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The only species of the Homo species that evolved is ours, Homo sapiens.
Thanks to its adaptability, its cultural superiority and its evolved social organization, the Homo sapiens population soon began to grow and spread successfully to other regions of Africa and Eurasia. -
Mammals underwent a great development, forming during the Palaeogene era the main current genera.
In the Cenozoic the first hominids appeared, such as the proconsul or the sivapithecus, from them the genus Homo arose -
Guide fossil: Numulites
Geological Events: Continental separation, until today's continents were formed. The Andés mountain range is finished and the Rift Valley formation continues.
Climate Events: Ice Age -
Birds originated in the Jurassic from theropod dinosaurs.
They are he onlu dinosaurs that survived the mass extintion produced at the end of Mesozoic. -
This happened in Jurassic period in the Mesozoic era.
The plants began to give flowers. -
They appeared in the middle of the Triassic period in the Mesozoic era. The first known dinosaurs were bipedal carnivores.
The first mammals arose from the cynodonts, a group of reptiles. That evolved to take advantage of ecological niches to which previously it was not possible to adapt. -
Guide Fossils: Ammonites
Geological Events: Fracturing of Pangea and possible meteor impact.
Climate Events: The temperature was higher and there was a warm climate -
This happened in the Carboniferous period in the Palaezoic era.
The first reptiles appeared,they lived in swamps and they ate insects and other small invertebrates. -
This happened in the Devonian period in yhe Palaeozoic era.
This meant that land and water species emerged and the terrestrial environment was colonized. -
This happened in the era of the Palaeozoic in the Devonic period. In this moment appeared many species of fishs.
In the primitive oceans first appeared the fish without mandible and then cartilaginous and bony fish.
Until the great extinction of the Devonian period occurred and the majority of species became extinct. -
This happened in the era of the Paleozoic, in the Silurian period.
They were plants without flowes like ferns -
This happened in the era of the Palaeozoic they were an explosion of marine life. -
The first most complex life forms are the trilobites. They appered in the Cambrian period, at the beginnin of the Paleozoic. They looks like beetle or cockroach, they were marine animals and it was the guide fossil of the Palaeozoic era. -
Guide Fossils: Trilobites
Geological Events: Fracturing os Pannotia, important mountain ranges emerge, volcanic activity and Pangea formating
Climate Events: Ordovician Glaciation and Carboniferous Glaciation -
They appeared 3.5 billion years ago. They were living beings made up of a single cell, like bacterias and they were procaryotes cells. -
Guide Fossils: stromatolites
Geological events: Formation of terrestrial layers, Formation of Rodinia and Pannotia and fracturation
Climate Events: Great glaciation