Fossils
Fossil pieces and among them are:
Mollusca
Mollusks (Mollusca, from the Latin mollis "soft") make up one of the great phyla of the animal kingdom. They are coelomate protostome invertebrates, triblastic with bilateral symmetry (although some may have a secondary asymmetry), non-segmented, with a soft body, naked or protected by a shell. Mollusks are the most numerous invertebrates after arthropods, and include such well-known forms as clams, clams, razor clams, oysters, cuttlefish, squid, octopuses, slugs and the great diversity of snails, both marine and terrestrial.
American Mastodon
The American mastodon, an extinct proboscidean that lived from about 3.7 million years ago to about 10,000 years ago, its fossils have been found in the Americas from Alaska and south to El Salvador; In Mexico its main habitat was pine and oak forests, although it also thrived in grasslands and tropical forests.
Brontothere
The brontothere was a hoofed mammal similar to the rhinoceros that lived in the forests that covered the plains of the central United States at the end of the Eocene, 35 million years ago. At two and a half meters high, five meters long and two tons in weight, its size was intermediate between that of the elephant and the rhinoceros.
Megatherium (Megatherium)
is an extinct genus of placental mammals of the order Pilosa, commonly known as megatheres. They were large ground sloths, relatives of the current sloths that lived in South America from the beginning of the Pliocene or Pleistocene until 8,000 years ago, already in the Holocene. In terms of size it was only surpassed by some groups of land mammals, such as the largest proboscideans and perissodactyls such as Paraceratherium.