I found this several years ago in Scotland but cannot remember where. I have looked for it or something like in fossil books with no success and would like to know what it is. I always think that seen from the side it looks like a fossilised artichoke with pieces of stone pushed into the top and attached to the bottom ! It measures approximately 7 cms across the top and 6 cms from top to bottom including the stones on the bottom, about 4 cms without the stones. I would appreciate help in identifying it. I hope the attached images help.Davidpeuth
What a puzzler. In one of the pics it looks like a fossilised pine cone in the form of coal. In another it reminds me of a fungus i've seen on a wilderness survival programme. The dried fungus acts like charcoal, burning slowly. These could be way off the mark, but could be a start.
I think this is cone-in-cone structure.
The photo here is, to my mind, not very representative
It comes in various shapes and sizes. Nonetheless, yours seems peculiar.
and there plenty of other textual resources and images online.
Even to this day, AFAIK, we don't really know how they form.
Just like Mike says Cone in Cone structure but the ones from our area are usually associated with a Belemnite battlefield (Lower Jurassic)
The specimen I have posted an image of is taken from the side showing the Cone in Cone structure above the Belemnites, it weighs aprox 4kg and is 30cm by 20cm by about 6cm thick.