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crocodile,is new to experts despite the fact that the animal wandered around the Australiancontinent 25 million years ago.Adam Yates,senior leader of earth sciences,said that Australia's suitable instance of thecrocodile's bone was discovered in 2009 at the site of Alcoota Fossil which is eight millionyears old and is 200 kilometers north-east of Alice Springs,Australia.Dr.Yates revealed thatother specimens (had been discovered before.He said,"This specific specimen is one ofthe last of its kind.It is the nicest and the bone of the Baru crocodile is the most complete amongall that have ever been discovered so far."Thanks to the bone's condition,Dr.Yates said that itwould turn into the name-bearing specimen or what he referred to as“the holotype(正模标本)”of the new species.Dr.Yates revealed that the modern Australian crocodile is known for being ancient andfixed,but that is not really true."The current Australian crocodiles are truly new arrivals on theAustralian continent.They are part of the genus Crocodylus,which likely has its origins inAfrica,"he said."This species of crocodile immigrated and conquered Australia just a fewmillion years ago.However,Australia's main native crocodiles,like this one,have totally goneextinct,"he continued.Dr.Yates also revealed that the size of this Baru crocodile can be compared to a recentsaltwater crocodile;however,due to the fact that the bone is strong,it would have had moreweight.He said it is likely that it weighed more than a saltwater crocodile of an equal length.Sothey are looking towards many hundreds of kilos.Studying the details of the bone will bringhints not only to the altering state of Australia's environment from ancient times till now,butalso to how this specific crocodile varies from other species that are known.He also said they have to get down to the details of its structure and make a demonstrationon why the structure of this one is sort of different from all the other species of ancient crocodilefrom Australia that are known.Dr.Yates said the size of the bone shows that the animal was very powerful."Its actuallypowerfully built heavy,thick,deep jaws,and really large teeth all imply that this was a crocodilethat specifically takes megafauna(巨型动物)，”he said..He added that modern crocodiles mostlysurvive on small prey and small fish.This guy didn't survive on small things.Dr.Yates saidmodern saltwater crocodiles also had the ability of taking larger animals.32.What's special about the new specimen?A.It was rare in Australia.B.Its bone is well-preserved.C.It is the first specimen of a new species.D.Its name was given by a famous scientist.33.What can be inferred from the finding of Australian crocodiles?A.They are quite ancient and fixed.B.They are threatened with extinction.C.They may have their origins in AfricaD.They have better adaptability on the Australian continent.34.What's the significance of studying the new specimen?A.Finding out the cause of its disappearance
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