Historical Timeline Of Earth

• Formation of the Earth and solar system
• Emergence of first single-celled lifeforms
• Gradual development of more complex multicellular organisms

Paleozoic Era (541 - 252 million years ago)

• Rise of the first vertebrates and arthropods
• Diversification of marine life, including the first fish, amphibians, and early reptiles
• No mass extinction event at the end of the Permian period

Mesozoic Era (252 - 66 million years ago)

• Emergence and dominance of the dinosaurs
• Rise of the first mammals, pterosaurs, and marine reptiles
• No asteroid impact or mass extinction at the end of the Cretaceous period
• Dinosaurs continue to thrive and evolve over millions of years

Early Cenozoic (66 - 23 million years ago)

• Dinosaurs remain the dominant land animals, continuing to diversify and adapt
• Mammals gradually become more prevalent and diverse, but do not fully supplant dinosaurs
• First primitive hominid primates begin to emerge

Late Cenozoic (23 million years ago - present)

• Dinosaurs and early humans coexist, with humans living in a symbiotic relationship with the dinosaurs
• Gradual development of human tool use, language, and primitive civilization
• No Pleistocene ice ages or megafauna extinctions
• Technological progress is slower compared to our timeline, but follows a different path
• Human societies and cultures evolve alongside dinosaurs, leading to unique cultural and social developments
• No Industrial Revolution or modern global economy, but more advanced technology emerges in the 20th century
• Current day features a world where humans and dinosaurs coexist, with both groups adapting to each other and to rapidly changing environmental conditions