What are ammonites? When did they become extinct? What are the suggested causes behind ammonites’ extinction? Ammonites are a group of coil-shelled mollusk animals that went extinct 66 million years ago. Scientists don’t know the exact cause of ammonites’ extinction, but it is theorized that they died as a result of ocean changes due to the asteroid strike. Keep reading to learn about ammonites’ extinction causes.
What Caused the Ammonites’ Extinction?










