摘要：The leg bones of a small passeriform bird are described from the early Oligocene (29 Mya) of Poland. The specimen is the earliest complete passerine leg with elements in articulation described so far, and increases the known diversity of the very scanty records of the oldest European passeriforms. In general proportions the leg bones resemble those of Luscinia svecica and other species that live in shrubs. Assignment to a family within the passerines is not possible because of the incompleteness of the fossil.
