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Loujane
Hi, 

Could you please help me identify this fossil.

Found along the River Swale, near Swaledale, Yorkshire Dales.

Around 20cm in length and about 15cm width.

Many Thanks

Louise Click image for larger version - Name: 20190930_170816.jpg, Views: 62, Size: 265.01 KB Click image for larger version - Name: 20190930_170816.jpg, Views: 64, Size: 265.01 KB Click image for larger version - Name: 20190930_170822.jpg, Views: 64, Size: 193.51 KB Click image for larger version - Name: 20190930_233707.jpg, Views: 64, Size: 461.59 KB Click image for larger version - Name: 20190930_233650.jpg, Views: 69, Size: 197.81 KB Click image for larger version - Name: 20191001_155451.jpg, Views: 59, Size: 130.12 KB Click image for larger version - Name: 20191001_155507.jpg, Views: 53, Size: 280.99 KB Click image for larger version - Name: 20191001_155419.jpg, Views: 42, Size: 274.62 KB Click image for larger version - Name: 20191001_155435.jpg, Views: 37, Size: 279.86 KB
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prep01
Hi Louise, I think that the partial shell is a bivalve and the curved shell below it a scaphopod mollusc. the other tube like creature I'm afraid is too out of focus. There are other bits and pieces in the block (?limestone) and I think is from a marine band of the Carboniferous period.( Comment from Tarqun?) Oh, and what that 'dohnut shape is I don't have a clue!
Colin Huller
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Loujane
Thank you very much for your reply, really fascinating!

I have attached some more photos,

Many Thanks

Louise Click image for larger version - Name: 20191001_112140.jpg, Views: 23, Size: 199.86 KB
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Loujane
Thank you very much for your reply, really fascinating!

I have attached some more photos,

Many Thanks

Louise Click image for larger version - Name: 20191001_112140.jpg, Views: 24, Size: 199.86 KB Click image for larger version - Name: 20191001_112620.jpg, Views: 28, Size: 209.87 KB Click image for larger version - Name: 20191001_112111.jpg, Views: 33, Size: 225.20 KB Click image for larger version - Name: 20191001_112119.jpg, Views: 38, Size: 508.41 KB Click image for larger version - Name: 20191001_112630.jpg, Views: 37, Size: 589.02 KB
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prep01
Hello again Louse, and thanks for the new photos I would ask that you use a scale in all photos please in future as it really helps\\\\\\\\\\\\\\\\\\\\\1 \\9A ruler is best).
I am a little concerned that this block is one which has been transported from somewhere as one ot two of the fossils look remarkably like Jurassic fauna by enlarging you new photos. Tarquin might be able to sort it out!
Colin Huller
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Loujane
Hi Colin,

Thanks for your email, I have attached some scale images to the original post, hope they are helpful.

Many Thanks,

Louise
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prep01
Hi Louise, sent some of your photos to a friend who knows the area and he confirms that it is a Carboniferous block and that the long fossils are indeed crinoid stems.
Colin Huller
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TqB
Just seen this! I agree with Colin's second assessment that it's Jurassic - the curved, long fossils were once thought to be scaphopods (Dentalium giganteum) but are now known to be Ditrupa-like serpulids (worm tubes). They don't look like crinoids, there's no segmentation...

The ribbed shell is a typical pectenid bivalve - ?Pseudopecten. And there are various oysters.

The block looks exactly like Lower Jurassic Staithes Sandstone Formation, common on the Yorkshire coast and some inland localities.  
It's definitely out of place in Swaledale where you'd certainly expect Carboniferous! Maybe dropped by someone (happens more often than you'd think), or just conceivably a glacial erratic - probably the wrong direction from the source though.
Tarquin
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