Miss*Pinocchio said:
Dinosaurs
1. They are reptiles? Or Bird like?
I'd say that the dinosaurs are a branch of the reptiles and the birds are a branch of the dinosaurs.
2. They are cold blooded or warm blooded?
There are some kinds of dinosaurs with body types that look like they have active lives, suggesting they were warm blooded. There were also dinosaur fossils found in Antarctica and Australia. Australia and Antarctica were together back then in the south polar region, so those dinosaur experienced long dark winters like modern Antarctica does, suggesting that they were warm blooded. Feathered dinosaurs with little feathers that would be good for keeping warm suggest warm bloodness because the feathers trap heat made by the body. It won't work well with cold blooded animals because they'd also need to be able to warm up if they're too cold and feathers would make that harder without the body making heat. It is possible that some were cold blooded and some were warm blooded.
3. Fossil is a stone, only proof they exist?
Fossils are not the only things we have from the dinosaurs. We also have footprints and fossil dinosaur poo. There's somebody out there I read about who looks at the fossil poo to see bits of stuff the dinosaurs ate. The fossils of the bones have structures from the blood vessels that were in them and marks from the muscles' attachments to them. There are also fossils of internal organs like
this dinosaur heart. There are other examples out there.
4. They lived during ice age with no fur?
There is no known Mesozoic ice age. The ice ages we know about are the current ice age, some during the Paleozoic and one from 800 to 600 million years ago and possiblity another one over two billion years ago. All of those, except for the current one, happened before there were dinosaurs.
5. Do they shed their dead skin everywhere like snakes do??
I didn't think of this before. It's an interesting question. I wonder how allagator skin grows. They're bigger reptiles so I thought maybe their skin could be similar.
6. Do they need to stay under water to let their skin be moist?
No, they won't need to do that if they had reptile skin. We know the textures from fossil skin impressions like
those. Amphibians are the ones that need to keep their skin moist unless they have more tough skin like toads.
7. There is no real dinosaur bones?
Sure they are real. We know that from things like
this:
"Our conclusive evidence of the authenticity of the Archaeopteryx holotype, however, is provided by what appear to be a number of fine lines on the main slab that run in various directions across the feather impressions in the region of the forelimb; some of them extend through the bony elements ofthe skeleton and on to the tail. They are difficult to spot with the naked eye, but their presence is shown with great clarity by critically lit ultraviolet photography. Associated in a few places with the more easily visible linear staining of an orange-brown colour, they are presumably hairline cracks and are generally filled with mineral matter. These cracks are also present on the counterslab in precisely the same positions."
This indicates that there is no intervening cement layer between the two slabs, as does the presence of manganese dioxide dendrites which have grown over the feather impression in some areas. These too match precisely on the two slabs, even in microscopic detail (Charig et al. 1986).
This means that the fossilized bones and the rock around it had been together for long enough to have those mineral filled cracks to form like that. Somebody creating fake fossils would make the fake bones and then put it into stuff that would solidify around it soon.
8. Those bones in museum are not real?
Sure, they have real bones in the museums. Maybe they would put plaster casts on display so that the real ones could be studied in the back rooms or basement or wherever.
I am unsure about Evolution.
And I don't think there were dinosaurs.
Why we didn't find any fossil or dinosaurs bones?
maybe some artists long time ago, draw or use tool to shape the fossil like that.
If they were made by artists, there would be marks from the tools on them with charactistic marks for different kinds of tools. Nobody had noticed such a thing on all of the fossils. What they did notice were those cracks mentioned above, signs that it really did fossilize and stay around for long enough to have that happen.
Not all fossils were found long ago. They're still finding more now.
