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=== Sexual dimorphism and group behavior ===
No evidence of [[sexual dimorphism]] in ''Glyptodon'' has been described, but it has been observed in the close relative ''Glyptotherium'' based on fossils found in Pliocene deposits in Arizona''.'' In the genus, the caudal aperture of males and females differ in that the marginal osteoderms of males are much more conical and convex than those of females. Even in the carapaces of newborn ''Glyptotherium'', the marginal osteoderms are either conical or flat, which enables their sex to be determined.<ref name="Gillette-2016" /> No direct evidence of
== Distribution and paleoecology ==
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