Featured Research

from universities, journals, and other organizations

Toothless 'dragon' pterosaurs dominated the Late Cretaceous skies

Date:
August 18, 2014
Source:
Pensoft Publishers
Summary:
A new study provides an exciting insight into the diversity and distribution of pterosaurs from the Azhdarchidae family. Dominating the Late Cretaceous skies this group of toothless flying 'dragons' represent an important link in evolutionary transitions between the pre-historic times and the world as we know it today.

A new study provides an exciting insight into the Late Cretaceous and the diversity and distribution of the toothless 'dragon' pterosaurs from the Azhdarchidae family. The research was published in the open access journal ZooKeys.

The Azhdarchidan pterosaurs derive their name from the Persian word for dragon -- Aždarha. Interestingly, this derived and rather successful group of pterosaurs included some of the largest known flying animals of all times, with a wingspan reaching between 10 and 12 m.

'Dragon' pterosaurs had a worldwide distribution once and were the last of their kind to survive on the planet, until some 60 mya. They dominated the skies during the Late Cretaceus and unlike their predecessors, were characteristically toothless.

"This shift in dominance from toothed to toothless pterodactyloids apparently reflects some fundamental changes in Cretaceous ecosystems, which we still poorly understand," comments the author of the study Dr Alexander Averianov, Zoological Institute of the Russian Academy of Sciences.

Generally fossil record of pterosaurs is patchy and confined mostly to sedimentary deposits known as Konservat-Lagerstätten where exceptional depositional conditions facilitated preservation of fragile pterosaur bones. Unfortunately, such Lagerstätten are very rare for the Late Cretaceous when most of the evolutionary history of Azhdarchidae took place, which makes these exciting creatures exceptionally hard to study.

"Azhdarchidae currently represent a real nightmare for paleontologists: most taxa are known from few fragmentary bones, which often do not overlap between named taxa, the few articulated skeletons are poorly preserved, and some of the best available material has remained undescribed for forty years." explains Dr Averianov about the difficulties studying the group.

Despite these difficulties, the number of localities were azhdarchidan pterosaurs were found is impressive and undoubtedly reflect the important role they played in the Cretaceous ecosystems. These flying giants likely inhabited a large variety of environments, but seem to have been abundant near large lakes and rivers and most common in nearshore marine environments.


Story Source:

The above story is based on materials provided by Pensoft Publishers. The original story is licensed under a Creative Commons License. Note: Materials may be edited for content and length.


Journal Reference:

  1. Alexander Averianov. Review of taxonomy, geographic distribution, and paleoenvironments of Azhdarchidae (Pterosauria). ZooKeys, 2014; 432: 1 DOI: 10.3897/zookeys.432.7913

Cite This Page:

Pensoft Publishers. "Toothless 'dragon' pterosaurs dominated the Late Cretaceous skies." ScienceDaily. ScienceDaily, 18 August 2014. <www.sciencedaily.com/releases/2014/08/140818095031.htm>.
Pensoft Publishers. (2014, August 18). Toothless 'dragon' pterosaurs dominated the Late Cretaceous skies. ScienceDaily. Retrieved October 20, 2014 from www.sciencedaily.com/releases/2014/08/140818095031.htm
Pensoft Publishers. "Toothless 'dragon' pterosaurs dominated the Late Cretaceous skies." ScienceDaily. www.sciencedaily.com/releases/2014/08/140818095031.htm (accessed October 20, 2014).

Share This



More Fossils & Ruins News

Monday, October 20, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

So, Kangaroos Didn't Always Hop

So, Kangaroos Didn't Always Hop

Newsy (Oct. 16, 2014) — Researchers believe an extinct kangaroo species weighed 500 pounds or more and couldn't hop. Video provided by Newsy
Powered by NewsLook.com
1000-Year-Old Viking Treasure Hoard Found in Scotland

1000-Year-Old Viking Treasure Hoard Found in Scotland

Reuters - Light News Video Online (Oct. 14, 2014) — A hoard of Viking artifacts dating back over 1,000 years is discovered by a treasure hunter with a metal detector in Scotland. Elly Park reports. Video provided by Reuters
Powered by NewsLook.com
Early Apple 1 Computer Set for Auction

Early Apple 1 Computer Set for Auction

AP (Oct. 10, 2014) — A vintage Apple computer and a letter by Charles Darwin on the sex life of barnacles are among the unusual pieces of science history that go up for auction in New York later this month. (Oct. 10) Video provided by AP
Powered by NewsLook.com
Archaeologists Find 200,000-Year-Old Pre-Neanderthal Bones

Archaeologists Find 200,000-Year-Old Pre-Neanderthal Bones

Reuters - Light News Video Online (Oct. 9, 2014) — French archaeologists say they have discovered historically significant pre-Neanderthal remains which give insight into the behavior of the extinct human species. Tara Cleary reports. Video provided by Reuters
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
 
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:  

Breaking News:

Strange & Offbeat Stories

 

Plants & Animals

Earth & Climate

Fossils & Ruins

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:  

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile iPhone Android Web
Follow Facebook Twitter Google+
Subscribe RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins