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Post by ammocarbsteve on Feb 25, 2011 4:52:56 GMT -5
The Calamites thread was a good one... Some stunning material turned up....I thought I would start a Lepidodendron one to see what fossils people have from this tree... Unfortunately I dont have a reconsruction.... Interestingly the bark from this tree changes at the base possibly when it reaches maturity... I found a fossil stump that shows this transition from 'basal' to typical Lepidodendron 'leafscars'... Attachments:
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Post by ammocarbsteve on Feb 25, 2011 4:54:17 GMT -5
Roughly where the crack is you can see the transformation of the trunk from basal to typical Lepidodendron... Attachments:
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Post by ammocarbsteve on Feb 25, 2011 4:58:33 GMT -5
Heres a stump I managed to save with the help of a quarryman and a digger lol... What a tradgedy to be reburied and lost.. My best stump I donated to Lapworth maybe 4 years back, hopefully to go on display in the entrance hall although last I heard they had health & safety issues and were looking to bolt it down.... Attachments:
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Post by paleoflor on Feb 25, 2011 7:42:35 GMT -5
Nice topic! Things are very busy at the laboratory at the moment, so I do not have much time to spend here, but I'll at least add a nice reconstruction. It actually features a range of lycopods, including the generally known Sigillaria and Lepidodendron, as well as more rare forms such as Diaphorodendron, Lepidophloios, Anabathra, and Synchysidendron. From Bateman et al. (1992). Steve, really amazing stumps! You really need to be able to search in in-situ material to find such beauties. They are very rare (especially larger sized ones) on the spoil tips. Nevertheless, I'll try and post some interesting fossil specimens also... Attachments:
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Post by paleoflor on Feb 25, 2011 7:48:49 GMT -5
Lepidodendron worthenii Lesquereux 1866 Laura-Vereeniging spoil tip near Eygelshoven, Zuid Limburg, The Netherlands Carboniferous: Westphalian AB / Langsettian-Duckmantian Attachments:
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Post by ammocarbsteve on Feb 25, 2011 14:02:59 GMT -5
Tim... Thats a really nice cast...I try to save what I can when I can, very often its just photos as they are far too large to collect... The biggest stump I spotted on the spoil heap is a Sigillaria about 3 foot across pictured below...I'll add a few photos here and there to rather than banging them all on at once.... Attachments:
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Post by ammocarbsteve on Feb 25, 2011 14:05:34 GMT -5
I like this image as it shows 2 consecutive forestations of the same area.... the lower stump is buried dies and a cast made of its base with the 'seat earth' or fossil soil in between containing poorly preserved roots then another tree growing from the seat earth is buried and a cast made of that... hopefully in that order... Attachments:
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Post by paleoflor on Feb 26, 2011 9:04:24 GMT -5
Stigmaria [lycopsid rooting system] Piesberg quarry, Osnabruck, Germany [displayed at Museum am Scholerberg] Carboniferous: Westphalian CD (Bolsovian-Asturian) I really like those in-situ photo's Steve! Something that can only be found at a handful of localities I collected - such as the Piesberg. Attachments:
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Post by paleoflor on Feb 26, 2011 9:06:58 GMT -5
And another one, same locality and age. This one is displayed at the "Bergbau Museum" in Bochum (Germany) Attachments:
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Post by paleoflor on Feb 26, 2011 9:09:18 GMT -5
Oh, and yes: I went to quite a few German museums (well, the ones that display their fantastic plant fossils), ha-ha...
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Post by ammocarbsteve on Feb 27, 2011 14:16:23 GMT -5
Tim... Beautiful... They have a stump in Manchester Museum as well but I have never took a photo of it... I havent got much in the way of decent bark specimens so you can show me some good stuff ... This is one of my favourates... Attachments:
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Post by ammocarbsteve on Feb 27, 2011 14:18:05 GMT -5
And some basal bark... Attachments:
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Post by paleoflor on Mar 4, 2011 13:47:00 GMT -5
OK. It has been a while since my last visit here (busy at university) but I will make some photographs of my Lepidodendron and Sigillaria bark in the near future. Nice L. aculeatum btw...
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Post by ammocarbsteve on Mar 8, 2011 4:10:49 GMT -5
Tim... look forward to seeing them... I dont know if you noticed this on TFF I posted, it was a gift from a friend from another opencast... Stigmaria root... When I saw the core preservation I was going to cut a piece off and polish it to see if I could get some details... but as it turns out my friend managed to get me another small piece to save ruining my bit... Attachments:
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Post by ammocarbsteve on Mar 8, 2011 4:15:38 GMT -5
After we undertook the polishing, photographing and a few emails here and there we found out from the NHM that some calcite infilling has caused the petrifaction and shrinkage has given the core the segmented appearance. I think Hans is putting these photos on his website maybe...Take a look... Attachments:
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