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Scientists have puzzled over the distinctive form of giraffes at least since Charles Darwin and Jean-Baptiste Lamarck (figuratively) butted heads over how the towering ungulates got their long necks. The Darwinian theory still prevails, but which of the two processes natural selection or sexual selection plays a more important role still divides evolutionary biologists. A new […] ....
Nearly 17 million years ago, a relative of modern giraffes that roamed northern China sported a thick, stumpy neck and a thick skull — perfect for sparring with rival males in headbutting battles. ....
If asked "Why do giraffes have such long necks?", the majority of people - professional biologists among them - will answer that it's something to do with increasing vertical reach and hence feeding range. But while the 'increased vertical reach' or 'increased feeding envelope' hypothesis has always been the most popular explanation invoked to explain the giraffe's neck, it isn't the only one. ....