninsula of arctic norway |
publisher |
The Paleontological Society |
publishDate |
2021 |
url |
https://doi.org/10.1017/jpa.2020.105 |
op_coverage |
world |
long_lat |
ENVELOPE(11.560,11.560,64.731,64.731) ENVELOPE(28.018,28.018,70.543,70.543) |
geographic |
Arctic Digermulen Norway Stáhpogieddi |
geographic_facet |
Arctic Digermulen Norway Stáhpogieddi |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
https://doi.org/10.1017/jpa.2020.105 |
op_relation |
doi:10.1017/jpa.2020.105 |
op_rights |
All rights reserved. |
op_doi |
https://doi.org/10.1017/jpa.2020.105 |
container_title |
Journal of Paleontology |
container_volume |
95 |
container_issue |
3 |
container_start_page |
440 |
op_container_end_page |
475 |
_version_ |
1800746405366595584 |