What is this round-shaped pebble with a conical end?

chris · « **on:** 07/11/2020 09:31:44 »

I picked this up in my garden in Cambridgeshire. It's a modest-sized spherical "pebble", although one aspect is conical; the surface over the spherical component has a pitted pattern. The conical part is smooth. I suspect it's some sort of fossilised marine entity, but I would appreciate knowing exactly what it is, if anyone can point me in the right direction please?

CS-stone1.jpg (372.09 kB . 1500x1500 - viewed 6565 times)

CS-stone-2.jpg (441.39 kB . 1500x1717 - viewed 6540 times)

chris · « **Reply #1 on:** 07/11/2020 09:52:42 »

I'm being told "sea urchin, minus the spines, probably Cretaceous (65M years)".

(One careful owner...)

Bill S · « **Reply #2 on:** 08/11/2020 11:41:26 »

I would guess at Echinocorys Sp. but it's a long time since I dabbled in that sort of thing.

Petrochemicals · « **Reply #3 on:** 09/11/2020 02:59:40 »

I would say droppings of some sort

chris · « **Reply #4 on:** 09/11/2020 09:06:53 »

Thanks @Bill S - looks like a good suggestion. So 80Mya.

What is this round-shaped pebble with a conical end?

chris (OP)

What is this round-shaped pebble with a conical end?

chris (OP)

Re: What is this round-shaped pebble with a conical end?

Bill S

Re: What is this round-shaped pebble with a conical end?

Petrochemicals

Re: What is this round-shaped pebble with a conical end?

chris (OP)

Re: What is this round-shaped pebble with a conical end?

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