Mammals dominate Earth in the last half billion years, evolving since the demise of dinosaurs.
The group of organisms that dominate the Earth in the last half billion years are mammals. Mammals have been a dominant group since the demise of the dinosaurs around 65 million years ago and have continued to thrive up to the present time.
Throughout Earth's history, organisms such as fish, amphibians, reptiles, birds, and mammals have evolved and populated the planet, each group playing a significant role in shaping the biodiversity we see today.
Modern-appearing humans, Homo sapiens, are a relatively recent addition to the evolutionary timeline, originating within the last 200 million years, making mammals a prominent and impactful group of organisms on Earth.
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