Tiempo geológico biología History Timeline and Biographies

Formation of Earth

The Earth formed approximately 4.6 billion years ago, marking the beginning of geological time. This period laid the foundation for the development of the planet's geology and atmosphere, setting the stage for the emergence of life in the future.

First Evidence of Life

The earliest evidence of life, in the form of prokaryotic microorganisms, appears in the fossil record around 3.5 billion years ago. This marks a significant milestone in the timeline of Tiempo geológico biología, indicating the start of biological evolution on Earth.

Great Oxidation Event

Around 2.5 billion years ago, the Great Oxidation Event occurred, resulting in a significant increase in atmospheric oxygen due to photosynthetic cyanobacteria. This event dramatically altered the Earth's environment and paved the way for more complex life forms to evolve, a key aspect of Tiempo geológico biología.

Ediacaran Biota Emergence

The Ediacaran period, starting around 600 million years ago, witnessed the emergence of multicellular organisms. This represents a critical phase in the timeline of Tiempo geológico biología, showcasing the complexity of life forms beginning to evolve.

Cambrian Explosion

The Cambrian Explosion, occurring approximately 541 million years ago, marks a rapid diversification of life forms. This event is significant in Tiempo geológico biología as it led to the establishment of most major animal phyla that exist today.

Ordovician Period Begins

The Ordovician period began around 485 million years ago, characterized by a rich diversity of marine life. This period is crucial in the timeline of Tiempo geológico biología as it showcases the evolution of complex ecosystems in the oceans.

First Land Plants Appear

Around 419 million years ago, the first land plants appeared, marking a significant transition in the timeline of Tiempo geológico biología. This development played a vital role in shaping terrestrial ecosystems and influencing atmospheric conditions.

Permian-Triassic Extinction Event

The Permian-Triassic extinction event, occurring approximately 252 million years ago, is the most significant mass extinction in Earth's history. This event drastically affected biodiversity and is a pivotal moment in the timeline of Tiempo geológico biología, leading to the rise of new species in the aftermath.

Mesozoic Era Begins

The Mesozoic Era, beginning around 200 million years ago, is known as the "Age of Reptiles." This era is important in the timeline of Tiempo geológico biología, as it saw the dominance of dinosaurs and the evolution of early mammals and birds.

Cretaceous-Paleogene Extinction Event

The Cretaceous-Paleogene extinction event, occurring around 66 million years ago, led to the extinction of the dinosaurs. This event reshaped ecosystems and is a key moment in the timeline of Tiempo geológico biología, allowing mammals to rise to prominence.

Pleistocene Epoch Begins

The Pleistocene epoch began approximately 2.6 million years ago, characterized by repeated glacial cycles. This epoch is significant in the timeline of Tiempo geológico biología, influencing the evolution and migration of many species, including early humans.

Holocene Epoch Begins

The Holocene epoch began around 10,000 years ago, marking the end of the last Ice Age. This period has seen the rise of human civilization and is a crucial chapter in the timeline of Tiempo geológico biología, as humans began to significantly impact the environment and biodiversity.

Ongoing Research in Geological and Biological Sciences

As of 2024, ongoing research continues to explore the intricate relationships between geological processes and biological evolution. The study of Tiempo geológico biología remains vital for understanding current biodiversity and predicting future ecological changes.