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Post by pleecan (Peter Lee) on Jan 23, 2013 21:56:20 GMT -5
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Post by Joe Botting on Jan 24, 2013 8:42:59 GMT -5
Thank you - glad you liked it. But who do you believe..? ;-)
Sorry I'm not around much at the moment - trying to find somewhere to live, and have just sent off application forms to rent a flat in Llandrindod. That'll be fun. :-)
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Post by ammocarbsteve on Jan 24, 2013 9:51:01 GMT -5
Peter.... Thanks for the links....
Joe.... You'll never get anything done surrounded by fossil outcrops...
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Post by pleecan (Peter Lee) on Jan 24, 2013 22:42:23 GMT -5
The Lucy and Joe story is better sounding of course... even though Samuel is also a friend on FB Good Luck on your hunt for a flat... are you moving back to the UK? Steve: You are welcome.
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Post by Joe Botting on Jan 25, 2013 10:13:01 GMT -5
Steve, that's kind-of the idea. ;D The views are fabulous though, and we should be able to move in on Friday - woohoo. Peter, I can also happily report that it's all entirely amicable - Samuel's also a friend of ours, and this is how differences of opinion should get resolved. We think they've made a big mistake, but they of course think that we have. We'll just have to get some even better specimens and prove we're right beyond any doubt... and guess what? The site is in Llandrindod...
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Post by pleecan (Peter Lee) on Feb 10, 2013 10:10:08 GMT -5
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Post by pleecan (Peter Lee) on Feb 16, 2013 7:43:03 GMT -5
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Post by Joe Botting on Feb 17, 2013 12:28:23 GMT -5
Thanks for posting those, Peter - they're really important sites, and well worth publicizing.
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Post by pleecan (Peter Lee) on Feb 17, 2013 22:05:04 GMT -5
You are welcome Joe!
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Post by pleecan (Peter Lee) on Feb 22, 2013 18:07:42 GMT -5
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Post by Joe Botting on Feb 25, 2013 8:16:46 GMT -5
...and this is why I take molecular clocks with a big pinch of salt and maybe some msg as well. ;D
Of course, it's hard to prove that it's wrong, but there are a lot of things there that seem to me a little bit... unexpected.
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Post by pleecan (Peter Lee) on Feb 25, 2013 12:54:59 GMT -5
That paper was interesting.. but way above my head... the interesting bit about terrestrial evolution prior to Silurian... my very limited understanding was that land plants started in the late Silurian but then in the Potsdam formation here in Ontario... they found terestrial arthropod foot prints in Cambrian.... cool.
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Post by Joe Botting on Feb 26, 2013 10:40:26 GMT -5
As far as I know, the only good evidence for pre-Silurian land plants is in spores from the Late Ordovician of Oman... there have been reports of bryophytes in the Cambrian of China, but to be honest, they're pretty flaky. There's also a big difference between arthropods that live in the sea and occasionally go out on land to forage (leaving footprints along the way), and truly land-adapted creatures... even though being able to survive even relatively brief exposure is pretty good going. My worry is that the evidence here is entirely molecular, and I've seen the results that gives for groups that I do know about - i.e. sponges. It's still hard to get over a missing 300-million-year gap in the fossil record of a mineralised organism... Basically, I see this sort of work as providing hypotheses - not as proving anything. If it predicts finding certain fossils of a certain age, and then they turn up, then great. If, however, they persistently don't turn up...
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Post by pleecan (Peter Lee) on Feb 27, 2013 19:02:55 GMT -5
Thanks Joe on your insights
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Post by pleecan (Peter Lee) on Feb 27, 2013 19:06:47 GMT -5
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