The article says, in clear English, that today's army ants are exactly the same as their ancestors 100 million years ago.
The article says, in clear English, that today's army ants are exactly the same as their ancestors 100 million years ago.Which is clearly hyperbole, since it also says all living army ants are descended from these "exactly the same" ancestors, yet living army ants vary significantly in morphology and behavior, and comprise different species.