Posted 27 May 2010
95 million year old jaw bones from Sahara help scientists identify new pterodactyl
With the help of ancient fossils unearthed in the Sahara desert, scientists have identified a new type of pterosaur (giant flying reptile or pterodactyl) that existed about 95 million years ago.
According to the findings published in the scientific journal PLoS ONE, the scientists consider the newly identified pterosaur to be the earliest example of its kind.
Unearthed in three separate pieces, the jaw bone has a total length of 344mm (13.5 inches). Each piece is well preserved, uncrushed, and unlike most other pterosaur fossils, retains its original three dimension shape.
“This pterosaur is distinguished from all others by its lance-shaped lower jaw which had no teeth and looked rather like the beak of a heron,” says Nizar Ibrahim, a PhD research scholar from the UCD School of Medicine and Medical Science, who led the expedition and is the lead author on the scientific paper.
“During the excavation, we also discovered a partial neck vertebra that probably belonged to the same animal, inferring a wing span of about six metres.
Nizar Ibrahim, PhD research scholar at the School of Medicine and Medical Science, University College Dublin who led the expedition, pictured with the jaw bone fragments of Alanqa saharica
(Click to enlarge)
The scientists have named the new pterosaur Alanqa saharica from the Arabic word ‘Al Anqa’ meaning Phoenix, a mythological flying creature that dies in a fire and is reborn from the ashes of that fire.
On the same expedition, and in the same region as where the fossils of Alanqa saharica were uncovered, the scientists also discovered fossils of two other previously identified types of pterosaur. This suggests that several types of pterosaurs lived alongside one another in the same region at the time, each probably specialising in a different ecological niche.
Nizar Ibrahim, PhD research scholar at the School of Medicine and Medical Science, University College Dublin, who led the expedition, unearthing the ancient jaw bone fragments from a site in the Sahara
(Click to enlarge)
“When this pterosaur was alive, the Sahara desert was a river bed basin lush with tropical plant and animal life,” explains Ibrahim. “This means there were lots of opportunities for different pterosaurs to co-exist, and perhaps feeding on quite different kinds of prey.”
Pterosaur bones are seldom preserved in the fossil record because they were light and flimsy in order to be optimised for flight. Until now there have been few significant pterosaur fossil finds in Africa.
Nizar Ibrahim, is an Ad Astra scholar at the UCD School of Medicine and Medical Science, University College Dublin
The international team of scientists involved in the discovery included:
- Nizar Ibrahim, School of Medicine and Medical Science, University College Dublin, Dublin, Ireland
- David M. Unwin, School of Museum Studies, University of Leicester, United Kingdom
- David M Martill, School of Earth and Environmental Sciences, University of Portsmouth, United Kingdom
- Lahssen Baidder and Samir Zouhri, Laboratoire de Géosciences, Université Hassan II, Casablanca, Morocco
PLoS ONE
PLoS ONE is an international, peer-reviewed, open-access, online publication. It is published by the Public Library of Science (PLoS), a non-profit organization of scientists and physicians committed to making the world's scientific and medical literature freely available as a public resource.
The full scientific article was published online at PLoS ONE on on 26 May 2010.
(Produced by UCD University Relations)
