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Showing results for tags 'peterborough member'.
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Oxford Clay, Peterborough Member, Jurassic, Callovian, Cambridgeshire. I found this while fossil hunting in too much heat yesterday. I'm intrigued by the row of circles. I thought possibly decapod ornamentation, or something worm related. Thoughts and suggestions greatly appreciated.
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- jurassic
- oxford clay
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Jurassic, Callovian, Oxford Clay, Peterborough Member, Yaxley, Cambridgeshire I've found a few of these recently, and been trying to puzzle them out. I had thought they might be crab claws. Today I found my largest and best preserved one so far. I can clearly see plates, but I haven't found plates on images of Jurassic crustaceans, including in Martill. What it more looks like is the diagram of Ophiuroids in the book, which is what @JamieLynn, suggested might be the case, due to the plates. I have found brittle star at the site before, but the preservation was very different, not at all pyratised. So I'm wondering if this is Ophiroid, crustacean or something else entirely. If crustacean I was wondering about Thalassinidea, because I find so many burrows. I've attached images of the fossil and images from this article for comparison: https://www.cambridge.org/core/journals/journal-of-paleontology/article/brittle-stars-from-the-british-oxford-clay-unexpected-ophiuroid-diversity-on-jurassic-sublittoral-mud-bottoms/8B34E184DFCF1CEEE275194CE2498B17 Any help would be greatly appreciated. The ends I find particularly fascinating.
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- callovian
- crustaceans
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Jurassic, Callovian, Oxford clay, Peterborough Member, near Yaxley in Cambridgeshire. These are fragments I've picked up over time, wondering if they have bone texture or not. The bits I have that are unequivocally bone have better indicators. Opinions would be very welcome. The first I keep in my miscellaneous pile. These are all the same piece of rock. With something so small, even if it is bone, is it something that is potentially identifiable?
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I got the chance to go to the Oxford Clay twice over the last few days. I'm always looking for echinoderms at this site, and I prefer this one in winter when the vegetation has died back and I can spot lots of small, delicate detail. These are some if my favourite finds from the last few days.
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I'm trying to determine if these are echinoid. I found these two on an Oxford Clay trip yesterday, Jurassic, Callovian, Peterborough Member, near Yaxley in Cambridgeshire. The first is, I think, a partial echinoid spine. My only doubts are because it's quite different from the others I've found at the site, it's a very different pattern. I would appreciate another opinion. The second has completely confused me. It looks black, so I thought it was pyrite, but when I photographed it, it's clearly a completely different material. It's a very odd shape, like a tiny snowman, and the only thing I thought it might be is a mamelon from an echinoid tubercle. I don't have anything else like this, and the different material puzzles me. I would really appreciate opinions on this.
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I will do these over a few posts. The site is Jurassic Oxford Clay, Peterborough Member, c.163 ma at Yaxley in Cambridgeshire. Any help would be greatly appreciated! The scale is in mm. The first I thought was Genicularia Vertebralis, but it looks a bit different from the others I've found, and has three distinct lines at the bottom of an unusually straight column.
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- invertebrates
- jurassic
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I really feel like I should recognise these, but just don't. I wondered if one was a bivalve shell, but it's unlike any I have found, and the other perhaps an impression of an ammonite. Any help appreciated. Jurassic, Oxford Clay, Peterborough member. @DE&i
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- jurassic
- oxford clay
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I still continue to find this particular type of fossil. But can't quite seem to take a description of the find beyond (probable fish element). Found from the Peterborough Member (Callovian, Middle Jurassic) of the Oxford Clay. more commonly known as the Lower Oxford Clay. Also just to say other identical finds to this one seem to have the same appearance, shape, size and colouration. And are quite sporadic when found. All suggestions welcome. Scale bar is in millimetres.
- 10 replies
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- jurassic fossil fish
- middle jurassic
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