Life 2

Insects

4 BCE

The insects originated at the same time as the first land plants about 480 million years ago, suggesting that insects and plants shared the first terrestrial ecosystems.

Fishes

4 BCE

It was 430 million ago. The heterogeneity and diversity of the fish is one of the most striking aspects of this group and is due to its origin from different lineages. Some of them are evolutionarily related more to mammals than to the fish themselves.

Amphibians

3 BCE

The origin of amphibians dates back to the Devonian period, specifically about 380 million years ago. It is considered as common ancestor a group of fish with fleshy fin or lobed and with articulated jaw, gnathostomes, belonging to the class Sarcopterygii (sarcopterigios).

Vertebrates

3 BCE

The first vertebrates that abandoned the water were amphibians about 350 million years after the appearance of the first fish and it was possible thanks to a group of fish that began to acquire the ability to move on dry land. The first known amphibian was called Ichthyostega.

Reptiles

3 BCE

It was 300 million years ago. Among the oldest terrestrial animals are reptiles, they are of great importance in the evolution and development of the animal world because they were a key element in the emergence of mammals and birds. No doubt a clear expression of the adaptive changes that allowed the conformation of the current animal kingdom.

Pangea

3 BCE

Pangea was the supercontinent that existed at the end of the Paleozoic era and beginning of the Mesozoic that grouped most of the emergent lands of the planet. It was formed by the movement of tectonic plates, which about 300 million years ago united all the previous continents into one.

Dinosaurs

2 BCE

It was 225 million years ago.
Dinosaurs existed and became extinct long before the emergence of the human species. For that reason, its study does not correspond to history (which studies human societies), but to the science of Paleontology.
The existence of dinosaurs in the earth covers three periods that are: Triassic, Jurassic and Cretaceous.

Continents

2 BCE

About 200 million years ago a new increase in volcanic activity tore the super continent (pangea) and the continental fragments were displaced to take the position they occupy today.

Mammals

2 BCE

The first mammals of the late Mesozoic (Triassic, 205 million years old) were small animals the size of mice, with a relatively large skull and jaws designed to chew.

Flowers

1 BCE

Flowering plants (angiosperms) appeared at the beginning of the Cretaceous period, about 140 million years ago, during the Mesozoic Era or the dinosaurs (imagine the Tyrannosaurus rex in a landscape full of flowers). According to scientists, two of the first trees to flower and bear fruit were the magnolias and fig trees.