Why Is It Called The KT Extinction?

Why Is It Called The KT Extinction? The event receives its name from the German word Kreide Why is it called the K-T boundary? The abbreviation for the boundary between the Cretaceous and Tertiary periods is the K-T boundary, where K is the abbreviation for the German form of the word Cretaceous. This boundary corresponds

What Was The First Animal On Earth?

What Was The First Animal On Earth? A comb jelly Which came first dinosaurs or jellyfish? Jellyfish have been around for more than 500 million years. That means they appeared more than 250 million years before the first dinosaurs. However, because jellyfish are soft-bodied and almost all water, jellyfish fossils are incredibly rare. Are Jellyfish

How Are Pterosaurs And Birds Similar?

How Are Pterosaurs And Birds Similar? For example, pterosaurs started out with mouths full of teeth, but over time evolved a lighter, toothless, beak-like mouth. They also evolved a lung-airsac system similar to but predating that of birds by some 70 million years, that allowed efficient oxygen exchange for powered flight. What are pterosaurs related