A new small-sized penguin from the late Eocene of Seymour Island with additional material of Mesetaornis polaris
Here, we report on two tarsometatarsi assignable to relatively small-sized Eocene Antarctic penguins, housed in the palaeozoological collections of Naturhistoriska riksmuseet, Stockholm. The Priabonian fossils were collected by museum staff during two joined Argentinean and Swedish expeditions from...
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Naturhistoriska riksmuseet, Enheten för paleobiologi
2021
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ftnrm:oai:DiVA.org:nrm-4289 2023-05-15T14:05:22+02:00 A new small-sized penguin from the late Eocene of Seymour Island with additional material of Mesetaornis polaris Jadwiszczak, Piotr Reguero, Marcelo Mörs, Thomas 2021 application/pdf http://urn.kb.se/resolve?urn=urn:nbn:se:nrm:diva-4289 https://doi.org/10.1080/11035897.2021.1900385 eng eng Naturhistoriska riksmuseet, Enheten för paleobiologi Faculty of Biology, University of Bialystok, Bialystok, Poland Instituto Antártico Argentino, Campus Miguelete, Buenos Aires, Argentina London GFF, 1103-5897, 2021, 143:2-3, s. 283-291 orcid:0000-0002-5263-1125 orcid:0000-0003-0875-8484 orcid:0000-0003-2268-5824 http://urn.kb.se/resolve?urn=urn:nbn:se:nrm:diva-4289 doi:10.1080/11035897.2021.1900385 info:eu-repo/semantics/openAccess Paleontology Geology Paleogene Antarctic Peninsula Submeseta Formation early Sphenisciformes Marambiornopsis Mesetaornis Other Earth and Related Environmental Sciences Annan geovetenskap och miljövetenskap Article in journal info:eu-repo/semantics/article text 2021 ftnrm https://doi.org/10.1080/11035897.2021.1900385 2021-12-16T17:17:02Z Here, we report on two tarsometatarsi assignable to relatively small-sized Eocene Antarctic penguins, housed in the palaeozoological collections of Naturhistoriska riksmuseet, Stockholm. The Priabonian fossils were collected by museum staff during two joined Argentinean and Swedish expeditions from the Submeseta Formation on Seymour Island, Antarctic Peninsula. One specimen represents a new early sphenisciform, Marambiornopsis sobrali gen. et sp. nov., the sixth small-sized tarsometatarsus-based penguin species known from the Antarctic Eocene. Micro-CT scanning revealed the presence of quite large and essentially empty metatarsal medullary cavities. The second fossil can unequivocally be assigned to Mesetaornis polaris. The specimen represents only the second record of this species and supposedly a relatively young bird. Micro-CT scanning showed that in M. polaris the metatarsal medullary cavities are less developed than in M. sobrali – the cortical and trabecular bone tissues left rather little room for significant hollow spaces. Both specimens also differ in overall density of their trabecular networks. We thank the Argentinean Antarctic Institute (IAA-DNA), the Argentinean Air Force and the Swedish Polar Research Secretariat (SPFS) for logistical support in Antarctica and Jonas Hagström (NRM) for assistance in the field. We thank Vivi Vajda (NRM) for making the CT scanning possible, Ashley Kruger (NRM) for the CT-scanning. Financial support through SYNTHESYS funding made available by the European Community – Research Infrastructure Action under the FP6 Structuring the European Research Area Programme, project SE-TAF-4399 to PJ; from the Consejo Nacional de lnvestigaciones Cientificas y Tecnicas (CONICET grant PIP 0462) and from the Argentinean National Agency for Promotion of Science and Technology (ANPCyT grant PICTO 0093/2010) to MR; from the Swedish Research Council (VR Grant 2009-4447) and from the Carl Tryggers Foundation (CTS grant 20:300) to TM is gratefully acknowledged. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Antarctica Seymour Island Swedish Polar Research Secretariat Swedish Museum of Natural History: Publications (DiVA) Antarctic The Antarctic Antarctic Peninsula Seymour ENVELOPE(-56.767,-56.767,-64.283,-64.283) Seymour Island ENVELOPE(-56.750,-56.750,-64.283,-64.283) GFF 143 2-3 283 291 |
institution |
Open Polar |
collection |
Swedish Museum of Natural History: Publications (DiVA) |
op_collection_id |
ftnrm |
language |
English |
topic |
Paleontology Geology Paleogene Antarctic Peninsula Submeseta Formation early Sphenisciformes Marambiornopsis Mesetaornis Other Earth and Related Environmental Sciences Annan geovetenskap och miljövetenskap |
spellingShingle |
