History of the Earth

1st Homo sapiens 23:59hrs.

1 CE

The homo sapiens appear.

1st hominids 23:53hrs.

4

The first hominids appea, the Australopithecus anamensis is the first of them.

Age of the birds 23:39hrs.

65

Birds and mammals are dominant.

Cenozoic

Period: 66 to 1 CE

Guide fossil: Nummulites
Geological events: The Alpine orogen is formed. The polar caps are formed. Panama itsmo is formed.
Climate events: The Ice Age

1st angiosperms 23:22hrs.

150

Plants with flowers and more complexity appear.

Age of the reptiles 22:43hrs.

225

Reptiles such as dinosaurs are the dominant species.

Amphibian age 22:13hrs.

252

Amphibians are the dominant taxonomy in our planets bot land and seas as they can live in both.

Mesozoic

Period: 252 to 66

Guide fossil: Ammonites
Geological events: Pangea fractures and meteorites impact.
Climate events: Dry and warm weather and low sea level. No glaciations.

First terrestrial plants (gymnosperms) 21:48hrs.

350

Gymnosperms, meaning plants without flours appear on the land.

Age of fish 21:37hrs.

430

Fish are the dominant species.

Great explosion of life 21:10hrs.

541

There's a massive development and many taxonomic groups appear in the marine environment.

Palaeozoic

Period: 541 to 252

Guide fossil: Trilobites
Geological events: Pangea is formed and the sea level rises.
Climate events: Warmer climate.

1st more complex life forms 9:07hrs.

2100

Pluricellular organisms appear as protoctists.

1st Life forms 4:10hrs.

3800

The first and most simple life forms appear and they are cianobacteries, prokaryotes and unicellular organisms.

Precambrian

Period: 4600 to 541

Guide fossil: Stromatolitos
Geological events: The litosphere is formed. 1st orogens.
Climate events: The atmosphere changes from reductor to oxidant. First glaciation.