1st Homo sapiens: 23:59The first anthropoid primates, hominids and homo sapiens appeared
1st hominids: 23:53They are primates adapted to terrestrial life, to walk upright in a bipedal posture, with the skull also vertical. The feet are not prehensile unlike the rest of the primates, since the first toe is more robust and is aligned with the remaining four. The hands have a developed thumb and are better able to manipulate objects.
Period: 66 to AD 1
CenozoicoGuide fossil : Numulites
Geological events : continental separation until the formation of the current continents and ends the formation of the Andes mountain range
Climate events : The ice age
1st angiosperms: 23:22Angiosperms commonly called flowering plants or flowering plants are seed plants whose flowers have ordered whorls or spirals of sepals, petals, stamens and carpels; the carpels enclose the ovules and receive the pollen on their stigmatic surface instead of receiving it directly in the ovule like gymnosperms, and when the fruit ripens its "packaged seeds" are found, that is, the mature seed is enclosed in the fruit. , distinctive character that gives the name to the group.
Age of the birds: 23:39Birds display attributes that differentiate them from other vertebrates. Apart from the traits that enable them to fly, their metabolism allows them to grow very quickly and their large brain endows them with keen intelligence and senses. They are so different that their origins have long awakened the curiosity of naturalists.
1st dinosaurs and mammals: 22:44Flowering plants and new types of insects proliferate. More modern teleost fish are beginning to appear.
Age of the reptiles: 22:43
Period: 245 to 66
MesozoicGuide fossil : Ammonites
Geological events : Pangea fracture and possible meteorite impact
Climate events : The temperature rose
Amphibian age: 22:13Amphibians form the most primitive class of vertebrates that, on an evolutionary scale, have managed to colonize the terrestrial environment, thanks to their crosopterygian ancestors who inherited the lung structure, bony limbs, and also provided them with the means of locomotion and the means of breathing air.
First terrestrial plants (gymnosperms): 21:48Vascular plants and pteridophytes (or ferns) develop, especially abundant during the Carboniferous. About 485 million years ago, green algae conquered the earth and became the first land plants, called bryophytes or mosses (plants used to decorate births at Christmas). Many bryophytes have become extinct, but the current ones inhabit humid forests, and near rivers and lakes.
Age of the fish: 21:37The first vertebrates on Earth were fish, and scientists believe they first appeared about 480 million years ago. But the fossil records are patchy and only small fragments have been identified. Some 60 million years later, 420 million years ago, the fossil record shows something completely different: a wide variety of fish species en masse.
Great explosion of life: 9:10Practically all major animal phyla started appearing in the fossil record. It lasted for about 13 – 25 million years and resulted in the divergence of most modern metazoan phyla. The event was accompanied by major diversifications in other groups of organisms as well.
Period: 540 to 245
PalaeozoicGuide fossil : trilobites
Geological events : Fracturing of Pannotia, important mountain ranges arise, volcanic activities and formation of Pangea
Climate events : Ordovician and Carboniferous glaciation
1st most complex life forms: 9:07Stromatolites are microbial reefs formed by the activity of cyanobacteria (or blue-green algae), which are bacteria capable of photosynthesis.
1st life forms: 4:10They were single-celled organisms (CYANOBACTERIA )
Period: to 540
PrecambrianGuide Fossils : Estromatolitos
Geological events : formation of the lithosphere, hydrosphere, atmosphere, Pannotia and Rosínia.
Climate events : great ice age and formation of the biosphere