Did Stingrays Evolve from Sharks?

"I mean, these animals diverged from all other vertebrates over 400 million years ago, while skates and rays diverged from sharks over 200 million years ago. This is around the time that the first modern-day mammals appeared.

Are stingrays and sharks related?

The stingrays are part of a unique group of fishes known as “batoids” and are closely related to sharks. A stingray's body is made of cartilage like a shark's body so sometimes they are called “flat sharks”!

What did manta rays evolve from?

Mantas evolved from bottom-dwelling stingrays, eventually developing more wing-like pectoral fins. M. birostris still has a vestigial remnant of a sting barb in the form of a caudal spine. The mouths of most rays lie on the underside of the head, while in mantas, they are right at the front.