During the later Pleistocene epoch, between 240,000 and 220,000 years ago, steppe wisent (B. priscus) migrated from Siberia into Alaska across the Bering Land Bridge. Bison priscus lived throughout North America from Alaska to southern Mexico[8] throughout the remainder of the Pleistocene. In western North America, B. priscus evolved into long-horned bison, B. latifrons, which then evolved into B. antiquus.

Like its living relative, the armadillo, Glyptotherium had a shell which covered its entire body, similar to a turtle. However, unlike the carapace of a turtle, the Glyptotherium shell was made up of hundreds of small hexagonal scales. Some species grew up to 6 feet (1.8 m) long and its armor may have weighed up to a ton.

Like its living relative, the armadillo, Glyptotherium had a shell which covered its entire body, similar to a turtle. However, unlike the carapace of a turtle, the Glyptotherium shell was made up of hundreds of small hexagonal scales. Some species grew up to 6 feet (1.8 m) long and its armor may have weighed up to a ton.

Megatherium is part of the sloth family Megatheriidae, which also includes the similarly elephantine Eremotherium, which was native to tropical South America and southern North America. Only a few other land mammals equaled or exceeded M. americanum in size, such as large proboscideans (e.g., elephants) and the giant rhinoceros Paraceratherium. Megatherium was first discovered in 1788 on the bank of the Luján River in Argentina.

Megatherium is part of the sloth family Megatheriidae, which also includes the similarly elephantine Eremotherium, which was native to tropical South America and southern North America. Only a few other land mammals equaled or exceeded M. americanum in size, such as large proboscideans (e.g., elephants) and the giant rhinoceros Paraceratherium. Megatherium was first discovered in 1788 on the bank of the Luján River in Argentina.

Megatherium is part of the sloth family Megatheriidae, which also includes the similarly elephantine Eremotherium, which was native to tropical South America and southern North America. Only a few other land mammals equaled or exceeded M. americanum in size, such as large proboscideans (e.g., elephants) and the giant rhinoceros Paraceratherium. Megatherium was first discovered in 1788 on the bank of the Luján River in Argentina.

Megatherium is part of the sloth family Megatheriidae, which also includes the similarly elephantine Eremotherium, which was native to tropical South America and southern North America. Only a few other land mammals equaled or exceeded M. americanum in size, such as large proboscideans (e.g., elephants) and the giant rhinoceros Paraceratherium. Megatherium was first discovered in 1788 on the bank of the Luján River in Argentina.