Английская Википедия:Dabeigou Formation

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Шаблон:Infobox rockunit The Dabeigou Formation (Шаблон:Zh) is a palaeontological formation located in Hebei, China.[1] It dates from the mid Valanginian to Hauterivian age of the Cretaceous period, approximately 135 to 130 Ma.[2]

Fossil content

Fossils include the confuciusornithiform bird Eoconfuciusornis.[3] As of 2016Шаблон:Citation needed this is the oldest bird with a toothless beak known, but it belongs to a very ancestral avian lineage not closely related to living birds.

Birds
Amphibians
Insects

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See also

References

Шаблон:Reflist

Bibliography

Further reading

  1. Dabeigou Formation at Fossilworks.org
  2. Qin et al., 2018
  3. Zhang et al., 2008
  4. Wang & Stidham, 2018
  5. Rong, 2018
  6. 6,0 6,1 6,2 6,3 6,4 6,5 Kopylov & Zhang, 2015
  7. 7,0 7,1 7,2 7,3 7,4 Hong, 1984
  8. 8,0 8,1 8,2 Zhang et al., 2009
  9. 9,0 9,1 9,2 Ren, 1995
  10. 10,0 10,1 10,2 10,3 10,4 Zhang, 1986