The Quiz: Ammonites are most closely related to which modern-day creatures?
A Octopuses and squid
B Sea urchins and starfish
C Snails and slugs
In the past, people thought ammonites were snakes that had been turned to stone (snakestones), and we can see why. And while they also resemble snails, in fact ammonites are ancient cousins of the octopus and squid.
The correct answer to this quiz is Octopuses and squid.