Today's photo challenge: Time

I asked for suggestions since the only thing I could think of was a clock.
Marjanna: Hour glass? Sundial? Or two things side by side—one old and one new.
Kathy: Calendar, baby picture/current picture, different seasons
John: Fossils

Here's my photo. The sculptural piece is a set of Orthoceras fossils which were water dweller of the Ordovician. They are black and standing on their tails. The fossil fish is a member of the Clupeidae family from the Eocene. The petrified wood is of unknown time/location, and an hourglass that Shanna lent me. Yes she had it in her office at work.