Though unusually large, the glyptodon was clearly very similar to a uniquely South American group of mammals: the armadillos.

This picture shows three South American species. (Incidentally, the nine-banded armadillo, which youíre familiar with, is a relatively recent migrant into North Americaóit didnít cross the Rio Grande until about 1850, and didnít enter Arkansas until about 1920.)

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