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Post by pleecan (Peter Lee) on Feb 25, 2011 9:16:52 GMT -5
Good new Joe... got this email this morning: "Hi Peter,
I just saw your second email and have passed it on to all interested, will get back to you if I get any further response.
Best wishes,
Luanne Faulknall
Earth Sciences ID Officer
Centre for UK Biodiversity
Natural History Museum
Cromwell Road, London
SW7 5BD, UK."
Saga continues..... Thanks for your insights Joe! Peter
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Post by pleecan (Peter Lee) on Feb 25, 2011 11:08:36 GMT -5
I am just thinking out loud... could this be a Cambrian Radiolaria??? PL
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Post by reighan on Feb 25, 2011 11:12:12 GMT -5
I love these mystery threads. :-) They're fun and, for a beginner, extremely educational. Reighan
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Post by pleecan (Peter Lee) on Feb 25, 2011 14:07:45 GMT -5
More fun than a mystery novel....
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Post by pleecan (Peter Lee) on Mar 27, 2011 8:51:31 GMT -5
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Post by pleecan (Peter Lee) on Mar 29, 2011 20:56:55 GMT -5
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Post by pleecan (Peter Lee) on Jun 15, 2011 20:21:23 GMT -5
Microstructures can be seen... center body of the fossil...
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Post by pleecan (Peter Lee) on Mar 18, 2012 15:08:42 GMT -5
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Post by pleecan (Peter Lee) on Mar 18, 2012 21:03:59 GMT -5
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Post by pleecan (Peter Lee) on Mar 18, 2012 21:08:02 GMT -5
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Post by pleecan (Peter Lee) on Mar 19, 2012 20:01:48 GMT -5
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Post by pleecan (Peter Lee) on Mar 19, 2012 21:17:42 GMT -5
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Post by Joe Botting on Mar 19, 2012 22:30:19 GMT -5
I don't think anyone is arguing it's random chance, but I still see nothing that makes it not a dendrite. Yes, there are a few little needle-shaped things, but they look to me like crystals (e.g. gypsum laths, which result from pyritse weathering). You notice also the way it goes over the irregular breakage surface? This implies it wasn't a thin layer of soft tissue on a bedding plane, but has permeated the rock - that could have happened as a result of weathering, but it means you're not going to see any original fine structure in here, because the colouring is a chemical artefact. Therefore, unless you have extremely convincing evidence (I'm afraid you don't), you have to assume that any tiny 'structures' you're seeing aren't really there... I still think it could, potentially, be something like an alga, but there's just no good evidence for it, and a dendrite has to be your null hypothesis. If you had several there might be something to go on, but with just the one, and that merely an iron-stained mark? No-one would accept that for publication, and I'm afraid they'd be right not to.
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Post by pleecan (Peter Lee) on Mar 20, 2012 5:00:14 GMT -5
Thanks Joe for your insights.... at least the core structures are now better resolved.
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Post by pleecan (Peter Lee) on Mar 20, 2012 14:34:11 GMT -5
"Dear Peter, Thank you for your email. However, I'm afraid that we don't have any more to add to Dr Botting's comments on his forum. Yours, Luanne Faulknall Earth Sciences Identification Officer Angela Marmont Centre for UK Biodiversity (AMC) Natural History Museum Cromwell Road, London SW7 5BD, UK."
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