World Library  
Flag as Inappropriate
Email this Article

Chaoyangopterus zhangi

Article Id: WHEBN0012257951
Reproduction Date:

Title: Chaoyangopterus zhangi  
Author: World Heritage Encyclopedia
Language: English
Subject: Aptian, Phylogeny of pterosaurs, Tapejaridae
Collection:
Publisher: World Heritage Encyclopedia
Publication
Date:
 

Chaoyangopterus zhangi

Chaoyangopterus is a genus of azhdarchoid pterodactyloid pterosaur known from a partial skeleton found in Liaoning, China. It was found in rocks of the Aptian-age Lower Cretaceous Jiufotang Formation of Dapingfang, Chaoyang.

The genus was named and described in 2003 by Wang Xiao-Lin and Zhou Zhong-He. The type species is Chaoyangopterus zhangi. The genus name is derived from Chaoyang and a Latinised Greek pteron, "wing". The specific name honours journalist Zhang Wanlian for his efforts in protecting fossil sites.

The genus is based on holotype IVPP V13397, which includes the front of the skull, the lower jaws, the neck vertebrae, the shoulder and pelvic girdles, and the limbs. The skull is about 270 millimeters long (10.6 inches) and toothless, and its wingspan is estimated to have been around 1.85 meters (6.07 feet). Wang and Zhou concluded that it compared most closely to Nyctosaurus and classified it as a nyctosaurid, although they found that its shin was proportionally longer compared to the femur and humerus in Chaoyangopterus, that their animal had relatively shorter wings and longer legs than Nyctosaurus, and that it still had four fingers.[1]

The classification of Chaoyangopterus has since become unsettled, with subsequent reviewers disagreeing with the nyctosaurid assessment. David Unwin, in a popular work, included it without comment with the tapejarid family of azhdarchoid pterosaurs,[2] known for their large head crests. A detailed phylogenetic analysis of Liaoning pterosaurs published by Junchang Lü and Qiang Ji in 2006 found it instead to be a basal azhdarchoid of no particular familial affiliation.[3] However, subsequent analysis by Lu and Unwin found that within the Azhdarchoidea it formed a clade with several other forms such as Jidapterus and Shenzhoupterus, which they named Chaoyangopteridae.[4]

Wang however, in 2006 stated that Chaoyangopterus was a member of the Pteranodontidae and that Jidapterus, Eoazhdarcho and Eopteranodon are subjective junior synonyms of the former.[5]

Paleobiology

Chaoyangopterus is known to have been a toothless pterosaur and was assumed by Wang to have been a piscivore or fish-eater, but other relevant details of its paleobiology will have to await a more detailed description. Chaoyangopterids in general are now thought to have been similar to azhdarchid pterosaurs, implying that they were probably crane-like terrestrial omnivores and opportunistic carnivores.[6]

References

External links

  • in The Pterosauria
This article was sourced from Creative Commons Attribution-ShareAlike License; additional terms may apply. World Heritage Encyclopedia content is assembled from numerous content providers, Open Access Publishing, and in compliance with The Fair Access to Science and Technology Research Act (FASTR), Wikimedia Foundation, Inc., Public Library of Science, The Encyclopedia of Life, Open Book Publishers (OBP), PubMed, U.S. National Library of Medicine, National Center for Biotechnology Information, U.S. National Library of Medicine, National Institutes of Health (NIH), U.S. Department of Health & Human Services, and USA.gov, which sources content from all federal, state, local, tribal, and territorial government publication portals (.gov, .mil, .edu). Funding for USA.gov and content contributors is made possible from the U.S. Congress, E-Government Act of 2002.
 
Crowd sourced content that is contributed to World Heritage Encyclopedia is peer reviewed and edited by our editorial staff to ensure quality scholarly research articles.
 
By using this site, you agree to the Terms of Use and Privacy Policy. World Heritage Encyclopedia™ is a registered trademark of the World Public Library Association, a non-profit organization.
 



Copyright © World Library Foundation. All rights reserved. eBooks from World eBook Library are sponsored by the World Library Foundation,
a 501c(4) Member's Support Non-Profit Organization, and is NOT affiliated with any governmental agency or department.