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For Huge Ancient Kangaroos, Hopping was Dicey

Kangaroos hop, right? Well, not all of them. Scientists said this week that a biomechanical and statistical analysis of fossil bones of a group of huge extinct kangaroos shows that the largest of the bunch in all likelihood could not hop as their modern-day relatives do with aplomb. The study focused on a group of big-bodied, short-faced kangaroos called sthenurines that lived in Australia from about 13 million years ago until about 30,000 years ago, disappearing after the first humans...


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