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Tyrannosaurus Rex Skeleton To Be Auctioned Off In Las Vegas

Enya Kim from the Natural History department at auctioneers Bonhams & Butterfields stands in front of one of the world's largest set of shark jaws comprised of about 180 fossil teeth from the prehistoric species, Carcharocles megalodon, which grew to the size of a school bus, at the Venetian Resort Hotel Casino September 30, 2009 in Las Vegas, Nevada. Bonhams & Butterfields hope the fossil will fetch about USD 900,000-1.2 million when it is auctioned off on October 3 at the Venetian as part of their Natural History auction. The centerpiece of the lot of 50 fossils being auctioned is a 66-million-year-old Tyrannosaurus rex skeleton dubbed 'Samson.' The 40-foot-long female dinosaur fossil, excavated in South Dakota in 1992, contains about 170 bones and is said to be the third most complete T. rex skeleton ever unearthed. Bonhams & Butterfields is hoping Samson will fetch more than USD 6 million at the auction.

Ethan Miller / Staff/ Getty Images News/ Getty Images


Megalodon (Greek for "giant tooth"); pronounced MEG-ah-low-don


Oceans worldwide

Historical Epoch:

Late Oligocene-Pleistocene (25-1.5 million years ago)

Size and Weight:

About 70 feet long and 50-100 tons


Marine animals

Distinguishing Characteristics:

Enormous size; huge, sharp teeth


About Megalodon:

The giant prehistoric shark Megalodon is one of the few animals to be identified by its species, rather than its genus, name: technically, this predator is known as Carcharodon megalodon, which places it in the same family as the modern Great White Shark. However, not everyone is convinced that this fearsome shark was a direct ancestor of the Great White, hence its popular name Megalodon. (Read 10 Facts About Megalodon and see a gallery of Megalodon pictures.).

Until a better candidate comes along--which doesn't seem likely--Megalodon stands as the biggest shark in earth's history, a true apex predator that counted everything in the ocean as part of its ongoing dinner buffet, including whales, squids, fish and dolphins (there's some speculation that Megalodon may even have preyed on Leviathan, a giant, prehistoric sperm whale announced to the world in 2010; see Megalodon vs. Leviathan - Who Wins? for a blow-by-blow analysis of this epic battle.)

Why would such a successful predator have vanished off the face of the earth about a million years ago? No one knows for sure, but global climatic changes or a diminution of its food supply (after all, an adult Megalodon would have had to eat hundreds of pounds a day to stay in shape) probably had something to do with it. In any event, Megalodon's legacy has been carried on to the present day by the Great White Shark, which strikes as much fear in the average beachgoer as Megalodon must have inspired in the average prehistoric fish.


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