Most carnivores have teeth to grasp and eat prey, so marine animals with teeth are not uncommon. Sharks, dolphins, eels, whales, many fish species, and marine mammals like seals and sea lions have ...
The “world’s oldest octopus” was actually a 300-million-year-old fossil impostor hiding its secret in tiny teeth.
For 25 years, a hand-sized fossil in Illinois rock was called the world’s oldest octopus. Scientists reexamined Pohlsepia mazonensis with a synchrotron that shoots powerful light beams through stone, ...