A New Ophthalmosaurid (Ichthyosauria) from Svalbard, Norway, and Evolution of the Ichthyopterygian Pelvic Girdle
In spite of a fossil record spanning over 150 million years, pelvic girdle evolution in Ichthyopterygia is poorly known. Here, we examine pelvic girdle size relationships using quantitative methods and new ophthalmosaurid material from the Slottsmøya Member Lagerstätte of Svalbard, Norway. One of th...
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ftoslouniv:oai:www.duo.uio.no:10852/61500 2023-05-15T18:29:42+02:00 A New Ophthalmosaurid (Ichthyosauria) from Svalbard, Norway, and Evolution of the Ichthyopterygian Pelvic Girdle Delsett, Lene Liebe Roberts, Aubrey Jane Druckenmiller, Patrick Scott Hurum, Jørn Harald 2017-04-05T09:26:40Z http://hdl.handle.net/10852/61500 http://urn.nb.no/URN:NBN:no-64111 https://doi.org/10.1371/journal.pone.0169971 EN eng Public Library of Science (PLoS) http://urn.nb.no/URN:NBN:no-64111 Delsett, Lene Liebe Roberts, Aubrey Jane Druckenmiller, Patrick Scott Hurum, Jørn Harald . A New Ophthalmosaurid (Ichthyosauria) from Svalbard, Norway, and Evolution of the Ichthyopterygian Pelvic Girdle. PLoS ONE. 2017, 12(1) http://hdl.handle.net/10852/61500 1463693 info:ofi/fmt:kev:mtx:ctx&ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=PLoS ONE&rft.volume=12&rft.spage=&rft.date=2017 PLoS ONE 12 1 http://dx.doi.org/10.1371/journal.pone.0169971 URN:NBN:no-64111 Fulltext https://www.duo.uio.no/bitstream/handle/10852/61500/2/delsett_2016_journal.pone.0169971.pdf CC0 1.0 Universal https://creativecommons.org/publicdomain/zero/1.0/ CC0 PDM 1932-6203 Journal article Tidsskriftartikkel Peer reviewed PublishedVersion 2017 ftoslouniv https://doi.org/10.1371/journal.pone.0169971 2020-06-21T08:51:46Z In spite of a fossil record spanning over 150 million years, pelvic girdle evolution in Ichthyopterygia is poorly known. Here, we examine pelvic girdle size relationships using quantitative methods and new ophthalmosaurid material from the Slottsmøya Member Lagerstätte of Svalbard, Norway. One of these new specimens, which preserves the most complete ichthyosaur pelvic girdle from the Cretaceous, is described herein as a new taxon, Keilhauia nui gen. et sp. nov. It represents the most complete Berriasian ichthyosaur known and the youngest yet described from the Slottsmøya Member. It is diagnosed on the basis of two autapomorphies from the pelvic girdle, including an ilium that is anteroposteriorly expanded at its dorsal end and an ischiopubis that is shorter or subequal in length to the femur, as well as a unique character combination. The Slottsmøya Member Lagerstätte ichthyosaurs are significant in that they represent a diverse assemblage of ophthalmosaurids that existed immediately preceding and across the Jurassic–Cretaceous boundary. They also exhibit considerable variation in pelvic girdle morphology, and expand the known range in size variation of pelvic girdle elements in the clade. Article in Journal/Newspaper Svalbard Universitet i Oslo: Digitale utgivelser ved UiO (DUO) Norway Slottsmøya ENVELOPE(17.415,17.415,78.046,78.046) Svalbard PLOS ONE 12 1 e0169971 |
institution |
Open Polar |
collection |
Universitet i Oslo: Digitale utgivelser ved UiO (DUO) |
op_collection_id |
ftoslouniv |
language |
English |
description |
