کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8916460 | 1642097 | 2018 | 21 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
First record of a tarsometatarsus of Tonsala hildegardae (Plotopteridae) and other avian remains from the late Eocene/early Oligocene of Washington State (USA)
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موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
فسیل شناسی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
New bird fossils from the late Eocene/early Oligocene Makah Formation and the Oligocene Pysht Formation on the Olympic Peninsula (Washington State, USA) are described. A partial skeleton from the Pysht Formation includes the first reported tarsometatarsus of Tonsala hildegardae Olson, 1980, a wing-propelled diving bird of the taxon Plotopteridae. It shows that Tonsala had a tarsometatarsus that was morphologically intermediate between that of the late Eocene Phocavis and more derived plotopterids. We introduce the new taxon Tonsalinae nov. subfam. for a clade including all named plotopterids except Phocavis, Plotopterum, and the recently described Stemec. We furthermore describe a partial plotopterid pelvis and a sternum from the Makah Formation. The sternum shows a close resemblance to that of extant Phalacrocoracoidea (cormorants and darters) and may be the earliest North American record of this taxon.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Geobios - Volume 51, Issue 1, February 2018, Pages 51-59
Journal: Geobios - Volume 51, Issue 1, February 2018, Pages 51-59
نویسندگان
Gerald Mayr, James L. Goedert,