They Had To Run More Tests
It was important to run even more tests on the shells if they wanted more conclusive results. The experts had to remove the bone fragments from them, among other things. They also had to find out which genus the animals belonged to. While scientists used to think that there were many different varieties, they now believe that there were only two. What was the fate of these creatures anyway?
They Had To Run More Tests
How And Why They Went Extinct
The extinction of these creatures took place about 10,000 years ago. Early humans probably hunted them for their shells, which could then be used as a shelter. They were likely used as some kind of protective gear against predators as well. We are sure that you at least know about the ice age that happened several millennia ago, but it was not the only thing that caused their extinction.
How And Why They Went Extinct