What’s the most weirdest fossil you’ve come across?

Question: What's the most weirdest fossil you've come across?
- Keywords:
  fossil,
  palaeontologist,
  palaeontology,
  weirdest
Asked by nooraya to Lynz on 15 Jun 2011. This question was also asked by student3.
- Lyndsey Fox answered on 15 Jun 2011:
  
  Cool question, I once found a pyritized coprolite.
  
  Basically a sparkly dinosaur poo!
  
  Pyrite is the mineral name for fool’s gold, during the fossilisation process the dinosaur droppings turned into pyrite, making it look golden and quite pretty. I like showing that fossil to kids, because as soon as I tell them it used to be poo, the first thing they do is sniff it!

Question: What's the most weirdest fossil you've come across?