This game is a free game and you can play offline. Your task is to help Bob to run through the mysterious jungle, jump over obstacles, and super evil monsters to save the beautiful princess at the final destination. Journal reference: Royal Society Open Science, DOI: 10.1098/rsos.Super Bob's World is a free amazing running and jumping adventure game with the legendary mission: Princess Rescue The team’s next step will be to explore when the serrations evolved in marine crocodiles, to see if fossils reveal a progression from fish to turtle-eating. “I’d be surprised if such subtle features had any meaningful function.” “The analogy with tyre or shoe treads is probably stretched, as the features extend down off the apex of the tooth, but only the apex of each tooth is going to regularly contact turtle shells,” says Mitchell.
“It’s possible the denticles helped in both ways,” says Young.īut Jon Mitchell, who researches the evolution of snake teeth at the University of Chicago, is not convinced. “As we know, Machimosaurus was eating sea turtles, so a better grip on the shells would have greatly helped with biting down and breaking the shell.”Īnother possibility, he says, is that the serrations strengthen the enamel, helping the teeth withstand the forces needed to crack open the shells. “The greater surface area of shoe treads helps grip in wet conditions,” he says. Young likens the serrations to shoe treads. “As serrated teeth increase the efficiency of slicing into prey, our discovery may help us learn when this group of marine crocs shifted from feeding on small, fast-moving prey like small fish to large-bodied prey like turtles,” says Young. These structures may have enabled the species to change its diet. Called “pseudo-denticles”, these serrations formed on top of enamel ridges that extend to the tip of each tooth.
hugii once prowled lagoons and coastlines, a team led by Mark Young of the University of Edinburgh, UK, noticed subtle, serrated structures running up the side of the teeth, never seen before in any marine crocodile species. Now it seems the Late Jurassic croc Machimosaurus hugii had teeth with a special feature for this purpose.Īfter scrutinising fossilised teeth found in Portugal and Switzerland, where M. But even for a creature 9 metres long, chomping through the wet, slippery shells of giant sea turtles isn’t easy.
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