Naked Science Forum

Non Life Sciences => Geology, Palaeontology & Archaeology => Topic started by: chris on 07/11/2020 09:31:44

Title: What is this round-shaped pebble with a conical end?
Post by: 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?

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Title: Re: What is this round-shaped pebble with a conical end?
Post by: chris on 07/11/2020 09:52:42

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

(One careful owner...)

Title: Re: What is this round-shaped pebble with a conical end?
Post by: Bill S 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.

Title: Re: What is this round-shaped pebble with a conical end?
Post by: Petrochemicals on 09/11/2020 02:59:40

I would say droppings of some sort

Title: Re: What is this round-shaped pebble with a conical end?
Post by: chris on 09/11/2020 09:06:53

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