著者

Olson Storrs L. 長谷川 善和

出版者

国立科学博物館

雑誌

Bulletin of the National Science Museum. Series C, Geology & paleontology (ISSN:0385244X)

巻号頁・発行日

vol.11, no.3, pp.137-140, 1985-09

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A femur of early middle Miocene age (Hemingfordian correlative) of Honshu, Japan, that had previously been referred to the Phalacrocoracidae is here reidentified as that of a member of the Plotopteridae, an extinct family of diving birds belonging to the order Pelecaniformes. Because of the small size of the specimen it is assigned to the genus Plotopterum, heretofore known only from lower Miocene rocks of California, and it provides the youngest known occurrence of the family.