Fun with fossils

So the fiancée, her family and I had a lovely holiday in Clarens (Google Maps) over the December holidays. While there, we took a day trip to the Golden Gate National Park (go if you have a chance, it's gorgeous) and to everyone's delight, I discovered some fossils! Well, I think they're fossils - they certainly look like fossils to me. But, obviously, I'm no paleontologist so I might be entirely wrong. (Angela, the aforementioned fiancée, already blogged about the incident by the way). Anyway, some of the best pictures are below the fold.

My university student card, which is exactly the same size as a standard-issue credit card, is there for scale...