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Temporal range: 125 Ma
Scientific classification edit
Kingdom: Animalia
Phylum: Chordata
Clade: Enantiornithes
Family: Avisauridae
Genus: Mystiornis
Kurochkin et al., 2011
M. cyrili
Binomial name
Mystiornis cyrili
Kurochkin et al., 2011

Mystiornis is an extinct genus of bird which existed in what is now western Siberia, Russia during the early Cretaceous period (Barremian/Aptian age). It is known from an isolated metatarsus found in the Shestakovo-1 locality of southern Western Siberia. It was named by Evgeny N. Kurochkin, Nikita V. Zelenkov, Alexandr O. Averianov and Sergei V. Leshchinskiy in 2011, and the type species is Mystiornis cyrili.[1] While originally described as a very primitive bird only distantly related to well-known groups, it is more likely to be an enantiornithine, specifically an avisaurid.[2]


  1. ^ Evgeny N. Kurochkin; Nikita V. Zelenkov; Alexandr O. Averianov; Sergei V. Leshchinskiy (2011). "A new taxon of birds (Aves) from the Early Cretaceous of Western Siberia, Russia". Journal of Systematic Palaeontology. 9 (1): 109–117. doi:10.1080/14772019.2010.522202.CS1 maint: uses authors parameter (link)
  2. ^ Holtz, Thomas R. Jr. (2012) Dinosaurs: The Most Complete, Up-to-Date Encyclopedia for Dinosaur Lovers of All Ages, Winter 2011 Appendix.