A Large Marine Bird (Aves: Procellariiformes) from the Eocene of Western Siberia

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发表日期：

2024年8月11日

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N. V. Zelenkov,
M. P. Maslintsyna,
T. P. Malyshkina,
A. A. Maslennikov,
E. V. Syromyatnikova,
D. O. Gimranov

摘要

Abstract

The article describes the first find of a bird from the Paleogene of Siberia. A fragment of tibiotarsus from the Eocene Tavda Formation of the Tyumen Region (Western Siberia) is assigned to Procellariiformes. The bird is morphologically closer to Procellariidae, but comparable in size to albatrosses (Diomedeidae) and is assumed to represent the stem members of the family. The find indicated for the first time that either stem albatrosses or similar large Procellariiformes could have had a worldwide distribution as early as the Eocene.