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-   -   Dinosaurs did not become extinct they evolved? (http://www.wutang-corp.com/forum/showthread.php?t=119158)

Ol' Dirty Trixˣ 10-24-2012 05:08 PM

Dinosaurs did not become extinct they evolved?
 
woolly mammoths look like elephants
sabre tooth tigers look like tigers now
elks are moose
and there's probably more


http://www.biology.iastate.edu/Cours...letons/ratskel

http://upload.wikimedia.org/wikipedi...Marasuchus.JPG


if you arch the back and reposition the legs on the second skeleton it would look pretty much like the first skeleton.


the first is a rat

and the second is a dinosaur called Marasuchus lilloensis

it has four legs so i reckon it would have ran around on all four legs instead of two hind legs as pictured.

John Nash 10-24-2012 05:20 PM

Quote:

Originally Posted by Ol' Dirty Trixˣ (Post 2274918)
woolly mammoths look like elephants
sabre tooth tigers look like tigers now
elks are moose
and there's probably more


http://www.biology.iastate.edu/Cours...letons/ratskel

http://upload.wikimedia.org/wikipedi...Marasuchus.JPG


if you arch the back and reposition the legs on the second skeleton it would look pretty much like the first skeleton.


the first is a rat

and the second is a dinosaur called Marasuchus lilloensis

it has four legs so i reckon it would have ran around on all four legs instead of two hind legs as pictured.

none of the animals mentioned in the first paragraph are dinosaurs. saying Marasuchus walked on 4 legs like a rat isnt enough evidence that it evolved and didnt die out

John Nash 10-24-2012 05:22 PM

personally i believed some dinosaurs had evolved but majority had become extinct but small mammals survived and most modern land animals come from those small mammals that had survived

Ol' Dirty Trixˣ 10-24-2012 05:28 PM

i also think that particular dinosaur would have been furry too, if rats are descended from them.

John Nash 10-24-2012 05:35 PM

Quote:

Originally Posted by Ol' Dirty Trixˣ (Post 2274925)
i also think that particular dinosaur would have been furry too, if rats are descended from them.

where have u heard that rats came from dinosaurs.

CEITEDMOFO 10-24-2012 05:37 PM

ROfL

Ol' Dirty Trixˣ 10-24-2012 05:42 PM

Quote:

Originally Posted by rakimkoolgrapwutang (Post 2274927)
where have u heard that rats came from dinosaurs.



i haven't heard it from anywhere, it's from my observation. look at the bones.

CEITEDMOFO 10-24-2012 05:49 PM

Quote:

Originally Posted by Ol' Dirty Trixˣ (Post 2274932)
it's from my observation.

http://fireden.net/wp-content/upload...-General30.gif

Ol' Dirty Trixˣ 10-24-2012 05:54 PM

how many four-legged species are there that walks on only two legs?

PANDA PISS 10-24-2012 05:59 PM

Haha wtf, a few species of dinosaur evolved to birds, not mammals

Ol' Dirty Trixˣ 10-24-2012 06:02 PM

to me, from the look of the bones, it looks like a giant rodent, not a cold-blooded reptile. just talking about that particular skeleton.

Ol' Dirty Trixˣ 10-24-2012 06:03 PM

though, there are reptiles now that do look like smaller dinosaurs.

tekunique 10-24-2012 06:21 PM

"scientific facts" about dinosaurs are changing everyday with newfound evidences. i think its pretty safe to say they are the ancestors of modern day birds. majority of them are agreeing now that many T-Rex had muhfuckin feathers n shit..

from Wiki :


Quote:

In 2004, the scientific journal Nature published a report describing an early tyrannosauroid, Dilong paradoxus, from the famous Yixian Formation of China. As with many other theropods discovered in the Yixian, the fossil skeleton was preserved with a coat of filamentous structures which are commonly recognized as the precursors of feathers. It has also been proposed that Tyrannosaurus and other closely related tyrannosaurids had such protofeathers. However, skin impressions from a Tyrannosaurus rex specimen nicknamed "Wyrex" (BHI 6230) discovered in Montana in 2002,[68] as well as other large tyrannosaurid specimens, show mosaic scales,[69] leading Xu et al. (2004) to speculate that the tyrannosauroids may have had different skin coverings on different parts of their bodies - perhaps mixing scales and feathers. They also speculated that feathers may correlate negatively with body size - that juveniles may have been feathered, then shed the feathers and expressed only scales as the animal became larger and no longer needed insulation to stay warm. They based this on the fact that as an object increases in size, its ability to retain heat increases due to its decreasing surface area-to-volume ratio. Therefore, as large animals evolve in or disperse into warm climates, a coat of fur or feathers loses its selective advantage for thermal insulation and can instead become a disadvantage, as the insulation traps excess heat inside the body, possibly overheating the animal. Protofeathers may also have been secondarily lost during the evolution of large tyrannosaurids like Tyrannosaurus, especially in warm Cretaceous climates.
This theory was challenged by the discovery of Yutyrannus, a 9 meter (30 ft) long, 1,400 kilogram (3,100 lb) tyrannosauroid that preserved feathers on some widely-spaced body parts, indicating that its whole body was covered in feathers, but it is worth noting that it lived in a much colder environment.


Ol' Dirty Trixˣ 10-24-2012 06:25 PM

that tail is too long for a bird. plus if it had wings then the wings would be quite big in comparison to the legs and tail. the arms and the tail of that skeleton does not suggest it had wings.

Ol' Dirty Trixˣ 10-24-2012 06:29 PM

if it lived in a cold climate then it would make sense for it to have fur. think of the animals in the arctic, they tend to have fur.


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