Paleolithic.

 The Paleolithic, also known as the Old Stone Age. This is a very ancient period in history. From Greek παλαιός means -old, λίθος means -stone.

In this period lived Neanderthals, Australopithecus, cave lions, woolly mammoths, woolly rhinoceroses.

Early humans had their own culture. They lived in caves, hunted, fished, created different tools. Ancient people carved figures from clay and stones, cooked prey on fire, they used minerals.

At the end of the Paleolithic period, was the end of the last Ice Age.

Source of image:

https://www.shutterstock.com/es/image-vector/cave-man-woman-banner-stone-age-730020862

Source of image:

 https://www.shutterstock.com/es/image-vector/vector-antique-engraving-drawing-illustration-caveman-1289918650

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https://www.shutterstock.com/es/image-photo/venus-willendorf-prehistoric-figurine-representing-early-1280457994

Paleontology.

Paleontology (παλαιοντολογία) is the study about life on the Earth, which existed before Holocene epoch. This word came from the Greek language παλαιός, palaios  "old", ὄν, on "creature", and λόγος, logos "study".

Science about ancient creatures has similar features with other studies. Biology, geology, and archaeology are related sciences to paleontology. 

Paleontologists are studying the history of life on our planet. Ancient fossils can tell a lot about animals and their lives.

Also, scientists study climate of that periods. Billions and millions years ago the weather was different. Ice age changed life of animals.

Paleontology helps to understand the life of dinosaurs. They lived on the Earth many years ago. Then the dinosaurs died.

This science explains evolution. Different animals have different ancestors. They could be of other size and live in other places.

Plants at that time were different, too.

Science about ancient animals studies in colleges and universities.

Source of image:

https://www.shutterstock.com/es/image-vector/cartoon-paleontology-kids-working-on-excavation-1433866022

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https://www.shutterstock.com/es/image-vector/archaeologist-near-archaeology-items-dig-equipment-1513927937

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https://www.shutterstock.com/es/image-vector/archaeologists-paleontology-scientists-working-on-excavations-1307853316

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https://www.shutterstock.com/es/image-vector/cute-man-archaeologists-cartoon-searching-fossil-601596866

Source of image:

https://www.shutterstock.com/es/image-photo/background-ammonite-shells-concretions-other-paleontological-1835368402

Ice age.

 Ice age is a period in history of Earth. In that time climate changed on our planet. The temperature became lower in different places.

There were many ice ages: the Huronian (2.4-2.1 billion years ago), Cryogenian (850-635 million years ago), Andean-Saharan (460-430 million years ago), Karoo (360-260 million years ago), and Quaternary (2.6 million years ago-present).

During these periods landscapes and Earth's surface changed. Ice aged influenced many different things on our planet.

At the end of these events some animals became extinct, such as: saber-toothed cats, the mastodons, giant ground sloth, wooly mammoth, and other.

Homo sapiens appeared. Humans created new tools for survival in a cold climate. Also, ancient people developed agriculture.

Geology is a science of study ice age. Scientists named geologists study these important periods. They found plants and animals in large glaciers.

Source of image:

https://www.shutterstock.com/es/image-vector/collection-ice-age-animals-mountains-280531367

Source of image:

https://www.shutterstock.com/es/image-illustration/illustration-herd-woolly-mammoths-grazing-early-347240843

Source of image:

https://www.shutterstock.com/es/image-illustration/sabertoothed-cat-tries-drive-shortfaced-bear-1157175928