Giraffes, with their beautifully elongated necks, have only seven cervical vertebrae. So do you, and, for that matter, most mammals. (Sloths and manatees are among the few oddballs that differ.) Short ...
The dinosaurs -- Triassic life -- Jurassic life -- Cretaceous life -- A new era -- Dinosaur science Life on Earth -- Animals with backbones -- What is a dinosaur? -- Dinosaur diversity -- Life in the ...
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