Octopus, 135 million years
Even though some believe that the octopus came down from space on an icy meteor as eggs, some scientists believe that they have been on Earth for 135 million years. Octopus are closely related to squids, it’s only their nervous systems that differ.
You are right Amos, everything was created in 7 days by a magic man in the sky.
Carbon dating is not relevant here since it only can date thing that are 50000 years or younger. There are other methods for older things. The theory of evolution makes sense and can explain a lot of the observations that have been done by scientists.