Body plan of Dickinsonia , the oldest mobile animals
ABSTRACT Materials collected on the territory of the southeastern White Sea area, including diversely preserved body imprints, combined body-trace fossils, specimens with signs of intravital damage and regeneration, and extended ontogenetic series, make it possible to significantly widen the data on...
Published in: | Earth and Environmental Science Transactions of the Royal Society of Edinburgh |
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Cambridge University Press (CUP)
2023
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Online Access: | http://dx.doi.org/10.1017/s175569102300004x https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S175569102300004X |
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crcambridgeupr:10.1017/s175569102300004x 2023-06-11T04:17:31+02:00 Body plan of Dickinsonia , the oldest mobile animals IVANTSOV, Andrey Yu ZAKREVSKAYA, Maria 2023 http://dx.doi.org/10.1017/s175569102300004x https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S175569102300004X en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Earth and Environmental Science Transactions of the Royal Society of Edinburgh page 1-14 ISSN 1755-6910 1755-6929 General Earth and Planetary Sciences General Environmental Science journal-article 2023 crcambridgeupr https://doi.org/10.1017/s175569102300004x 2023-05-01T18:22:05Z ABSTRACT Materials collected on the territory of the southeastern White Sea area, including diversely preserved body imprints, combined body-trace fossils, specimens with signs of intravital damage and regeneration, and extended ontogenetic series, make it possible to significantly widen the data on the body plan and biology of Dickinsonia , the oldest known mobile animal, included in the Late Precambrian taxon of high rank, Proarticulata. A number of reconstructed anatomical features were added to the obvious directly observed features of Dickinsonia , such as a consistent body shape lacking lateral appendages and temporary outgrowths, transverse differentiation, and anterior–posterior polarity. These reconstructed features include dorsoventral polarity, ciliated mucus-secreting epithelium underlain by a basal lamina, two rows of blind food-gathering pockets, absence of a through-gut, nervous system of diffusive type, axial support band and muscle fibres. Such a set of features indicates the affinity of Dickinsonia and Proarticulata as a whole (the only known Ediacaran Metazoa) to Urbilateria, a hypothetical ancestor of bilaterally symmetrical animals. Article in Journal/Newspaper White Sea Cambridge University Press (via Crossref) White Sea Earth and Environmental Science Transactions of the Royal Society of Edinburgh 1 14 |
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Open Polar |
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Cambridge University Press (via Crossref) |
op_collection_id |
crcambridgeupr |
language |
English |
topic |
General Earth and Planetary Sciences General Environmental Science |
spellingShingle |
General Earth and Planetary Sciences General Environmental Science IVANTSOV, Andrey Yu ZAKREVSKAYA, Maria Body plan of Dickinsonia , the oldest mobile animals |
topic_facet |
General Earth and Planetary Sciences General Environmental Science |
description |
ABSTRACT Materials collected on the territory of the southeastern White Sea area, including diversely preserved body imprints, combined body-trace fossils, specimens with signs of intravital damage and regeneration, and extended ontogenetic series, make it possible to significantly widen the data on the body plan and biology of Dickinsonia , the oldest known mobile animal, included in the Late Precambrian taxon of high rank, Proarticulata. A number of reconstructed anatomical features were added to the obvious directly observed features of Dickinsonia , such as a consistent body shape lacking lateral appendages and temporary outgrowths, transverse differentiation, and anterior–posterior polarity. These reconstructed features include dorsoventral polarity, ciliated mucus-secreting epithelium underlain by a basal lamina, two rows of blind food-gathering pockets, absence of a through-gut, nervous system of diffusive type, axial support band and muscle fibres. Such a set of features indicates the affinity of Dickinsonia and Proarticulata as a whole (the only known Ediacaran Metazoa) to Urbilateria, a hypothetical ancestor of bilaterally symmetrical animals. |
format |
Article in Journal/Newspaper |
author |
IVANTSOV, Andrey Yu ZAKREVSKAYA, Maria |
author_facet |
IVANTSOV, Andrey Yu ZAKREVSKAYA, Maria |
author_sort |
IVANTSOV, Andrey Yu |
title |
Body plan of Dickinsonia , the oldest mobile animals |
title_short |
Body plan of Dickinsonia , the oldest mobile animals |
title_full |
Body plan of Dickinsonia , the oldest mobile animals |
title_fullStr |
Body plan of Dickinsonia , the oldest mobile animals |
title_full_unstemmed |
Body plan of Dickinsonia , the oldest mobile animals |
title_sort |
body plan of dickinsonia , the oldest mobile animals |
publisher |
Cambridge University Press (CUP) |
publishDate |
2023 |
url |
http://dx.doi.org/10.1017/s175569102300004x https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S175569102300004X |
geographic |
White Sea |
geographic_facet |
White Sea |
genre |
White Sea |
genre_facet |
White Sea |
op_source |
Earth and Environmental Science Transactions of the Royal Society of Edinburgh page 1-14 ISSN 1755-6910 1755-6929 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1017/s175569102300004x |
container_title |
Earth and Environmental Science Transactions of the Royal Society of Edinburgh |
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1 |
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14 |
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1768376778311598080 |