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Zach Clarke
Hi I wondered if anyone knew what these were in the bedrock at Port Mulgrave? 😁 Click image for larger version - Name: AB5B26EE-AEE0-47C8-8BA6-5DB7E2A4593C.jpeg, Views: 60, Size: 4.33 MB Click image for larger version - Name: 2FADE484-F3A2-4EE1-9994-3EDDE41D17F9.jpeg, Views: 67, Size: 2.57 MB Click image for larger version - Name: 1B73DF83-9B26-4EC5-9177-BBF30242267C.jpeg, Views: 62, Size: 3.74 MB Click image for larger version - Name: 41CFAD20-EAB9-46D9-8809-A7ABA76672E7.jpeg, Views: 61, Size: 2.76 MB Click image for larger version - Name: ABC2B798-6BC4-46C6-8E55-3C0056121330.jpeg, Views: 54, Size: 5.07 MB
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Brittle Star

I am sure someone on here is more familiar with the rock features there than I am and can explain th geology of the place. You could do an online search yourself to see if you can find anything.
The last two pictures could be infilled burrows of some kind or just have a geological explanation.

 Never ask a star fish for directions
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Hello Zach and welcome to the forum. This is a burrow, infilled with mudstone, you haven't included a scale, but I would say a crusacean made it.
Colin Huller
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Hello, in " The jetrock series and the alum shale series of the Yorkshire coast" by M.K. Howarth (1962), are these features discribed as the " pseudo vertebrae" a series of concretions of unknown origine.
This publication is a must for those that wish to explore the geology of the Yorkshire coast, written by one of the greatest, but poorly known, brittish scientist of recent years.

greetings, Bert
the search is as valuable as the finds...
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Think Bert's got this one right - seen similar nodules at Port Mulgrave myself when I've  been down there.
Finally found bone[biggrin]
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