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(order Edentata, suborder Xenarthra)

An extinct superfamily whose earliest representatives are known from the late Eocene and which flourished until the end of the Pleistocene in N. and S. America. Glyptodons were armadillo-like animals, all larger than modern armadillos and some later forms growing to a length of 2.7 m. The armoured plates tended to be fused into a solid carapace, forming a mosaic of small plates, the skull was covered by a bony casque, the tail was armour-plated, some forms bearing tail spikes, and most of the vertebrae were fused to form three sections, cervical, dorsal, and a final section comprising the latter dorsal, lumbar, and sacral vertebrae.

Subjects: Zoology and Animal Sciences.

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