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Alligator mississipiensis - vertebra

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Description

fossil alligator vertebra bone, cm 5 x 4.7 x 2.9.

The alligator is a reptile of the genus Alligator, Alligatoridae family. The name alligator comes from Spanish el Lagarto (lizard), the name under which the first Spanish explorers and settlers in Florida called the alligator. There are two living species of alligator: the American alligator (Alligator mississippiensis) and the Chinese alligator (Alligator sinensis).
The alligators, like all crocodiles (order  Crocodylia), belong to the subclass of Diapsida Archosauria as the dinosaurs.
Due to strong scaly armor of these animals, the order has also called Loricata (from the Latin lorica, armor). These formidable reptiles appeared in the upper Cretaceous (about 90 million years ago), and since then have continued to populate the earth thanks to their characteristics, physiological and behavioral, which have remained almost unchanged over time, surviving even the great extinction at the end of Cretaceous. Because of this, all the crocodiles can be considered true living fossils.

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