In spite of a fossil record spanning over 150 million years, pelvic girdle evolution in Ichthyopterygia is poorly known. Here, we examine pelvic girdle size relationships using quantitative methods and new ophthalmosaurid material from the Slottsmøya Member Lagerstätte of Svalbard, Norway. One of these new specimens, which preserves the most complete ichthyosaur pelvic girdle from the Cretaceous, is described herein as a new taxon, Keilhauia nui gen. et sp. nov. It represents the most complete Berriasian ichthyosaur known and the youngest yet described from the Slottsmøya Member. It is diagnosed on the basis of two autapomorphies from the pelvic girdle, including an ilium that is anteroposteriorly expanded at its dorsal end and an ischiopubis that is shorter or subequal in length to the femur, as well as a unique character combination. The Slottsmøya Member Lagerstätte ichthyosaurs are significant in that they represent a diverse assemblage of ophthalmosaurids that existed immediately preceding and across the Jurassic–Cretaceous boundary. They also exhibit considerable variation in pelvic girdle morphology, and expand the known range in size variation of pelvic girdle elements in the clade. |
format |
Article in Journal/Newspaper |
author |
Delsett, Lene Liebe Roberts, Aubrey Jane Druckenmiller, Patrick Scott Hurum, Jørn Harald |
spellingShingle |
Delsett, Lene Liebe Roberts, Aubrey Jane Druckenmiller, Patrick Scott Hurum, Jørn Harald A New Ophthalmosaurid (Ichthyosauria) from Svalbard, Norway, and Evolution of the Ichthyopterygian Pelvic Girdle |
author_facet |
Delsett, Lene Liebe Roberts, Aubrey Jane Druckenmiller, Patrick Scott Hurum, Jørn Harald |
author_sort |
Delsett, Lene Liebe |
title |
A New Ophthalmosaurid (Ichthyosauria) from Svalbard, Norway, and Evolution of the Ichthyopterygian Pelvic Girdle |
title_short |
A New Ophthalmosaurid (Ichthyosauria) from Svalbard, Norway, and Evolution of the Ichthyopterygian Pelvic Girdle |
title_full |
A New Ophthalmosaurid (Ichthyosauria) from Svalbard, Norway, and Evolution of the Ichthyopterygian Pelvic Girdle |
title_fullStr |
A New Ophthalmosaurid (Ichthyosauria) from Svalbard, Norway, and Evolution of the Ichthyopterygian Pelvic Girdle |
title_full_unstemmed |
A New Ophthalmosaurid (Ichthyosauria) from Svalbard, Norway, and Evolution of the Ichthyopterygian Pelvic Girdle |
title_sort |
new ophthalmosaurid (ichthyosauria) from svalbard, norway, and evolution of the ichthyopterygian pelvic girdle |
publisher |
Public Library of Science (PLoS) |
publishDate |
2017 |
url |
http://hdl.handle.net/10852/61500 http://urn.nb.no/URN:NBN:no-64111 https://doi.org/10.1371/journal.pone.0169971 |
long_lat |
ENVELOPE(17.415,17.415,78.046,78.046) |
geographic |
Norway Slottsmøya Svalbard |
geographic_facet |
Norway Slottsmøya Svalbard |
genre |
Svalbard |
genre_facet |
Svalbard |
op_source |
1932-6203 |
op_relation |
http://urn.nb.no/URN:NBN:no-64111 Delsett, Lene Liebe Roberts, Aubrey Jane Druckenmiller, Patrick Scott Hurum, Jørn Harald . A New Ophthalmosaurid (Ichthyosauria) from Svalbard, Norway, and Evolution of the Ichthyopterygian Pelvic Girdle. PLoS ONE. 2017, 12(1) http://hdl.handle.net/10852/61500 1463693 info:ofi/fmt:kev:mtx:ctx&ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=PLoS ONE&rft.volume=12&rft.spage=&rft.date=2017 PLoS ONE 12 1 http://dx.doi.org/10.1371/journal.pone.0169971 URN:NBN:no-64111 Fulltext https://www.duo.uio.no/bitstream/handle/10852/61500/2/delsett_2016_journal.pone.0169971.pdf |
op_rights |
CC0 1.0 Universal https://creativecommons.org/publicdomain/zero/1.0/ |
op_rightsnorm |
CC0 PDM |
op_doi |
https://doi.org/10.1371/journal.pone.0169971 |
container_title |
PLOS ONE |
container_volume |
12 |
container_issue |
1 |
container_start_page |
e0169971 |
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1766212993047068672 |