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:
TAG: New Sickle Clawed Fossil From Madagascar Links Birds And Dinosaurs

(Date:3/31/2015)... -- Elephant Talk Communications Corp. (NYSE MKT: ETAK) ("Elephant Talk" ... Network Architecture (ET Software DNA® 2.0) platforms and cyber ... million for the year ended December 31, 2014 as ... ended December 31, 2013. At the ... multi-year transition away from its legacy landline business to ...
(Date:3/26/2015)... -- The Granite Club, Canada,s ... today announced it has implemented a state-of-the-art access and ... members and staff, while restricting access to authorized users ... FST,s IMID Access system because it has the perfect ... staff, in addition to unparalleled security," said James ...
(Date:3/24/2015)... NexID Biometrics LLC, whose spoof-mitigation technology boosts protection ... beginning of shipments of version 2.0 of its industry ... in Potsdam, N.Y. , is making ... here today at the Walter E. Washington Convention Center. ... boosts the accuracy rate range to 96.5 to 99.5 ...
Breaking Biology News(10 mins):Elephant Talk Reports 2014 Fourth Quarter and Year End Financial Results 2Elephant Talk Reports 2014 Fourth Quarter and Year End Financial Results 3Elephant Talk Reports 2014 Fourth Quarter and Year End Financial Results 4Elephant Talk Reports 2014 Fourth Quarter and Year End Financial Results 5Elephant Talk Reports 2014 Fourth Quarter and Year End Financial Results 6Granite Club First Private Club in North America to Implement FST Biometrics Secure Access Solution, as Part of Multi-million Dollar Expansion 2NexID Begins Shipments Of Version 2.0 Fake-Finger-Detection Solution 2
(Date:4/21/2015)... PRC Clinical, a Clinical Trial ... ACRP 2015 Global Conference and Exhibition on April 25-28, ... Clinical Research Professionals (ACRP) Global Conference and Exhibition is ... the conduct of clinical trials. ACRP supports clinical research ... industry certifications. , The ACRP 2015 Global Conference ...
(Date:4/21/2015)... York (PRWEB) April 21, 2015 Progyny, ... Fertility Authority, LLC, announced that it has secured additional ... (KPCB), TPG Biotech, SR One and Merck Serono Ventures. ... to provide patients the best fertility outcomes by aligning ... the largest online marketplace for families seeking fertility solutions ...
(Date:4/21/2015)... April 21, 2015 A leading manufacturer ... is slated to discuss its custom fabrication services today ... reimagined website, which launched just prior to the INTERPHEX ... (April 21, 22 and 23) at the Javits Center ... of the world’s largest and most innovative pharmaceutical and ...
(Date:4/21/2015)... MA (PRWEB) April 21, 2015 ... in the life sciences, consumer products and food ... challenges, and the Alliance for Clinical Research Excellence ... global system for conducting clinical research, have partnered ... sector. , YourEncore brings to ACRES ...
Breaking Biology Technology:PRC Clinical Sponsors The ACRP 2015 Global Conference And Meets Biotech Companies in the Salt Lake City Area. 2Announcing Progyny: Combining Best-in-Class Clinical Solutions with Consumer Expertise 2HOLLOWAY AMERICA to Reveal Newly Designed Responsive Website at INTERPHEX 2015 Today 2HOLLOWAY AMERICA to Reveal Newly Designed Responsive Website at INTERPHEX 2015 Today 3YourEncore and ACRES Partner to Drive Innovation in Clinical Research 2YourEncore and ACRES Partner to Drive Innovation in Clinical Research 3
Cached News: