A Large Ornithurine Bird (Tingmiatornis arctica) from the Turonian High Arctic: Climatic and Evolutionary Implications
Bird fossils from Turonian (ca. 90Ma) sediments of Axel Heiberg Island (High Canadian Arctic) are among the earliest North American records. The morphology of a large well-preserved humerus supports identification of a new volant, possibly diving, ornithurine species (Tingmiatornis arctica). The new...
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2018
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dataone:doi:10.18739/A21V5BF6V 2024-10-03T18:45:46+00:00 A Large Ornithurine Bird (Tingmiatornis arctica) from the Turonian High Arctic: Climatic and Evolutionary Implications John Tarduno Expedition Fiord, Axel Heiberg Island, Canada ENVELOPE(-92.1817,-92.1817,79.3917,79.3917) BEGINDATE: 2000-01-01T00:00:00Z ENDDATE: 2000-01-01T00:00:00Z 2018-01-05T00:00:00Z https://doi.org/10.18739/A21V5BF6V unknown Arctic Data Center Arctic Paleoclimate Ornithurine Cretaceous evolution Dataset 2018 dataone:urn:node:ARCTIC https://doi.org/10.18739/A21V5BF6V 2024-10-03T18:18:19Z Bird fossils from Turonian (ca. 90Ma) sediments of Axel Heiberg Island (High Canadian Arctic) are among the earliest North American records. The morphology of a large well-preserved humerus supports identification of a new volant, possibly diving, ornithurine species (Tingmiatornis arctica). The new bird fossils are part of a freshwater vertebrate fossil assemblage that documents a period of extreme climatic warmth without seasonal ice, with minimum mean annual temperatures of 14°C. The extreme warmth allowed species expansion and establishment of an ecosystem more easily able to support large birds, especially in fresh water bodies such as those present in the Turonian High Arctic. Review of the high latitude distribution of Northern Hemisphere Mesozoic birds shows only ornithurine birds are known to have occupied these regions. We propose physiological differences in ornithurines such as growth rate may explain their latitudinal distribution especially as temperatures decline later in the Cretaceous. Distribution and physiology merit consideration as factors in their preferential survival of parts of one ornithurine lineage, Aves, through the K/Pg boundary. Digital files of an open access manuscript and supplemental materials file and digital copies of figures that went into the manuscript are included with this data set upload. Samples were collected during field seasons on Axel Heiberg Island. Cat scan imagery was conducted at the University of Texas, Austin. Three animations resulting from cat scan imagery are included. Dataset Arctic Axel Heiberg Island Arctic Data Center (via DataONE) Arctic Austin Canada Heiberg ENVELOPE(13.964,13.964,66.424,66.424) Axel Heiberg Island ENVELOPE(-91.001,-91.001,79.752,79.752) Expedition Fiord ENVELOPE(-92.001,-92.001,79.335,79.335) ENVELOPE(-92.1817,-92.1817,79.3917,79.3917) |
institution |
Open Polar |
collection |
Arctic Data Center (via DataONE) |
op_collection_id |
dataone:urn:node:ARCTIC |
language |
unknown |
topic |
Arctic Paleoclimate Ornithurine Cretaceous evolution |
spellingShingle |
Arctic Paleoclimate Ornithurine Cretaceous evolution John Tarduno A Large Ornithurine Bird (Tingmiatornis arctica) from the Turonian High Arctic: Climatic and Evolutionary Implications |
topic_facet |
Arctic Paleoclimate Ornithurine Cretaceous evolution |
description |
Bird fossils from Turonian (ca. 90Ma) sediments of Axel Heiberg Island (High Canadian Arctic) are among the earliest North American records. The morphology of a large well-preserved humerus supports identification of a new volant, possibly diving, ornithurine species (Tingmiatornis arctica). The new bird fossils are part of a freshwater vertebrate fossil assemblage that documents a period of extreme climatic warmth without seasonal ice, with minimum mean annual temperatures of 14°C. The extreme warmth allowed species expansion and establishment of an ecosystem more easily able to support large birds, especially in fresh water bodies such as those present in the Turonian High Arctic. Review of the high latitude distribution of Northern Hemisphere Mesozoic birds shows only ornithurine birds are known to have occupied these regions. We propose physiological differences in ornithurines such as growth rate may explain their latitudinal distribution especially as temperatures decline later in the Cretaceous. Distribution and physiology merit consideration as factors in their preferential survival of parts of one ornithurine lineage, Aves, through the K/Pg boundary. Digital files of an open access manuscript and supplemental materials file and digital copies of figures that went into the manuscript are included with this data set upload. Samples were collected during field seasons on Axel Heiberg Island. Cat scan imagery was conducted at the University of Texas, Austin. Three animations resulting from cat scan imagery are included. |
format |
Dataset |
author |
John Tarduno |
author_facet |
John Tarduno |
author_sort |
John Tarduno |
title |
A Large Ornithurine Bird (Tingmiatornis arctica) from the Turonian High Arctic: Climatic and Evolutionary Implications |
title_short |
A Large Ornithurine Bird (Tingmiatornis arctica) from the Turonian High Arctic: Climatic and Evolutionary Implications |
title_full |
A Large Ornithurine Bird (Tingmiatornis arctica) from the Turonian High Arctic: Climatic and Evolutionary Implications |
title_fullStr |
A Large Ornithurine Bird (Tingmiatornis arctica) from the Turonian High Arctic: Climatic and Evolutionary Implications |
title_full_unstemmed |
A Large Ornithurine Bird (Tingmiatornis arctica) from the Turonian High Arctic: Climatic and Evolutionary Implications |
title_sort |
large ornithurine bird (tingmiatornis arctica) from the turonian high arctic: climatic and evolutionary implications |
publisher |
Arctic Data Center |
publishDate |
2018 |
url |
https://doi.org/10.18739/A21V5BF6V |
op_coverage |
Expedition Fiord, Axel Heiberg Island, Canada ENVELOPE(-92.1817,-92.1817,79.3917,79.3917) BEGINDATE: 2000-01-01T00:00:00Z ENDDATE: 2000-01-01T00:00:00Z |
long_lat |
ENVELOPE(13.964,13.964,66.424,66.424) ENVELOPE(-91.001,-91.001,79.752,79.752) ENVELOPE(-92.001,-92.001,79.335,79.335) ENVELOPE(-92.1817,-92.1817,79.3917,79.3917) |
geographic |
Arctic Austin Canada Heiberg Axel Heiberg Island Expedition Fiord |
geographic_facet |
Arctic Austin Canada Heiberg Axel Heiberg Island Expedition Fiord |
genre |
Arctic Axel Heiberg Island |
genre_facet |
Arctic Axel Heiberg Island |
op_doi |
https://doi.org/10.18739/A21V5BF6V |
_version_ |
1811920329020276736 |