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Geological events: First ocean 160º C. Origin and early evolution of the earth. Formation of the 1st continental nuclei (Rodinia)
Climate events: Oxygen is created at 160º C. Ice Age. First glaciation. Reducing atmosphere.
Guide fossil: Stromatolite -
The photosynthesis of cyanobacteria initially enriched the Earth's atmosphere with oxygen, giving rise to life as we know it. -
Geological events: Supercontinent (Pangea). Orogeny + Volcanism.
Climate events: Elevated CO2 - heating. Glaciation
Guide fossil: Trilobites -
The first was the Ordovician-Silurian Extinction -
Some beings emerged whose main characteristic was having a body made up of metamers or strongly articulated segments.
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The oldest known vertebrate is Myllokunmingia.
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Gymnosperms are very ancient plants. In fact, they were the first land plants to produce seeds and date back to the end of the Carboniferous period. -
Sponges represent the first organism in the multicellular stage of invertebrate evolution. (Marine invertebrates) -
Another ancestral vertebrate is Haikouichthys ercaicunensis, which existed 530 million years ago and which, despite not possessing all the characteristics of fish, has been characterized as the first fish and even as the ancestor of all vertebrates. (The first fish appear) -
Second mass extinction: Devonian period. The mass extinction of the Devonian period was caused by large ice ages that reduced temperatures and sea levels.
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They were the first vertebrates to explore the terrestrial environment. -
It is known as “the age of reptiles” because it is the dominant group of vertebrates on land and mares. -
Geological events: The displacement of the continents begins until the current situation. Fractura de Pangea. Apertura del atlántico. Alpine Orogeny: Himalayas, Andes, Alps and Pyrenees.
Climate events: Large amounts of CO2. Warm weather. Triassic: 24º C Jurassic: 19º C Cretasic: 24º C
Guide fossil: Ammonites and Belemites -
The large volume of greenhouse gases caused by the millions of cubic kilometers of lava expelled generated global warming that led to such a disaster.
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Permian-Triassic extinction: The largest mass extinction in Earth's history affected a variety of species, including many vertebrates.
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At that time there were few. It was 13 million years later when they became kings on Earth.
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It lasted 1 million years and, as a consequence, 76% of species disappeared. Almost 75% of marine invertebrates perished and affected the surface and oceans of our planet.
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Guide fossil
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The impact of a gigantic asteroid in Chicxulub, off the coast of Mexico, darkened the skies and cooled the planet, killing all dinosaurs except birds.
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The Cretaceous-Paleogene extinction. Although there is no exact duration, it is known that about 76% of the species disappeared. Surely this episode in our history is best known to all of us since it is the time that killed the dinosaurs.
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'Montsechia vidalii' is the oldest angiosperm in the fossil record, 130 million years old. -
Geological events: Completion of continental drift.
Climate events: Oxygen begins to increase and normal temperatures almost controlled. Last glaciations. Ice Age. There was a lot of freezing that caused the sea level to drop.
Guide fossil: Nummulites -
Age of birds: A change in body shape with four stages: egg, larva, pupa and adult.
Age of mammals: Being the dominant group of vertebrates in terrestrial ecosystems, which replaced the Mesozoic dinosaurs. -
The first hominids appeared; direct ancestors of humans -
Anatomically, modern man is classified as Homo sapiens-sapiens.