Fechar Favor digitar seu Nome de Usuário e Senha
Redefinir Senha
Caso tenha esquecido sua senha, digite seu nome de usuário ou endereço de e-mail abaixo. Um e-mail será enviado com um link onde você poderá criar uma nova senha.
Cancelar
Link para redefinir a senha enviado
Link para redefinir a senha enviado para
Confira o seu email e digite o código de confirmação:
Não vê o email?
  • Reenviar link de confirmação
  • Começar novamente
Fechar
Se você tem alguma pergunta, por favor entre em contato com o Serviço ao Cliente

OnDaFence 36H/44H
44267 publicações
6/12/2017 8:29 pm

Último Lido:
10/12/2017 2:15 am

Halszkaraptor



With a bill like a duck but teeth like a croc's, a swanlike neck and killer claws, a new dinosaur species uncovered by scientists looks like something Dr. Seuss could have dreamed up.

It also had flippers like a penguin, and while it walked like an ostrich it could also swim. That's the first time swimming ability has been shown for a two-legged, meat-eating dinosaur.

The tiny creature, only about 18 inches (45 centimeters) tall, roamed 75 million years ago in what is now Mongolia. Its full curled-up skeleton was found in a sandstone rock.



"It's such a peculiar animal," said Dennis Voeten, a paleontology researcher at Palacky University in the Czech Republic. "It combines different parts we knew from other groups into this one small animal."

In a study released Wednesday by the journal Nature , Voeten and coauthors named it Halszkaraptor escuilliei (HAHL-shka- -tor ES-key-lay-ee) or "Halszka" after the late Polish paleontologist Halszka Osmolska.

Paleontologist Kristi Curry Rogers of Macalester College in St. Paul, Minnesota, who didn't participate in the study, called it "a pretty crazy chimera: a swan neck and dinosaur body, but with a mouthful of tiny teeth and hands and feet that look like they might be good for swimming."

Its mashup body let it run and hunt on the ground and fish in fresh water, said study co-author Paul Tafforeau. He's a paleontologist at the ESRF , known as the European Synchrotron in Grenoble, France, a powerful X-ray generator where numerous tests were made on the fossil.



Lead author Andrea Cau, a paleontologist at the Geological Museum Capellini in Bologna, Italy, said he was at first highly suspicious about the fossil's authenticity, both because of its appearance and the fact that the rock containing the skeleton had been smuggled out of Mongolia and left in a private collector's hands.

"I asked myself, 'Is this a real, natural skeleton, or an artifact, a chimera? If this is a fake, how could I demonstrate it?'" Cau said in an email. "Assuming it was a fake instead of starting assuming that the fossil is genuine was the most appropriate way to start the investigation of such a bizarre fossil."

So researchers used the Synchrotron to create three-dimensional images of the fossil, which showed the creature was indeed a single animal and not a concoction built up from several sources. For example, an arm hidden in the rock perfectly matched the visible left arm, and lines indicating growth matched up across the bones.

Even though the creature wasn't dreamed up by Dr. Seuss, it got a blessing from a Dr. Sues.

Hans Sues, a paleontologist at the Smithsonian Institution who wasn't part of the research, praised the work and said it "shows again how amazingly diverse dinosaurs were."

___

OnDaFence 36H/44H

6/12/2017 8:30 pm

444444444444444


OnDaFence 36H/44H

6/12/2017 8:30 pm

33333333333333333


OnDaFence 36H/44H

6/12/2017 8:30 pm

222222222222222


OnDaFence 36H/44H

6/12/2017 8:31 pm

11111111111111111111


Hungr4Yungr 75H
5766 publicações
6/12/2017 9:11 pm

Double Wow!! And I thought we were running out of new things to know about dinosaurs. Apparently, we are just beginning the discoveries. Thank you Bret. I love this post.


OnDaFence 36H/44H

6/12/2017 9:20 pm

    Citação Hungr4Yungr:
    Double Wow!! And I thought we were running out of new things to know about dinosaurs. Apparently, we are just beginning the discoveries. Thank you Bret. I love this post.
It's the platypus of the dinosaur world !


OnDaFence 36H/44H

7/12/2017 1:09 am

    Citação  :

It's easy!!! a combo of Yiddish and Mongolian!


jrodd 65H
4396 publicações
7/12/2017 1:25 am

Wow that's a freaky looking animal! Good one Onda!


OnDaFence 36H/44H

7/12/2017 8:17 am

    Citação jrodd:
    Wow that's a freaky looking animal! Good one Onda!
It's a long ways from the T-rexes we know!


OnDaFence 36H/44H

7/12/2017 5:43 pm

    Citação  :

and I thought she had Loon!


jrodd 65H
4396 publicações
8/12/2017 1:22 am

mutant duck


OnDaFence 36H/44H

10/12/2017 2:15 am

    Citação jrodd:
    mutant duck
Look at n Egret.... that is throw back if ever there was one.