Paleontology Geology Paleogene Antarctic Peninsula Submeseta Formation early Sphenisciformes Marambiornopsis Mesetaornis Other Earth and Related Environmental Sciences Annan geovetenskap och miljövetenskap Jadwiszczak, Piotr Reguero, Marcelo Mörs, Thomas A new small-sized penguin from the late Eocene of Seymour Island with additional material of Mesetaornis polaris |
topic_facet |
Paleontology Geology Paleogene Antarctic Peninsula Submeseta Formation early Sphenisciformes Marambiornopsis Mesetaornis Other Earth and Related Environmental Sciences Annan geovetenskap och miljövetenskap |
description |
Here, we report on two tarsometatarsi assignable to relatively small-sized Eocene Antarctic penguins, housed in the palaeozoological collections of Naturhistoriska riksmuseet, Stockholm. The Priabonian fossils were collected by museum staff during two joined Argentinean and Swedish expeditions from the Submeseta Formation on Seymour Island, Antarctic Peninsula. One specimen represents a new early sphenisciform, Marambiornopsis sobrali gen. et sp. nov., the sixth small-sized tarsometatarsus-based penguin species known from the Antarctic Eocene. Micro-CT scanning revealed the presence of quite large and essentially empty metatarsal medullary cavities. The second fossil can unequivocally be assigned to Mesetaornis polaris. The specimen represents only the second record of this species and supposedly a relatively young bird. Micro-CT scanning showed that in M. polaris the metatarsal medullary cavities are less developed than in M. sobrali – the cortical and trabecular bone tissues left rather little room for significant hollow spaces. Both specimens also differ in overall density of their trabecular networks. We thank the Argentinean Antarctic Institute (IAA-DNA), the Argentinean Air Force and the Swedish Polar Research Secretariat (SPFS) for logistical support in Antarctica and Jonas Hagström (NRM) for assistance in the field. We thank Vivi Vajda (NRM) for making the CT scanning possible, Ashley Kruger (NRM) for the CT-scanning. Financial support through SYNTHESYS funding made available by the European Community – Research Infrastructure Action under the FP6 Structuring the European Research Area Programme, project SE-TAF-4399 to PJ; from the Consejo Nacional de lnvestigaciones Cientificas y Tecnicas (CONICET grant PIP 0462) and from the Argentinean National Agency for Promotion of Science and Technology (ANPCyT grant PICTO 0093/2010) to MR; from the Swedish Research Council (VR Grant 2009-4447) and from the Carl Tryggers Foundation (CTS grant 20:300) to TM is gratefully acknowledged. |
format |
Article in Journal/Newspaper |
author |
Jadwiszczak, Piotr Reguero, Marcelo Mörs, Thomas |
author_facet |
Jadwiszczak, Piotr Reguero, Marcelo Mörs, Thomas |
author_sort |
Jadwiszczak, Piotr |
title |
A new small-sized penguin from the late Eocene of Seymour Island with additional material of Mesetaornis polaris |
title_short |
A new small-sized penguin from the late Eocene of Seymour Island with additional material of Mesetaornis polaris |
title_full |
A new small-sized penguin from the late Eocene of Seymour Island with additional material of Mesetaornis polaris |
title_fullStr |
A new small-sized penguin from the late Eocene of Seymour Island with additional material of Mesetaornis polaris |
title_full_unstemmed |
A new small-sized penguin from the late Eocene of Seymour Island with additional material of Mesetaornis polaris |
title_sort |
new small-sized penguin from the late eocene of seymour island with additional material of mesetaornis polaris |
publisher |
Naturhistoriska riksmuseet, Enheten för paleobiologi |
publishDate |
2021 |
url |
http://urn.kb.se/resolve?urn=urn:nbn:se:nrm:diva-4289 https://doi.org/10.1080/11035897.2021.1900385 |
long_lat |
ENVELOPE(-56.767,-56.767,-64.283,-64.283) ENVELOPE(-56.750,-56.750,-64.283,-64.283) |
geographic |
Antarctic The Antarctic Antarctic Peninsula Seymour Seymour Island |
geographic_facet |
Antarctic The Antarctic Antarctic Peninsula Seymour Seymour Island |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctica Seymour Island Swedish Polar Research Secretariat |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctica Seymour Island Swedish Polar Research Secretariat |
op_relation |
GFF, 1103-5897, 2021, 143:2-3, s. 283-291 orcid:0000-0002-5263-1125 orcid:0000-0003-0875-8484 orcid:0000-0003-2268-5824 http://urn.kb.se/resolve?urn=urn:nbn:se:nrm:diva-4289 doi:10.1080/11035897.2021.1900385 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1080/11035897.2021.1900385 |
container_title |
GFF |
container_volume |
143 |
container_issue |
2-3 |
container_start_page |
283 |
op_container_end_page |
291 |
_version_ |
1766277193690775552 |