[Answer] Dinosaurs lived during which geologic era?

Step 1 : Introduction to the question "Dinosaurs lived during which geologic era?"

...1. Mesozoic Era 2. Precambrian Era 3. Devonian Era 4. Quaternary Era

Step 2 : Answer to the question "Dinosaurs lived during which geologic era?"

Mesozoic Era - Paleontologists place non-avian dinosaurs as having roamed the earth between 245 million and 65 million years ago. This geologic era was called the Mesozoic Era, and it was split into three time periods: the Triassic Period (252 million to 201 million years ago), the Jurassic Period (201 million to 145 million years ago), and the Cretaceous Period (145 million to 66 million years ago). During these periods, the planet underwent several significant changes. According to the U.K.'s Natural History Museum at Tring, this is when the super-continent broke apart into several smaller land masses. Subsequently, climate changes affected habitats and food sources, which in turn affected how dinosaurs and other living organisms evolved. The age of dinosaurs ended with a catastrophic mass extinction event at the end of the Cretaceous Period — an event that largely remains a mystery today.:

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