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deerhunter
These are the horseshoe crab trace fossils in the Gristhorpe member at Cloughton Click image for larger version - Name: IMG_20190505_112707.jpg, Views: 38, Size: 298.97 KB Click image for larger version - Name: IMG_20190505_111558.jpg, Views: 40, Size: 290.24 KB Click image for larger version - Name: IMG_20190505_111709.jpg, Views: 37, Size: 280.46 KB
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Dirty Pete
Very similar to the lunate markings at Westbury, here's some pics for anyone who's interested,
PA150002.jpg 

PA150004.jpg 
PA150005.jpg 
Finally a large sandstone slab covered in crab markings amongst other things
PA150001.jpg 
Pete.
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deerhunter
Are they middle jurassic like the ones in North Yorkshire?
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Dirty Pete
No they are Rhaetic (Upper Triassic), you might find this paper by Wang interesting. 

http://www.horseshoecrab.org/research/sites/default/files/G.Wang%201993.pdf


Pete.
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