Novedades sobre la relacion entre pajaros y dinosaurios

[sbassi@...>]

Hola!

Esta noticia salio salio hace un par de dias y pronto estara el Noti 
Ciencia del CAIRP.
Se los adelanto a la lista:





  A “missing link” between dinosaurs and birds has been discovered in 
Argentina, paleontologists reported Tuesday.
        The discovery of the 90 million-year-old dinosaur fossil came to 
light even as Hollywood was hyping “The Lost World,” the latest big-budget 
foray into dinosaur lore. Scientists said the find in Argentina 
strengthened the case for arguing that birds were essentially “living 
dinosaurs.” 

    Paleontologist Fernando Novas of the Argentine Museum of Natural 
History announced the discovery of the new species, Unenlagia comahuensis, 
at a news conference in Washington. The discovery is documented in the May 
22 issue of Nature magazine.
        The fossil was found in the Patagonia region of Argentina, Novas 
said. More than 20 bone fragments were collected, including pelvic bones, 
ribs, a shoulder blade, an upper arm and a thigh bone.
        The dinosaur, which stood about 4 feet high at the hip and 
measured about 7 1/2 feet long, ate meat and traveled on land rather than 
flying. But researchers noted similarities between the dinosaur’s 
relatively small forelimbs and the wings of birds.
        Novas said the fossil record showed the clearest link yet between 
dinosaurs and birds.
        "Because birds are dinosaurian descendants, they are dinosaurs. 
Birds are living dinosaurs," Novas said.
        Paul Olsen, a paleontologist at Columbia University, said bird 
species are thought to have developed from smaller species of dinosaurs 
rather than such giants as Tyrannosaurus rex.
        “Small dinosaurs are rare and they’re hard to find, and this is a 
very good fossil of one of these missing links between birds and 
dinosaurs,” Olsen told MSNBC.
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Regards,
Seba.

* Sebastian Bassi                               (PGP key upon request)    *
* Autor de: "Manual Internet", Muy Interesante, Marzo 1996, Argentina.    *
* Internet e-mail: sbassi en fcairp.sicoar.com      Fidonet: 4:900/358.10    *
* CAIRP Home Page: http://www.cairp.org                                   *