Nov 10, 2012 · The Cretaceous-Tertiary extinction event, or the K-T event, is the name given to the die-off of the dinosaurs and other species that took place some 65.5 million years ago.
As this lost world of dinosaurs and outsize insects squawks and buzzes and whirs to life, an asteroid the size of a mountain is hurtling toward Earth at about 40,000 miles (64,000 kilometers) an hour.
A Sudden End For Dinosaurs in The Fossil Record
In Italy, between Rome and Florence, scientists found fossils in limestone rocks that date back to when the dinosaurs died out. Near these rocks is a layer of clay containing high levels of iridium. Iridium is a very rare metal and not common in rock samples found on Earth. However, it is common in meteorites.
A: There are multiple theories as to why dinosaurs died out, such as asteroid impact, volcanic activity, and climate change. There are many theories because none has been proven to be 100 percent certain as the reason for the dinosaurs’ demise.
The dinosaurs evolved at the beginning of the Mesozoic. All non avian dinosaurs died out 65.5. million years ago at the end of the Mesozoic. However, birds, which are a group …of dinosaurs…
Jun 25, 2013 · What did th Meteors came hurtling to Earth and stopped life as they knew it for the dinosaurs. Complete and instantaneous extinction is no longer the theory.
Again, it’s difficult to say. There are many theories, even despite the iridium layer and the evidence in Mexico. However, there’s a prevailing theory as to how the dinosaurs died, which takes these two puzzle pieces into account. Scientists believe that a bolide, a meteor which explodes in the atmosphere,
Feb 07, 2008 · And why did the alleged impact kill off the dinosaurs while many other forms of life that you would expect to die remained healthy (for example, some extremely light-sensitive species in the ocean survived)? Plenty of evolutionists though, don’t think dinosaurs are extinct anyway.