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27 November 2013 12:59 pm ,
Vol. 342 ,
The new head of the National Center for Science Education promises to "fight the good fight" against attacks on...
Analyses of the H7N9 strains isolated from four new cases show that the virus is evolving rapidly, heightening anxiety...
In 2009, Jack Szostak shared a Nobel Prize for his part in discovering the role of telomeres, the end bits of...
Science has exposed a thriving academic black market in China involving shady agencies, corrupt scientists, and...
Paper-selling agencies flourish in the aura of reputable businesses. For some scientists, it may be difficult to tell...
Featuring the first lunar rover in 40 years, Chang'e-3 is seen as an important milestone on China's quest to send a...
Data collected by satellites and floating probes have chronicled a 2-decade rise in the temperature and thickness of a...
Cholesterol, the artery-clogging molecule that contributes to cardiovascular disease, has another nasty trick up its...
- 27 November 2013 12:59 pm , Vol. 342 , #6162
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ScienceShot: Crocodile-Snouted Dinosaur Discovered Down Under
14 June 2011 7:01 pm
More than 100 million years ago, Australia was home to a unique blend of predatory dinosaurs. The latest to be added to the mix—thanks to a single neck vertebra (pictured above) that was found in Victoria and described today in Biology Letters—is a bizarre class of crocodile-snouted carnivores called spinosaurs. These peculiar dinosaurs have previously been found in South America, Europe, Africa, and Asia, and the Australian fossil closely resembles a spinosaur known as Baryonyx from England. Combined with other fragmentary skeletons attributed to tyrannosaurs, raptors, and allosaurs, this as-yet-unnamed spinosaur may help paleontologists figure out when different dinosaur lineages arrived in Australia and, consequently, when and how the continent split from other land masses 80 million years ago. Prior to that time, all the southern continents were merged in a supercontinent known as Gondwana, and the new find—combined with other dino discoveries that indicate that Australian dinosaurs more closely resemble their counterparts in South America rather than Africa—suggests that Africa may have been the first to split off.
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