Član
- Učlanjen(a)
- 30.09.2012
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Otkrice novog dinosaurusa sa pticjim karakteristikama dovodi u pitanje savremenu teoriju o evoluciji leta.
pernati dinosaurus dugacak oko 30cm koji je pronadjen je stariji od ostalih dinosaurusa za koje se mislilo da su preci danasnjih ptica.
Proteklih vekova paleontolozi su mislili da su ptice evoulirale od grupe dinosaurusa zvanih tetrapodi, pre 120-130 miliona godina, otkrice nove vrste Eosinopteryx ove nedelje dovodi te teorije u pitanje.
"This discovery sheds further doubt on the theory that the famous fossil Archaeopteryx -- or "first bird" as it is sometimes referred to -- was pivotal in the evolution of modern birds," says Dr Dyke, who is based at the National Oceanography Centre, Southampton."Our findings suggest that the origin of flight was much more complex than previously thought."
The fossilised remains found in north-eastern China indicate that, while feathered, this was a flightless dinosaur, because of its small wingspan and a bone structure that would have restricted its ability to flap its wings.The dinosaur also had toes suited to walking along the ground and fewer feathers on its tail and lower legs, which would have made it easier to run.
sa sajta : e! Science news
pernati dinosaurus dugacak oko 30cm koji je pronadjen je stariji od ostalih dinosaurusa za koje se mislilo da su preci danasnjih ptica.
Proteklih vekova paleontolozi su mislili da su ptice evoulirale od grupe dinosaurusa zvanih tetrapodi, pre 120-130 miliona godina, otkrice nove vrste Eosinopteryx ove nedelje dovodi te teorije u pitanje.
"This discovery sheds further doubt on the theory that the famous fossil Archaeopteryx -- or "first bird" as it is sometimes referred to -- was pivotal in the evolution of modern birds," says Dr Dyke, who is based at the National Oceanography Centre, Southampton."Our findings suggest that the origin of flight was much more complex than previously thought."
The fossilised remains found in north-eastern China indicate that, while feathered, this was a flightless dinosaur, because of its small wingspan and a bone structure that would have restricted its ability to flap its wings.The dinosaur also had toes suited to walking along the ground and fewer feathers on its tail and lower legs, which would have made it easier to run.
sa sajta : e! Science news
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