I was struggling with today's photo until I found a little bag of tiny fossils and thought of this week's theme (tiny things). These are so, so tiny! I always look out for fossils when I'm in the right kind of area - this pile (I think) came from Wren's Nest in Dudley - a site known for Trilobytes. One of these is a tiny bit of Trilobyte but sadly, I couldn't find a whole one.
Thank you!