New Pleistocene bird fossils in Taiwan reveal unexpected seabirds in East Asia
The island of Taiwan, with its diverse microclimates and key position on the East Asian-Australasian Flyway, attracts numerous bird enthusiasts due to its diverse avian fauna. Nevertheless, due to the scarcity of fossil records, there is a significant knowledge gap between modern and ancient avifa...
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| Format: | Article |
| Language: | English |
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Institute of Paleobiology PAS
2023-12-01
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| Series: | Acta Palaeontologica Polonica |
| Subjects: | |
| Online Access: | https://www.app.pan.pl/archive/published/app68/app010912023.pdf |
| _version_ | 1827373038965882880 |
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| author | SIAO-MAN WU TREVOR H. WORTHY CHIH-KAI CHUANG CHIEN-HSIANG LIN |
| author_facet | SIAO-MAN WU TREVOR H. WORTHY CHIH-KAI CHUANG CHIEN-HSIANG LIN |
| author_sort | SIAO-MAN WU |
| collection | DOAJ |
| description | The island of Taiwan, with its diverse microclimates and key position on the East Asian-Australasian Flyway, attracts
numerous bird enthusiasts due to its diverse avian fauna. Nevertheless, due to the scarcity of fossil records, there is a
significant knowledge gap between modern and ancient avifaunas in Taiwan. Currently, there is only a single described
Pleistocene fossil; it is attributed to Phasianidae. To address this gap, this study describes two new bird fossils, a left
humerus and a left tibiotarsus, and discusses them in detail herein. The fossils were collected from the Liuchungchi
Formation (Early Pleistocene, 1.95–1.35 Ma) in Niubu, Chiayi, southwestern Taiwan, which represents a neritic environment.
The fossils are identified as from species of Gaviidae (loons), with the humerus belonging to an undetermined
species of Gavia and the tibiotarsus to Gavia stellata. Loons are seabirds that are primarily distributed in high- and
middle latitudes of the Northern Hemisphere. In addition, these birds are extremely rare in modern Taiwan: records are
scarce and most are limited to northern and northeastern Taiwan since the 1860s, indicating that the modern Gavia birds
only occasionally visit Taiwan. All known Pleistocene fossils of species of Gavia from the northern West Pacific come
from Japan. The Taiwan fossils of Gavia provide valuable bird evolutionary and paleobiogeographic information for the
subtropical West Pacific and may imply the presence of a distinct avifauna in the region during the Early Pleistocene. |
| first_indexed | 2024-03-08T11:09:49Z |
| format | Article |
| id | doaj.art-dc930ed06d524366873b5de5d2abcca8 |
| institution | Directory Open Access Journal |
| issn | 0567-7920 1732-2421 |
| language | English |
| last_indexed | 2024-03-08T11:09:49Z |
| publishDate | 2023-12-01 |
| publisher | Institute of Paleobiology PAS |
| record_format | Article |
| series | Acta Palaeontologica Polonica |
| spelling | doaj.art-dc930ed06d524366873b5de5d2abcca82024-01-26T13:06:33ZengInstitute of Paleobiology PASActa Palaeontologica Polonica0567-79201732-24212023-12-0168461362410.4202/app.01091.2023New Pleistocene bird fossils in Taiwan reveal unexpected seabirds in East AsiaSIAO-MAN WU0https://orcid.org/0009-0004-3702-1996TREVOR H. WORTHY1https://orcid.org/0000-0003-4897-3111CHIH-KAI CHUANG2https://orcid.org/0000-0001-7396-0334CHIEN-HSIANG LIN3https://orcid.org/0000-0002-2882-0874Biodiversity Research Center, Academia Sinica, Taipei, 11529, Taiwan.Palaeontology Group, College of Science and Engineering, Flinders University, Adelaide, 5001, Australia.Biodiversity Research Center, Academia Sinica, Taipei, 11529, Taiwan.Biodiversity Research Center, Academia Sinica, Taipei, 11529, Taiwan.The island of Taiwan, with its diverse microclimates and key position on the East Asian-Australasian Flyway, attracts numerous bird enthusiasts due to its diverse avian fauna. Nevertheless, due to the scarcity of fossil records, there is a significant knowledge gap between modern and ancient avifaunas in Taiwan. Currently, there is only a single described Pleistocene fossil; it is attributed to Phasianidae. To address this gap, this study describes two new bird fossils, a left humerus and a left tibiotarsus, and discusses them in detail herein. The fossils were collected from the Liuchungchi Formation (Early Pleistocene, 1.95–1.35 Ma) in Niubu, Chiayi, southwestern Taiwan, which represents a neritic environment. The fossils are identified as from species of Gaviidae (loons), with the humerus belonging to an undetermined species of Gavia and the tibiotarsus to Gavia stellata. Loons are seabirds that are primarily distributed in high- and middle latitudes of the Northern Hemisphere. In addition, these birds are extremely rare in modern Taiwan: records are scarce and most are limited to northern and northeastern Taiwan since the 1860s, indicating that the modern Gavia birds only occasionally visit Taiwan. All known Pleistocene fossils of species of Gavia from the northern West Pacific come from Japan. The Taiwan fossils of Gavia provide valuable bird evolutionary and paleobiogeographic information for the subtropical West Pacific and may imply the presence of a distinct avifauna in the region during the Early Pleistocene.https://www.app.pan.pl/archive/published/app68/app010912023.pdfavesgavialoonseabirdearly pleistocenetaiwan |
| spellingShingle | SIAO-MAN WU TREVOR H. WORTHY CHIH-KAI CHUANG CHIEN-HSIANG LIN New Pleistocene bird fossils in Taiwan reveal unexpected seabirds in East Asia Acta Palaeontologica Polonica aves gavia loon seabird early pleistocene taiwan |
| title | New Pleistocene bird fossils in Taiwan reveal unexpected seabirds in East Asia |
| title_full | New Pleistocene bird fossils in Taiwan reveal unexpected seabirds in East Asia |
| title_fullStr | New Pleistocene bird fossils in Taiwan reveal unexpected seabirds in East Asia |
| title_full_unstemmed | New Pleistocene bird fossils in Taiwan reveal unexpected seabirds in East Asia |
| title_short | New Pleistocene bird fossils in Taiwan reveal unexpected seabirds in East Asia |
| title_sort | new pleistocene bird fossils in taiwan reveal unexpected seabirds in east asia |
| topic | aves gavia loon seabird early pleistocene taiwan |
| url | https://www.app.pan.pl/archive/published/app68/app010912023.pdf |
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