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How does the Cretaceous-Tertiary extinction relate to the age of Mammals?
The extinction of so many organisms left a large ecological niche to expand into, which mammals did.
What did the extinction of dinosaurs lead to?
The evolution of mammals
Did early mammals cause the extinction of dinosaurs?
No. By the time the dinosaurs went extinct mammals still played a relatively minor role ecologically. It is generally accepted that an asteroid or comet struck the earth, causing ecosystems to collapse worldwide and resulting the extinction of many groups of animals including the dinosaurs.
What is the primary hypothesis for the extinction of large mammals such as mammoth?
The primary hypothesis is that they were led to extinction by hunting by humans.
What contributed to the adapted radiation of mammals?
the extinction of most dinosours
Which event is the most likely to cause for the four periods when punctuated equilibrium seems to have occurred?
Extinction events, such as the Permian extinction and the KT extinction event. You have adaptive radiation driving evolutionary change after such events. Google " the rise of the mammals. "
What was the positive result of the dinosaur extinction?
The extinction of the dinosaurs is one of the many events that allowed humans to evolve. After the dinosaurs died out, mammals began to occupy the world they left behind. Mammals grew and diversified, spreading throughout the Earth, and eventually giving rise to humans.
What was the result of the Cretaceous Tertiary extinction 65 million years ago?
The Cretaceous-Tertiary extinction event, also known as the K-T extinction, resulted in the mass extinction of non-avian dinosaurs along with many other species. It is believed to have been caused by a combination of factors, including a massive asteroid impact and volcanic activity, leading to significant environmental changes. This event paved the way for the diversification of mammals and eventually the rise of humans.
What is the name for the modern era which began approximtely 65 million years ago with the mass extinction of the dinosaurs?
The modern era that began approximately 65 million years ago with the mass extinction of the dinosaurs is called the Cenozoic era. It is also known as the Age of Mammals, as mammals began to dominate the Earth during this time.
What groups of organisms are most in danger of extinction?
Arthropods, they make up about 75% of all described life and have more than 900,000 members.
What is the pleistocene overkill theory?
The Pleistocene overkill theory suggests that the extinction of large mammals during the Pleistocene epoch was caused by human hunting pressure. It argues that early humans were responsible for the mass extinction of large mammals like mammoths and saber-tooth cats, leading to significant changes in ecosystems. This theory remains a topic of debate among scientists studying prehistoric extinctions.
When do small mammals appear in fossil records?
During the KT extinction event the majority of life on earth became extinct. Small mammals, however, were able to survive this mass extinction.
