Ediacaran metazoan fossils with siliceous skeletons from the Digermulen Peninsula of Arctic Norway
Abstract 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...
Published in: | Journal of Paleontology |
---|---|
Main Authors: | , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Cambridge University Press (CUP)
2021
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1017/jpa.2020.105 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022336020001055 |
id |
crcambridgeupr:10.1017/jpa.2020.105 |
---|---|
record_format |
openpolar |
spelling |
crcambridgeupr:10.1017/jpa.2020.105 2024-04-07T07:50:11+00:00 Ediacaran metazoan fossils with siliceous skeletons from the Digermulen Peninsula of Arctic Norway Moczydłowska, Małgorzata Kear, Benjamin P. Snitting, Daniel Liu, Lei Lazor, Peter Majka, Jarosław 2021 http://dx.doi.org/10.1017/jpa.2020.105 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022336020001055 en eng Cambridge University Press (CUP) http://creativecommons.org/licenses/by/4.0/ Journal of Paleontology volume 95, issue 3, page 440-475 ISSN 0022-3360 1937-2337 Paleontology journal-article 2021 crcambridgeupr https://doi.org/10.1017/jpa.2020.105 2024-03-08T00:36:14Z Abstract 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. UUID: https://zoobank.org/6bccada1-870e-47b0-b819-82685152ea54 Article in Journal/Newspaper Arctic Cambridge University Press Arctic Norway Digermulen ENVELOPE(11.560,11.560,64.731,64.731) Stáhpogieddi ENVELOPE(28.018,28.018,70.543,70.543) Journal of Paleontology 95 3 440 475 |
institution |
Open Polar |
collection |
Cambridge University Press |
op_collection_id |
crcambridgeupr |
language |
English |
topic |
Paleontology |
spellingShingle |
Paleontology Moczydłowska, Małgorzata Kear, Benjamin P. Snitting, Daniel Liu, Lei Lazor, Peter Majka, Jarosław Ediacaran metazoan fossils with siliceous skeletons from the Digermulen Peninsula of Arctic Norway |
topic_facet |
Paleontology |
description |
Abstract 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. UUID: https://zoobank.org/6bccada1-870e-47b0-b819-82685152ea54 |
format |
Article in Journal/Newspaper |
author |
Moczydłowska, Małgorzata Kear, Benjamin P. Snitting, Daniel Liu, Lei Lazor, Peter Majka, Jarosław |
author_facet |
Moczydłowska, Małgorzata Kear, Benjamin P. Snitting, Daniel Liu, Lei Lazor, Peter Majka, Jarosław |
author_sort |
Moczydłowska, Małgorzata |
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 |
Cambridge University Press (CUP) |
publishDate |
2021 |
url |
http://dx.doi.org/10.1017/jpa.2020.105 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022336020001055 |
long_lat |
ENVELOPE(11.560,11.560,64.731,64.731) ENVELOPE(28.018,28.018,70.543,70.543) |
geographic |
Arctic Norway Digermulen Stáhpogieddi |
geographic_facet |
Arctic Norway Digermulen Stáhpogieddi |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
Journal of Paleontology volume 95, issue 3, page 440-475 ISSN 0022-3360 1937-2337 |
op_rights |
http://creativecommons.org/licenses/by/4.0/ |
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_ |
1795664858164756480 |