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Cross-sets
Sedimentary structures like these cross-sets form through the migration of sand dunes on the sea bottom under the action of a current. They can be used to infer flow directions and energy, and even aid in the interpretation of the general depositional system. Pleistocene calcarenites from Le Castella, Calabria, Italy.
Glyptodon clavipes
Glyptodonts are another impressive type of mammal lost to extinction and part of the Pleistocene megafauna. Specimen on display at the Chicago Field Museum of Natural History.
Megatherium
Megatherium is one of the largest land mammals known to have existed and is part of the Pleistocene megafauna. This ground sloth was endemic to South America. Specimen on display at the Chicago Museum of Natural History
Ursus spelaeus
This large-sized extinct bear was a representative of the so-called Pleistocene megafauna. Specimen mounted and on display at the Chicago Field Museum of Natural History.