Dino pack

cults3d

The text describes the massive extinction event that occurred approximately 66 million years ago, which led to the sudden disappearance of many groups of birds and non-avian dinosaurs. The main article discusses several related theories about the cause of this mass extinction event, with a focus on the impact hypothesis. Here are some key points from the text: 1. Many groups of animals became extinct at the end of the Cretaceous period, including birds, small mammals, squamata, and many other species. 2. The insects suffered no discernible population loss, which left them available as food for other survivors. 3. The Chicxulub Crater in Mexico is believed to be the impact site that caused the mass extinction event. 4. Scientists propose that the meteorite impact caused a long and unnatural drop in Earth's atmospheric temperature or an unusual heat wave. 5. The speed of extinction was likely rapid, taking only hours rather than years. 6. Other possible causes of the mass extinction include the Deccan Traps flood basalts, which released dust and sulfuric aerosols into the air, blocking sunlight and reducing photosynthesis in plants. Theories about the cause of the mass extinction event include: 1. Impact hypothesis: The asteroid impact that formed the Chicxulub Crater is believed to have caused the mass extinction. 2. Deccan Traps hypothesis: The eruption of flood basalts in India may have contributed to the mass extinction by releasing dust and sulfuric aerosols into the air. The text also mentions the work of Walter Alvarez, who proposed the asteroid impact hypothesis in 1980, and Luis Alvarez, who later argued that the Deccan Traps hypothesis was linked to a slower extinction.