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A 145 - million - year - old dinosaur about the sizing of a wild Republic of Turkey sported a plume of tail feather that were astonishingly New - sounding and aerodynamic in form , a new report finds .
Though flight ready , the animate being ’s tail feathers may or may not have been used for pilot , state the researcher who found the exceptional specimen , a roughly 3.6 - foot - long ( 1.1 meter ) dinosaur , in 2015 inChina ’s Liaoning Province , an area hump for its unbelievably well - preserved fossils of dinosaurs with feathers .
An artist’s interpretation ofJianianhualong tengi, a dinosaur that lived during the early Cretaceous period between 100 million and 145 million years ago.
The scientists key the findJianianhualong tengi , after Jianianhua , the Formosan company that bear out the study , and " long , " the Mandarin news for " flying lizard , " the researchers enunciate . The species name honors Fangfang Teng , the film director of the Xinghai Paleontological Museum of Dalian in China , who assist the paleontologists enter the specimen . [ Images : These Downy Dinosaurs Sported Feathers ]
J. tengi , which matter just over 5 pound . ( 2.4 kilograms ) , was a troodontid , a bird - similar theropod dinosaur . Though mosttheropods , such asVelociraptorandTyrannosaurus male monarch , were carnivorous , J. tengiwas likely an omnivore , based on its tooth figure and the diet of its closest relatives , said study atomic number 27 - lead investigator Michael Pittman , an adjunct professor of vertebrate palaeontology at the University of Hong Kong .
Asymmetrical feathers
Unlike the symmetrical feathers seen on most dinosaurs from theCretaceous period , J. tengi ’s plumage were asymmetric , with the vanes on one side of the fundamental barb longer than those on the other side — a feature article that is essential for flight , the investigator pronounce .
" hoot feathers demand to be crooked in ordering to form an airfoil , " said Steve Brusatte , a vertebrate fossilist at the University of Edinburgh , who was not involved with the study . " It has to do with the physic of wing shape , the same way thatairplane wingshave to be designed a certain way . "
However , asymmetric plumage " are also find in species that do not fly , " make it ill-defined whether the Cretaceous - age dinosaur could take flying , Pittman enunciate .
The incredibly well-preserved skeleton ofJianianhualong tengi, a dinosaur with tail feathers that may have been capable of flight
The crooked feathers onJ. tengi ’s tail are the first record of aerodynamically link up feathers in the wench - comparable troodontid dinosaurs , Pittman suppose . TheVelociraptorrelativeMicroraptor(a dromaeosaur ) also had crooked feathers , Pittman read .
" This reveals that the close common root of birds ( share with troodontids and the bird - like dromaeosaur dinosaurs , bird of prey ) , possessed crooked feathering , " Pittman say Live Science in an electronic mail .
The finding will belike aid paleontologists decipher the timing of theevolutionof asymmetrical feathers , both Pittman and Brusatte said .
A dinosaur tail feather that shows asymmetry
" Strangely enough , the asymmetrical feathers are on the tail , " Brusatte separate Live Science in an email . " Does this imply thatJianianhualongwas using its tail to wing ? It ’s intemperate to be certain . " [ picture : Velociraptor Cousin Had Short Arms and Feathery Plumage ]
J. tengi ’s arm and leg feathers are n’t preserved well enough to show their correspondence , " so we do n’t know what the feather term of the entire animal would have been like , " Brusatte said . " It is possible thatJianianhualonghad asymmetrical tail feathers , but harmonious ( and thus non - flight - worthy ) arm and leg feathers like most other nonbird dinosaur . We just do n’t know . "
Perhaps feather dissymmetry develop first for show purposes before the feature of speech were used for escape , Brusatte say . The investigation into the history of flight is a blistering issue , as a growing telephone number of researcher seek to decide which dinosaurs could fly . For instance , research gift at the 2016 Society of Vertebrate Paleontology meeting in Salt Lake City showed that several dinosaur , such asMicroraptor , and early birds , includingArchaeopteryx , could likely wing for little distances , Live Science antecedently reported .
A photograph (A) and a laser-fluorescence image (B) ofJianianhualong tengi’s tail frond
The raw discipline was published online today ( May 2 ) in thejournal Nature Communications .
Original clause onLive scientific discipline .
