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... From about 5 million years ago onwards, they were slowly replaced by modern elephants, but the last South American species did not finally become extinct until possibly as recently as 400 CE. Gomphotheres also survived in Mexico and Central America until the end of the Pleistocene.
...Two lineages appear to have arisen from these ancestors. One, including animals such as Anancus, developed the short lower jaw typical of modern elephants, while the others, including Platybelodon, developed the lower jaw into an elongated 'shovel', and shortened the upper jaw.