HOME >> BIOLOGY >> NEWS
New Sickle-Clawed Fossil From Madagascar Links Birds And Dinosaurs

A new raven-sized fossil bird, showing clear evidence of the close relationship between theropod dinosaurs and birds, has been discovered on the island of Madagascar by scientists working under a National Science Foundation (NSF) grant. This discovery was announced by a team of researchers -- led by paleontologist/anatomist Catherine Forster of the State University of New York (SUNY) at Stony Brook -- in this week's issue of the journal Science.

"This discovery is a wonderful example of how the fossil record provides the basic data for formulating, testing, and revising ideas about life through time," says Chris Maples, director of NSF's geology and paleontology program, which funded the research.

The fossil bird is 65 to 70 million years old and dates from the Late Cretaceous period. It was discovered in 1995 by an international team of paleontologists led by researcher David Krause, also of SUNY-Stony Brook. The scientists have named the new discovery Rahona ostromi, meaning "Ostrom's menace from the clouds." Scientists Scott Sampson (New York College of Osteopathic Medicine) and Luis Chiappe (American Museum of Natural History in New York) are also co-authors of the Science paper.

The forearm bone of Rahona is long and shows evidence of well-developed feathers, indicating it was a capable flyer. But unlike most birds, Rahona also had a long, bony tail and sported a large, sickle-like killing claw at the end of a thick second toe on the hind foot. This unique toe and claw is identical to the one carried by a group of fast, predaceous theropod dinosaurs called "maniraptorans." It is these maniraptoran dinosaurs (a group that includes Velociraptor and Deinonychus), that many, but not all, scientists believe gave rise to birds. "This new fossil is one of the strongest last nails in the coffin of those who doubt that dinosaurs had anything to
'"/>

Contact: Cheryl Dybas
cdybas@nsf.gov
703-306-1070
National Science Foundation
17-Mar-1998


Page: 1 2 3

Related biology news :

1. Fossil genes reveal how life sheds form and function
2. Fossils reveal direct link between global warming and genetic diversity in wildlife
3. Methane and mini-horses: Fossils reveal effects of global warming
4. Fossil teeth reveal recent origin of human growth pattern
5. Fossil teeth of extinct North American rhinos reveal an aquatic lifestyle similar to modern hippos
6. Fossil plants ties to ancient carbon redefined
7. Fossil mayflies can be used to weigh ancient atmospheres
8. Fossilized Emu Eggshells Give Clues To 65,000 Years Of Vegetation And Climate Changes In Australia
9. Scientists Use Fossilized Emu Eggshells To Discern Changes In Vegetation, Provide Additional Evidence Of Human Impact On Australian Landscape
10. Fossil Footprints Show Foot-Movement Similarity In Dinosaurs And Birds
11. A Missing Link Fossil Adds Foliage To The Early Human Ancestor Family Tree

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:8/15/2017)... Va. , Aug. 15 2017   ivWatch LLC , ... of intravenous (IV) therapy, today announced receipt of its ISO 13485 ... developed by the International Organization for Standardization (ISO®). ... ivWatch Model 400 Continuous Monitoring device for the ... "This is ...
(Date:6/14/2017)... -- IBM (NYSE: IBM ) is introducing several innovative partner ... developing collaboration between startups and global businesses, taking place in ... event, nine startups will showcase the solutions they have built ... France is one of ... 30 percent increase in the number of startups created between ...
(Date:5/6/2017)... -- RAM Group , Singaporean based technology ... biometric authentication based on a novel  quantum-state ... perform biometric authentication. These new sensors are based on a ... Group and its partners. This sensor will have widespread ... security. Ram Group is a next generation sensor ...
Breaking Biology News(10 mins):
(Date:8/21/2017)... ... August 21, 2017 , ... Baltimore biotech ... security firm, to bring its proprietary CANARY pathogen detection technology and high throughput ... Chinese firm has purchased an undisclosed number of PathSensors’ Zephyr pathogen detection instruments ...
(Date:8/21/2017)... (PRWEB) , ... August 21, 2017 , ... Today Aether ... a project, funded by a Bill and Melinda Gates Foundation grant, to ... Bill & Melinda Gates Foundation, also known as the Gates Foundation, is said to ...
(Date:8/17/2017)... ... 17, 2017 , ... CNA Finance Chief Research Analyst, Kenny ... update on Aytu Bioscience and cited promising increases in the prescription rates for ... for Natesto® have more than doubled since March of this year and on ...
(Date:8/16/2017)... ... August 16, 2017 , ... ... Electrospinning and Electrospraying line of nanofiber and nanoparticle fabrication ... for the lab to fully automated pilot plants and equipment for industrial ...
Breaking Biology Technology:
Cached News: