Fossil Science
Recent News |  Archives |  Tags |  About |  Newsletter |  Submit News |  Links |  Subscribe to FossilScience.com RSS Feed Subscribe


More Articles
Fear of the cuckoo mafiaFear of the cuckoo mafia

Our brains are hardwired for languageOur brains are hardwired for language

SpaceX's Dragon headed to space station to create astronaut farmersSpaceX's Dragon headed to space station to create astronaut farmers

Turning harmful gas into valuable fuels, chemicalsTurning harmful gas into valuable fuels, chemicals

Scientists successfully use krypton to accurately date ancient Antarctic iceScientists successfully use krypton to accurately date ancient Antarctic ice

First size-based chromatography technique for the study of liviFirst size-based chromatography technique for the study of livi

Superconducting qubit array points the way to quantum computersSuperconducting qubit array points the way to quantum computers

Mantis shrimp stronger than airplanesMantis shrimp stronger than airplanes

Piezotronics and piezo-phototronics leading to unprecedented active electronics and optoelectronicsPiezotronics and piezo-phototronics leading to unprecedented active electronics and optoelectronics

Nanocrystalline cellulose modified into an efficient viral inhibitorNanocrystalline cellulose modified into an efficient viral inhibitor

Scientists grow cartilage to reconstruct noseScientists grow cartilage to reconstruct nose

The story of animal domestication retoldThe story of animal domestication retold

Diffeomorphometry and geodesic positioning systems for human anatomyDiffeomorphometry and geodesic positioning systems for human anatomy

Deadly human pathogen Cryptococcus fully sequencedDeadly human pathogen Cryptococcus fully sequenced

Appearance of night-shining clouds has increasedAppearance of night-shining clouds has increased

Simplicity is key to co-operative robotsSimplicity is key to co-operative robots

Sperm meets egg: Protein essential for fertilization discoveredSperm meets egg: Protein essential for fertilization discovered

Satellite shows high productivity from US corn beltSatellite shows high productivity from US corn belt

The surprising consequences of banning chocolate milkThe surprising consequences of banning chocolate milk

Babies prefer fairness -- but only if it benefits them -- in choosing a playmateBabies prefer fairness -- but only if it benefits them -- in choosing a playmate

A new twist makes for better steel, researchers findA new twist makes for better steel, researchers find

Renewable energy market share climbs despite 2013 dip in investmentsRenewable energy market share climbs despite 2013 dip in investments

Study finds gaming augments players' social livesStudy finds gaming augments players' social lives

Overcoming structural uncertainty in computer modelsOvercoming structural uncertainty in computer models

Monkey caloric restriction study shows big benefit; contradicts earlier studyMonkey caloric restriction study shows big benefit; contradicts earlier study

Researchers developed world's first fluorescent sensor to detect date rape drugResearchers developed world's first fluorescent sensor to detect date rape drug

Copied from nature: Detecting software errors via genetic algorithmsCopied from nature: Detecting software errors via genetic algorithms

Turning back the clock on aging muscles?Turning back the clock on aging muscles?

New study finds differences in concussion risk between football helmetsNew study finds differences in concussion risk between football helmets

Canadian researchers discover fossils of first feathered dinosaurs from North America (10/28/2012)

Tags:
ornithomimids, theropods
This is an artistic reconstruction of feathered ornithomimid dinosaurs found in Alberta. -  Credit: Julius Csotonyi
This is an artistic reconstruction of feathered ornithomimid dinosaurs found in Alberta. - Credit: Julius Csotonyi

The ostrich-like dinosaurs in the original Jurassic Park movie were portrayed as a herd of scaly, fleet-footed animals being chased by a ferocious Tyrannosaurus rex. New research published in the prestigious journal Science reveals this depiction of these bird-mimic dinosaurs is not entirely accurate - the ornithomimids, as they are scientifically known, should have had feathers and wings.

The new study, led by paleontologists Darla Zelenitsky from the University of Calgary and François Therrien from the Royal Tyrrell Museum of Palaeontology, describes the first ornithomimid specimens preserved with feathers, recovered from 75 million-year-old rocks in the badlands of Alberta, Canada.

"This is a really exciting discovery as it represents the first feathered dinosaur specimens found in the Western Hemisphere," says Zelenitsky, assistant professor at the University of Calgary and lead author of the study. "Furthermore, despite the many ornithomimid skeletons known, these specimens are also the first to reveal that ornithomimids were covered in feathers, like several other groups of theropod dinosaurs."

The researchers found evidence of feathers preserved with a juvenile and two adults skeletons of Ornithomimus, a dinosaur that belongs to the group known as ornithomimids. This discovery suggests that all ornithomimid dinosaurs would have had feathers.

The specimens reveal an interesting pattern of change in feathery plumage during the life of Ornithomimus. "This dinosaur was covered in down-like feathers throughout life, but only older individuals developed larger feathers on the arms, forming wing-like structures," says Zelenitsky. "This pattern differs from that seen in birds, where the wings generally develop very young, soon after hatching."

This discovery of early wings in dinosaurs too big to fly indicates the initial use of these structures was not for flight. "The fact that wing-like forelimbs developed in more mature individuals suggests they were used only later in life, perhaps associated with reproductive behaviors like display or egg brooding," says Therrien, curator at the Royal Tyrrell Museum and co-author of the study.

Until now feathered dinosaur skeletons had been recovered almost exclusively from fine-grained rocks in China and Germany. "It was previously thought that feathered dinosaurs could only fossilize in muddy sediment deposited in quiet waters, such as the bottom of lakes and lagoons," says Therrien. "But the discovery of these ornithomimids in sandstone shows that feathered dinosaurs can also be preserved in rocks deposited by ancient flowing rivers."

Because sandstone is the type of rock that most commonly preserves dinosaur skeletons, the Canadian discoveries reveal great new potential for the recovery of feathered dinosaurs worldwide.

Researcher Darla Zelenitsky describes the first ornithomimid specimens preserved with feathers, recovered from 75 million-year-old rocks in the badlands of Alberta, Canada. - Riley Brandt

Note: This story has been adapted from a news release issued by the University of Calgary

Post Comments:

Search
New Articles
Chickens to chili peppersChickens to chili peppers

New species discovery sheds light on herbivore evolutionNew species discovery sheds light on herbivore evolution

Study: The trials of the Cherokee were reflected in their skulls

Ancient shark fossil reveals new insights into jaw evolutionAncient shark fossil reveals new insights into jaw evolution

Neanderthals and Cro-magnons did not coincide on the Iberian PeninsulaNeanderthals and Cro-magnons did not coincide on the Iberian Peninsula

La Brea Tar Pit fossil research shows climate change drove evolution of Ice Age predatorsLa Brea Tar Pit fossil research shows climate change drove evolution of Ice Age predators

Researchers find rare fossilized embryos more than 500 million years oldResearchers find rare fossilized embryos more than 500 million years old

Four-eyed daddy longlegs fossil fills in evolutionary treeFour-eyed daddy longlegs fossil fills in evolutionary tree

Ancient 'spider' images reveal eye-opening secretsAncient 'spider' images reveal eye-opening secrets

New research unwraps the study of ancient Egypt

Extinct carnivorous marsupial may have hunted prey larger than itselfExtinct carnivorous marsupial may have hunted prey larger than itself

Researchers say Neanderthals were no strangers to good parenting

Rare leafcutter bee fossils reveal Ice Age environment at the La Brea Tar PitsRare leafcutter bee fossils reveal Ice Age environment at the La Brea Tar Pits

Ancient shrimp-like animals had 'modern' hearts and blood vesselsAncient shrimp-like animals had 'modern' hearts and blood vessels

'Homo' is the only primate whose tooth size decreases as its brain size increases'Homo' is the only primate whose tooth size decreases as its brain size increases



Archives
April 2014
March 2014
February 2014
January 2014
December 2013
November 2013
October 2013
September 2013
August 2013
July 2013
June 2013
May 2013
April 2013
March 2013
February 2013
January 2013
December 2012
November 2012
October 2012
September 2012
August 2012
July 2012
June 2012
May 2012
April 2012
March 2012
February 2012
January 2012
December 2011
November 2011
October 2011
September 2011
August 2011
July 2011
June 2011
May 2011
April 2011
March 2011
February 2011
January 2011
December 2010
November 2010
October 2010
September 2010
August 2010
July 2010
June 2010
May 2010
April 2010
March 2010
February 2010
January 2010
December 2009
November 2009
October 2009
September 2009
August 2009
July 2009
June 2009
May 2009
April 2009
March 2009
February 2009
January 2009
December 2008
November 2008
October 2008
September 2008
August 2008
July 2008
June 2008
May 2008
April 2008
March 2008
February 2008
January 2008
December 2007
November 2007
October 2007
September 2007


Science Friends
Agricultural Science
Astronomy News
Biology News
Biomimicry Science
Cognitive Research
Chemistry News
Tissue Engineering
Cancer Research
Cybernetics Research
Electonics Research
Forensics Report
Genetic Archaeology
Genetics News
Geology News
Microbiology Research
Nanotech News
Parenting News
Physics News


  Archives |  Submit News |  Advertise With Us |  Contact Us |  Links
Use of this site constitutes acceptance of our Terms of Service and Privacy Policy. All contents © 2000 - 2015 Web Doodle, LLC. All rights reserved.