Why were reptiles able to become the dominant animals on earth?
Asked in Evolution
How did humans become the most dominant species on Earth?
Asked in Science, Animal Life
Are amphibians invertebrates or reptiles the most common animals on Earth?
What was the great extinction?
The most recent one was the Cretaceous-Tertiary event, about 65 million years ago. Prior to it, reptiles were still the dominant species on earth. After it reptiles - especially the huge ones (dinosaurs) gave way to mammals as the dominant species. An event after which the distribution of earth's fauna changed dramatically.
Asked in Dinosaurs
Did we evolve from dinosaurs?
No we do not evolve from dinosaurs. Humans are mammals and evolved from synapsida often called "mammal like" reptiles that infact predated the dinosaurs which evolved another type of reptiles called Archosaurs. Synapsida were dominant animals on the earth for millions of years before the first dinosaurs evolved. It is believed that extreme climate change meant that most species became extinct in the late Triassic period leaving only a few small species which later evolved into mammals during the early Jurassic. The early dinosaurs were much more able to cope with the change in the environment and went on to become the dominant animals for the next 160 million years.