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  4. Geology, Palaeontology & Archaeology
  5. What is this round-shaped pebble with a conical end?
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What is this round-shaped pebble with a conical end?

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Offline chris (OP)

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


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Re: What is this round-shaped pebble with a conical end?
« Reply #1 on: 07/11/2020 09:52:42 »
I'm being told "sea urchin, minus the spines, probably Cretaceous (65M years)".

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« Last Edit: 07/11/2020 09:55:57 by chris »
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Re: What is this round-shaped pebble with a conical end?
« 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.
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Re: What is this round-shaped pebble with a conical end?
« Reply #3 on: 09/11/2020 02:59:40 »
I would say droppings of some sort
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Re: What is this round-shaped pebble with a conical end?
« Reply #4 on: 09/11/2020 09:06:53 »
Thanks @Bill S - looks like a good suggestion. So 80Mya.
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