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Fossil fish fin?


MarcGrey1999

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I found this fossil yesterday near Whitby at Runswick Bay. Ammonites and belemnites are common here in the Jurassic cliffs, but I also found this. I am unsure as to whether it may be part of a fish or something else entirely- can anyone help? 

BB550610-D9EA-4903-A120-B71B1CF9BFFE.jpeg

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Reminds me of a Ginkgo leaf, not sure if that is a possibility in the area where you searched for fossils. 
 

Interested in all things paleontology, geology, zoology, evolution, natural history and science!
Professional exotic pet keeper, huge fantasy geek, explorer of the microfossil realm, member of the BVP (Belgian Association for Paleontology), Volunteer prepper at Oertijdmuseum Boxtel.  

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It's a piece of a Phylloceras heterophyllum (ammonite). They can be very large and are often found compressed in the shale around there.

 

(From this excellent blog https://andysfossils.com/2014/10/) (Not all of them show the undulating secondary ribs.)

 phylloceras2_s.jpg

 

 

Edited by TqB
  • I found this Informative 5

Tarquin

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This is clearer perhaps - Phylloceras heterophyllum, 3D in a nodule, from near Whitby. (Sadly, it won't be complete - just the living chamber - so it lives in my garden. :D)

 

IMG_3302.thumb.jpeg.713afaf6b5655b1e7cb7810a6efe855e.jpeg

Edited by TqB
  • I found this Informative 2

Tarquin

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