Chupkaornis

<i>Chupkaornis</i>

Chupkaornis

Extinct genus of birds

Chupkaornis is a genus of prehistoric flightless birds from the Late Cretaceous (Coniacian-Santonian) Kashima Formation of Hokkaido, Japan.

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Description

Diagnostic traits of Chupkaornis include a finger-like projected tibiofibular crest of femur, deep, emarginated lateral excavation with a sharply defined edge of the ventral margin of the thoracic vertebrae, and the heterocoelous articular surface of the thoracic vertebrae.[1]

Phylogeny

Chupkaornis is recovered by Tanaka et al. (2017) as more derived than the Cenomanian-age form Pasquiaornis, but less advanced than Brodavis and Baptornis.[1]

References

  1. [1]
    Tomonori Tanaka, Yoshitsugu Kobayashi, Ken'ichi Kurihara, Anthony R. Fiorillo and Manabu Kano. 2017. The Oldest Asian Hesperornithiform from the Upper Cretaceous of Japan, and the Phylogenetic Reassessment of Hesperornithiformes. Journal of Systematic Palaeontology. doi:10.1080/14772019.2017.1341960


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This article uses material from the Wikipedia article Chupkaornis, and is written by contributors. Text is available under a CC BY-SA 4.0 International License; additional terms may apply. Images, videos and audio are available under their respective licenses.