Shedding light on the oldest oceanic reptiles: synchrotron microtomography of early ichthyosaur fossils from the Arctic ...
This study uses fossils of the geologically oldest-known pelagic marine reptiles to elucidate the adaptive evolution, timescale, and environmental context of the earliest tetrapod transition to life in the open sea. The remains include an articulated skull and tail-fin section representing at least...
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European Synchrotron Radiation Facility
2025
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Online Access: | https://dx.doi.org/10.15151/esrf-es-761256060 https://doi.esrf.fr/10.15151/ESRF-ES-761256060 |
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ftdatacite:10.15151/esrf-es-761256060 2023-08-27T04:07:31+02:00 Shedding light on the oldest oceanic reptiles: synchrotron microtomography of early ichthyosaur fossils from the Arctic ... KEAR, Benjamin 2025 https://dx.doi.org/10.15151/esrf-es-761256060 https://doi.esrf.fr/10.15151/ESRF-ES-761256060 en eng European Synchrotron Radiation Facility Earth Sciences ES-1146 BM18 dataset Experiment Session Dataset 2025 ftdatacite https://doi.org/10.15151/esrf-es-761256060 2023-08-07T14:24:23Z This study uses fossils of the geologically oldest-known pelagic marine reptiles to elucidate the adaptive evolution, timescale, and environmental context of the earliest tetrapod transition to life in the open sea. The remains include an articulated skull and tail-fin section representing at least two different earliest Triassic (~249 Ma) ichthyosaur taxa. These were discovered on Svalbard in the Scandinavian Arctic. The specimens are well-preserved but encased in hard limestone concretions that are difficult to prepare without damaging the fragile bones. The dense matrix also has crystalline calcite inclusions that are resistant to conventional micro-CT. High-resolution PPC-SR-micro-CT is therefore crucial to comprehensively analyse the osteology, functional morphology, and bone microstructure of these unique skeletal remnants. Such data will underpin accurate reconstructions of lifestyle and determine both the phylogenetic and palaeoecological implications of the first ichthyosaurs. ... Dataset Arctic Svalbard DataCite Metadata Store (German National Library of Science and Technology) Arctic Svalbard |
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Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
English |
topic |
Earth Sciences ES-1146 BM18 |
spellingShingle |
Earth Sciences ES-1146 BM18 KEAR, Benjamin Shedding light on the oldest oceanic reptiles: synchrotron microtomography of early ichthyosaur fossils from the Arctic ... |
topic_facet |
Earth Sciences ES-1146 BM18 |
description |
This study uses fossils of the geologically oldest-known pelagic marine reptiles to elucidate the adaptive evolution, timescale, and environmental context of the earliest tetrapod transition to life in the open sea. The remains include an articulated skull and tail-fin section representing at least two different earliest Triassic (~249 Ma) ichthyosaur taxa. These were discovered on Svalbard in the Scandinavian Arctic. The specimens are well-preserved but encased in hard limestone concretions that are difficult to prepare without damaging the fragile bones. The dense matrix also has crystalline calcite inclusions that are resistant to conventional micro-CT. High-resolution PPC-SR-micro-CT is therefore crucial to comprehensively analyse the osteology, functional morphology, and bone microstructure of these unique skeletal remnants. Such data will underpin accurate reconstructions of lifestyle and determine both the phylogenetic and palaeoecological implications of the first ichthyosaurs. ... |
format |
Dataset |
author |
KEAR, Benjamin |
author_facet |
KEAR, Benjamin |
author_sort |
KEAR, Benjamin |
title |
Shedding light on the oldest oceanic reptiles: synchrotron microtomography of early ichthyosaur fossils from the Arctic ... |
title_short |
Shedding light on the oldest oceanic reptiles: synchrotron microtomography of early ichthyosaur fossils from the Arctic ... |
title_full |
Shedding light on the oldest oceanic reptiles: synchrotron microtomography of early ichthyosaur fossils from the Arctic ... |
title_fullStr |
Shedding light on the oldest oceanic reptiles: synchrotron microtomography of early ichthyosaur fossils from the Arctic ... |
title_full_unstemmed |
Shedding light on the oldest oceanic reptiles: synchrotron microtomography of early ichthyosaur fossils from the Arctic ... |
title_sort |
shedding light on the oldest oceanic reptiles: synchrotron microtomography of early ichthyosaur fossils from the arctic ... |
publisher |
European Synchrotron Radiation Facility |
publishDate |
2025 |
url |
https://dx.doi.org/10.15151/esrf-es-761256060 https://doi.esrf.fr/10.15151/ESRF-ES-761256060 |
geographic |
Arctic Svalbard |
geographic_facet |
Arctic Svalbard |
genre |
Arctic Svalbard |
genre_facet |
Arctic Svalbard |
op_doi |
https://doi.org/10.15151/esrf-es-761256060 |
_version_ |
1775348292915298304 |