Crosnoornis is an extinct genus of suboscine bird from the Early Oligocene of Poland. It contains a single species, C. nargizia.Bochenski, Z.M., Tomek, T., Bujoczek, M. (2021) A new passeriform (Aves: Passeriformes) from the early Oligocene of Poland sheds light on the beginnings of Suboscines. J Ornithol. https://doi.org/10.1007/s10336-021-01858-0 A 2024 study found strong support for it and the related Wieslochia being members of the suborder Tyranni, either as stem group or crown group members of the Eurylaimides.
See also Jamninkaornis – another extinct member of the Tyranni
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