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Post by pleecan (Peter Lee) on Feb 10, 2013 21:37:46 GMT -5
Hi Joe: Any ideas if this is related to Cooksonia? Black carbonized film preservation. 32mm long  |
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Post by pleecan (Peter Lee) on Feb 11, 2013 20:37:32 GMT -5
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Post by pleecan (Peter Lee) on Feb 12, 2013 11:36:28 GMT -5
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Post by pleecan (Peter Lee) on Feb 12, 2013 11:37:44 GMT -5
The first 2 close up ... can you see a sponge spicule? Looks like a cross.
PL
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Post by pleecan (Peter Lee) on Feb 12, 2013 13:21:52 GMT -5
Dr Graham Young thought it looked like a sponge so did Dr. Samuel Zamora Iranzo.
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Post by Joe Botting on Feb 17, 2013 12:24:54 GMT -5
Hi Peter,
Sorry for the delay - still no internet, and currently in Shropshire finishing off the Nat Geo grant. This does look rather plausibly spongey, I've got to say. That does look like a cross-shaped spicule, and longitudinal monaxons are present in several groups. I'm not sure about the group it would fit into at the moment - that would need a closer look, along with confirming that it really is a sponge... but the hexactine-like structure appears to be biminerallic (may be secondary recrystallisation, of course), and the monaxons suggest something around the base of the protomonaxonids. That's pure speculation at this stage, though. Certainly an interesting thing, though.
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Post by pleecan (Peter Lee) on Feb 17, 2013 22:03:40 GMT -5
Thanks so much Joe for your response! The Bertie Lagerstatten has still many secrets.... it is the most interesting deposit in Ontario that is accessible to the public...
PL
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