The Dink Network

I tried to speak to everyone, but only the sandfish has the option of asking about the trilobite, but he won't talk back to me.

: I tried to speak to everyone, but only the sandfish has the option of asking about the trilobite, but he won't talk back to me.

Run into the girl in the red/pink dress that is one screen east of the pyramid, and then search which way to go.