I just bought this on sale - have fond memories of the original game and I am having trouble with the interface. I managed to make it to the 2million bc area and got the log but now I cannot find my recall button. Please help. I have looked all over the screen and there is nothing I can interact with.

Bring up the Pegasus biochip. It's located there!

Press T to switch to biochip, backspace to select other biochips.