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Wednesday, June 15, 2011

Nanotyrannus The Small Version Of The T-Rex


In 1942, Charles W. Gilmore discover the first fossils of the Nanotyrannus in Wyoming.                                                                                         
Nanotyrannus is the small version of T-Rex. Think of him a mine me T-Rex. I wouldn't want to meet either of them on the street! Would you? 
                                        
                                                          T-Rex and Nanotyrannus
 Nanotyrannus is know as the "tiny tyrant" He might of been "tiny" coming in at a mere 7 ft. in height, 17 feet long and weighing bout 1 ton. Tho, that's not my definition of tiny!

 Nanotyrannus lived in the United States in the Late Cretaceous Period 67-65 millions of years ago. Nanotyrannus was a great hunter, he had sharp claws and knife-like teeth, powerful neck muscles and was a swift and agile predator. Their favorite prey were the hadrosaurs that had the pleasure of living with them. They had great vision and depth perception due to their large eyes which looked forward. 

Many paleontologists now believe that Nanotyrannus was in fact a juvenile Tyrannosaurus Rex and not a separate genus of dinosaur. Partially because of the skull bones not being fused together indicating a young animal. Others believe that they might be a type of huge Dromaeosaur.  
                                                                                                                                                            
                    






                                           
                                                                                         

Monday, June 6, 2011

Diplodocus

Diplodocus was a long-necked, whip-tailed giant, measuring about 90 feet (27 m) long with a 26 foot (8 m) long neck and a 45 foot (14 m) long tail, but its head was less than 2 feet long. It was among the longest land animals ever. Its nostrils were at the top of its head and it had peg-like teeth, but only in the front of the jaws. Its front legs were shorter than its back legs, and all had elephant-like, five-toed feet. One toe on each foot had a thumb claw, probably for protection. A fossilized Diplodocus skin impression reveals that it had a row of spines running down its back.


Lived Late Jurassic period, about 156-144 million years ago. Found in Western U.S.A.
Diplodocus was more lightly built than the other giant sauropods, and may have weighed only about 10-20 tons. Its backbone had extra bones underneath it, which had bony protrusions running both forwards and backwards (anvil shaped), a "double beam", probably for support and extra mobility of its neck and tail. It may have used its whip-like tail for protection. A recent Diplodocus skin impression was found, showing a row of spines running down the back.

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