Yes, the Cambrian Period was before the Mesozoic Era
An asteroid impact
During the Cenozoic era, which began around 66 million years ago, dinosaurs went extinct at the end of the previous Mesozoic era. Therefore, the existence of dinosaurs is something that did not occur during the Cenozoic era.
Just before the current era, which is the Cenozoic, the Mesozoic Era occurred. The Mesozoic, often called the "Age of Reptiles," lasted from about 252 to 66 million years ago and is characterized by the dominance of dinosaurs and the appearance of the first mammals and birds. It ended with a mass extinction event, likely caused by an asteroid impact, leading to the extinction of many species, including the dinosaurs. This transition paved the way for the rise of mammals and the eventual development of modern ecosystems in the Cenozoic Era.
The Cenozoic Era is the most recent geological era, beginning about 66 million years ago and continuing to the present. It follows the Mesozoic Era and is characterized by the rise of mammals and birds, the development of modern flora, and significant climatic changes. The Cenozoic is often referred to as the "Age of Mammals" due to the dominance of mammals after the extinction of the dinosaurs. It encompasses three periods: the Paleogene, Neogene, and Quaternary.
The Cenozoic era started 65 million years ago.
The extinction of the dinosaurs did not occur during the Cenozoic era. Dinosaurs went extinct at the end of the Mesozoic era, which preceded the Cenozoic era.
Cenozoic
We are in the Cenozoic Era which began after the extinction of the dinosaurs and many other life forms.
We are in the Cenozoic Era which began after the extinction of the dinosaurs and many other life forms.
The modern era that began approximately 65 million years ago with the mass extinction of the dinosaurs is called the Cenozoic Era.
Mammals became the dominant land animals in the early Paleocene period of the Cenozoic era, after the extinction of the non-avian dinosaurs at the end of the Cretaceous period of the Mesozoic era.
The Cenozoic Era. This began 65.5 million years ago.
An asteroid impact
During the Cenozoic era, which began around 66 million years ago, dinosaurs went extinct at the end of the previous Mesozoic era. Therefore, the existence of dinosaurs is something that did not occur during the Cenozoic era.
Just before the current era, which is the Cenozoic, the Mesozoic Era occurred. The Mesozoic, often called the "Age of Reptiles," lasted from about 252 to 66 million years ago and is characterized by the dominance of dinosaurs and the appearance of the first mammals and birds. It ended with a mass extinction event, likely caused by an asteroid impact, leading to the extinction of many species, including the dinosaurs. This transition paved the way for the rise of mammals and the eventual development of modern ecosystems in the Cenozoic Era.
The colonization of land by plants did not occur during the Cenozoic era as it happened earlier during the Paleozoic era.
If you are thinking of the dinosaur killer that struck 65 million years ago, the location of the impact was the Yucatan peninsula (in what is presently Mexico).