HOME >> BIOLOGY >> NEWS
Feathers on reptile older than dinosaurs, reported in Science

Washington DC - A small, flying reptile older than most dinosaurs may have sported a set of feathers, suggests a study in the 23 June issue of Science. The evidence comes from a fossil approximately 220 million years old, about 75 million years older than the oldest known bird, Archeopteryx.

According to the interpretation by Terry Jones, of Oregon State University, and coauthors, the strong similarities between the fossil feathers and modern day bird feathers suggest an evolutionary link between the two.

Although the exact relationship between the reptile, named Longisquama insignis, and modern birds is uncertain, these findings may pose a challenge to the prevailing theory that birds evolved from dinosaurs. (See the related News article by Erik Stokstad, to be available on 21 June.)

Longisquama was an archosaur, a member of the group of reptiles that gave rise to dinosaurs, crocodiles, and birds. The lizard-like creature was "a little tiny guy, about ten inches long from head to tail," said coauthor John Ruben, also of Oregon State University. Elongated scales adorned Longisquama's long arms, perhaps for use in gliding, and its back.

According to coauthor Larry Martin, of the University of Kansas, the fossil was discovered more than three decades ago in central Asia by a Russian paleontologist who specialized in insects. When the scientist published the first report of the fossil in 1970, he described a row of long narrow appendages down the animal's back, interpreting them as a frill of extremely long scales.

Martin contends, however, that "the slightest breeze would have toppled the animal over" if the structure had been a frill.

A later Russian study revised the picture, describing two parallel rows of supposed scales and proposing that Longisquama may have been able to pivot to form a pair of wing-like structures. Still, the appendages continued to be described as scales.

"The scien
'"/>

Contact: Heather Singmaster
hsingmas@aaas.org
202-326-6414
American Association for the Advancement of Science
22-Jun-2000


Page: 1 2 3

Related biology news :

1. Specialized brain helped ancient reptiles fly and hunt
2. Worlds smallest reptile discovered in Caribbean
3. Ancient reptile is efficient chewer
4. Ancient running reptile was bipedal, say Science researchers
5. Newly found bipedal reptile fossil predates dinosaurs by more than 60 million years
6. Running out of reptiles
7. Medical imaging shows dinosaur heart more like birds or mammals than reptiles
8. Regular physical activity really does boost immune system in older men
9. Origin of West Indian insect eater much older than previously thought
10. Educational program increases some safety behaviors for older drivers
11. Ancient DNA mutations permitted humans to adapt to colder climates, UCI researchers find

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


(Date:11/24/2016)... -- Cercacor today introduced Ember TM Sport Premium ... measure hemoglobin, Oxygen Content, Oxygen Saturation, Perfusion Index, ... approximately 30 seconds. Smaller than a smartphone, using only ... key data about their bodies to help monitor these ... Hemoglobin carries oxygen to muscles. When hemoglobin and ...
(Date:11/19/2016)... Securus Technologies, a leading provider of civil and criminal ... monitoring, announced today that it has offered a challenge ... technology judge determine who has the largest and best ... platform, and the best customer service. "ICSolutions ... we do – which clearly is not the case ...
(Date:11/15/2016)... ROCKVILLE, Md. , Nov. 15, 2016 /PRNewswire/ ... clinical company developing therapeutics focused on the gut ... public offering of 25,000,000 shares of its common ... its common stock at a price to the ... gross proceeds to Synthetic Biologics from the offering, ...
Breaking Biology News(10 mins):
(Date:12/5/2016)... 2016 Research and Markets has announced ... Markets and Companies" to their offering. ... , , ... various -omics technologies such as proteomics and metabolomics. Molecular diagnostics technologies ... also based on biomarker. Currently the most important applications ...
(Date:12/5/2016)... 2016 According to the ... Products (Consumable, Instruments, Automated Cell Expansion System), Cells ... Cell Research, Cancer, and Cell-Based Research), End-users (Biopharmaceutical ... Global Revenue, Trends, Growth, Share, Size and Forecast ... global cell expansion market is expected to reach ...
(Date:12/5/2016)... RAPIDS, Mich. , Dec. 5, 2016 NxGen MDx announced ... "By bringing the test in house, we,ve been able to improve customer ... down for patients," says Alan Mack , CEO of NxGen MDx. ... , , ... in test volume has led to more job opportunities at the Grand ...
(Date:12/5/2016)... YORK , December 5, 2016 ... player worldwide, with almost $108 billion of revenue and ... $170 billion were spent on global biopharmaceuticals, and this ... This morning, Stock-Callers.com has lined up these four equities ... ), ACADIA Pharmaceuticals Inc. (NASDAQ: ACAD ), ...
Breaking Biology Technology:
Cached News: