Английская Википедия:Dalianraptor

Материал из Онлайн справочника
Перейти к навигацииПерейти к поиску

Шаблон:Short description Шаблон:Speciesbox

Dalianraptor (meaning "Dalian thief") is a dubious genus of prehistoric bird that lived in China about 120 million years ago, during the Early Cretaceous Period that was found in the Jiufotang Formation of China.[1] It was initially believed to have been a possible dromaeosaurid before it was described in 2005.[2]

Discovery and naming

The holotype, D2139, was discovered sometime before the 2000s, when Matthew Martyniuk saw a photograph of the holotype, which was then labelled as an undescribed possible dromaeosaurid.[2] The type, and only known species, D. cuhe, was named and described by Gao & Liu in 2005.[1]

More recently, it is being suspected that the specimen is a chimera forged for the fossil trade,[3] namely a Jeholornis with the arms exchanged by those of an unnamed flightless theropod.[4][2] If the holotype is not a chimera, then the placement of Dalianraptor within Aves is still uncertain.[4]

Description

Dalianraptor is very similar to the contemporary avialian Jeholornis, though it has a longer digit I (thumb-equivalent) and shorter forelimbs,[5] which suggests it may have been flightless. It also reached about Шаблон:Convert in length.

References

Шаблон:Reflist

Шаблон:Taxonbar


Шаблон:Paleo-bird-stub

  1. 1,0 1,1 Gao and Liu (2005). "A new avian taxon from Lower Cretaceous Jiufotang Formation of western Liaoning." Global Geology, 24(4), 313-316.
  2. 2,0 2,1 2,2 Шаблон:Cite web
  3. O'Connor, Sun, Xu, Wang and Zhou (2012). "A new species of Jeholornis with complete caudal integument." Historical Biology, 24(1): 29-41.
  4. 4,0 4,1 Шаблон:Cite journal
  5. Шаблон:Cite journal