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:11/17/2016)... LONDON , Nov. 17, 2016 Global Market ... and Public Biobanks (Disease-Based Banks, Population-Based Banks and Academics) market ... Geographical analysis for Private Biobanks shows the highest Compounded Annual ... Asia-Pacific region during the analysis period 2014-2020. ... a CAGR of 9.95% followed by Europe ...
(Date:11/14/2016)... Nov. 14, 2016  xG Technology, Inc. ("xG" or ... critical wireless communications for use in challenging operating environments, ... 30, 2016. Management will hold a conference call to ... p.m. Eastern Time (details below). Key Recent ... $16 million binding agreement to acquire Vislink Communication Systems. ...
(Date:6/22/2016)... , June 22, 2016 On Monday, ... call to industry to share solutions for the Biometric ... U.S. Customs and Border Protection (CBP), explains that CBP ... are departing the United States , ... and to defeat imposters. Logo - ...
Breaking Biology News(10 mins):
(Date:11/30/2016)... , Nov. 30, 2016  GenomOncology today announced the appointment ... of Medical Affairs.  Dr. Coleman will oversee ... company,s proprietary knowledge-enabled platform. The GenomOncology software suite empowers molecular ... sequencing data and clinical decision support, from quality control through ... , , ...
(Date:11/30/2016)... -- The Allen Institute for Cell Science has released ... collection of gene edited, fluorescently tagged human induced ... with unprecedented clarity. Distributed through the Coriell Institute ... crucial first step toward visualizing the dynamic organization ... cells healthy and what goes wrong in disease. ...
(Date:11/30/2016)... BILLERICA, Massachusetts , 30. November 2016 ... und Technologieunternehmen, hat heute die Unterzeichnung einer ... gegeben. Diesen zufolge wird Evotec AG Screeningleistungen ... und shRNA-Bibliotheken bereitstellen. Der Zugriff auf diese ... Bereich Screening eröffnet einen schnelleren Weg zur ...
(Date:11/30/2016)... Woburn, MA (PRWEB) , ... November 30, 2016 ... ... broadband light sources for advanced technology applications, introduces the 5th generation, ultra-bright, Laser-Driven ... the highly successful Laser-Driven Light Source (LDLS™) technology, the EQ-77 offers higher radiance ...
Breaking Biology Technology:
Cached News: