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                                                                    Megalodon How old is it? approximately 23 to 3.6 million years ago  megalodon ,  is an extinct species of shark that lived approximately 23 to 3.6 million years ago, during the Early Miocene to the Pliocene. When was it extinct? megalodon  had become extinct  by the end of the Pliocene 2.6 million years ago, when the planet entered a phase of global cooling. Precisely when the last  megalodon died is not known, but new evidence suggests that it was at least 3.6 million years  ago. When did they discover it?   Scientists have studied  megalodon teeth that were found  in Africa, North America, South America, India, Australia, Japan, and Europe. Based on the locations that these teeth were unearthed, it is the firm belief that  they  thrived in the world's warmer waters. Picture of the meg alodon  jaw .                                            The most common fossils of megalodon are its teeth. Dia

  Science 2.0. A fossil discovered in northeast China has pushed back mammal evolution 35 million years and provides new information about the earliest ancestors of most of today's mammal species—the placental mammals.  Sinensis was 160 million years old fossil pushes back Mammal evolution  Discovery. It was collected in the Daxigou site, Jianchang, from the Tiaojishan Formation dated at about 160 million years ago. It was first named by Zhe-Xi Luo, Chong-Xi Yuan, Qing-Jin Meng and Qiang Ji in 2011 and the type species is  Juramaia sinensis Fossil . Some charecteristics of the juramaia sinensis includes features of the long dead organism including its skull and its hair.

Hadrosaurus is more important for historical that for paleontological reason. This was the first hear-complete dinosaur fossil ever to be excavated in the United States, and one of the few to be discovered and one of the few to be discovered on the eastern seaboard (New Jersey, to be exact, where it's now the official state dinosaur) rather than in the west. Named by the American paleontologist Joseph Leidy, Handrosaurus lent its moniker to a huge family of d uck-billed dinosaur- the hadrosaurus-but experts still debate t he original "type fossil" merits its genus designation. Hadrosaurus is about 80 million years ago Hadrosaurus was unearthed in October, 1858    It was execucacted at Haddonfield, New Jersey        https://www.youtube.com/watch?v=Yhlp5_e_G5c

How old is sue the "tyrannosaurus rex"? About 67 million years   When was the discoverd?   1900   where was it excavated? Cheyenne river, chicago what did they discoverd? that it is the only one that is almost complete and it was the largest T-rex. the fossil how it looks like with skin and here is the video

                                            carbonemys                                                                                     how old is the carbonemys 60 to 58 million years old

 The sabre-tooth cat was  extinct  about 12,000 years ago.