Collect ocean fragments by participating in science popularization tasks in the Alipay Magic Ocean System. Once all are successfully collected, users can synthesize puzzles and start a wonderful experience. Let’s take a look at the time when jellyfish appeared on the earth. Answer to the question "Earlier or later than the dinosaurs"?
Answer: earlier
Knowledge expansion: Jellyfish is a kind of lower invertebrate zooplankton that is distributed in waters all over the world. Jellyfish appeared earlier than dinosaurs and can be traced back to 650 million years ago. They are of great significance in the history of scientific development of biological research.