Elsornis

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Elsornis
Temporal range: Late Cretaceous, 80  Ma
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Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Clade: Dinosauria
Clade: Saurischia
Clade: Theropoda
Clade: Avialae
Clade: Enantiornithes
Genus: Elsornis
Chiappe et al., 2007
Species:
E. keni
Binomial name
Elsornis keni
Chiappe et al., 2007

Elsornis is a genus of enantiornithine bird. Only one species is known, Elsornis keni. It lived during the Late Cretaceous. It is known from a partially articulated fossil skeleton found in the Gobi Desert in Mongolia.

The holotype fossil is given catalog number MPD - b 100/201. It is in the collection of the Mongolian Palaeontological Center. The fossil was collected at Togrogiin Shiree, South Gobi Aimak, Mongolia; Djadokhta Formation, Late Cretaceous, Campanian.

The fossil is extremely well preserved in three dimensions. It preserves a pneumatized Furcula, which was a character previously unknown in enantiornithines. Chiappe et al. (2007) conclude from the proportions of Elsornis ' pectoral skeleton that it was flightless or nearly so. [1] It may have glided like an Archaeopteryx, climbing in trees so hunt for its prey on the ground. However, if this is not the case, it may have hunted on the ground, snatching up small vertebrates and bugs. Like the other members of Avisauridae, it probably had small non-serrated teeth it used for hunting, and possibly scavenged the carcasses left by other, more formidable carnivores.

A study by Atterholt et al. in 2018 places Elsornis in the family Avisauridae. [2]

Etymology

The Genus name Elsornis is derived from the Mongolian word "Els", meaning "sand", and "ornis", the Greek word for "bird". The species name "keni" honors Mr. Ken Hayashibara.

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References

  1. Chiappe, Luis M.; Suzuki, Shigeru; Dyke, Gareth J.; Watabe, Mahito; Tsogtbaatar, K.; Barsbold, Rinchen (2007). "A new Enantiornithine bird from the Late Cretaceous of the Gobi desert". Journal of Systematic Palaeontology. 5 (2): 193–208. Bibcode:2007JSPal...5..193C. doi:10.1017/S1477201906001969. S2CID   85391743.
  2. Atterholt, Jessie; Hutchison, J. Howard; O’Connor, Jingmai K. (2018-11-13). "The most complete enantiornithine from North America and a phylogenetic analysis of the Avisauridae". PeerJ. 6: e5910. doi: 10.7717/peerj.5910 . ISSN   2167-8359. PMC   6238772 . PMID   30479894.