I found this at the beach at Eastbourne. It weighs in at 370grams, and feels heavy for its size. I have found Pyrite Nodules in the same place, but this is much bigger. I have also found Coprolite in the same area, but again, not this size. I imagine Coprolite comes in all shapes and sizes but I've not seen one this big. Please help me ID this. thanks. Any other information on the things greatfully received.