The tiniest fossils excite me more than the biggest dinosaurs. There is a lot to learn from microfossils; fossilized pollen, for instance, can tell us a good deal about the evolution of plants. Many are beautiful. Here are some images from Wikipedia:
Ammonia beccarii, a benthic foram from the North Sea.
Marine microfossils: (diatom, ostracod, radiolarian, sponge spicule, radiolarian, planktonic foraminiferan (two), coccolith)
I’m particularly fond of diatoms and their variety and beauty.
When you hold a piece of chalk, you’re holding microfossils. You may put microfossils on your garden. It may be in paints you use or many other common substances in your home and yard. Pretty cool, eh?