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North American Western Camel (artist's impression) |
Here we have a good example of how our understanding of DNA and the fact that evolution occurs at the genetic level, is informing biological research. It perfuses this paper concerning camel evolution and how the extinct North American Western Camel was related to the Asiatic camels, the Bactrian camel and the dromedary, and to the South American llamas, guanacos, alpacas, and vicuñas.
Based on morphology of fossil bones, it had been thought that the Western Camel was a giant llama. That view has now been disproved; it was a sister species of the Asiatic camels.