docdutronc Posted August 2, 2009 Share Posted August 2, 2009 some artisia , the size of the black specimen is 15 centimeters..... Link to comment Share on other sites More sharing options...
Auspex Posted August 2, 2009 Share Posted August 2, 2009 Artisia are stem structures of cordaites? The black one is wonderful! "There has been an alarming increase in the number of things I know nothing about." - Ashleigh Ellwood Brilliant “Try to learn something about everything and everything about something.” - Thomas Henry Huxley >Paleontology is an evolving science. >May your wonders never cease! Link to comment Share on other sites More sharing options...
docdutronc Posted August 2, 2009 Author Share Posted August 2, 2009 Artisia are stem structures of cordaites?The black one is wonderful! Yes the internal structure of trunks and branches cordaites, a kind of marrow of those axes......With my friend Hervé, we found a sample of almost 30 cm long conserved in a gray sandstone, I put a picture soon.... Link to comment Share on other sites More sharing options...
docdutronc Posted August 2, 2009 Author Share Posted August 2, 2009 Yes the internal structure of trunks and branches cordaites, a kind of marrow of those axes......With my friend Hervé, we found a sample of almost 30 cm long conserved in a gray sandstone, I put a picture soon.... Here is an exceptional specimen of the genus artisia ,from Lievin aera ....,private collection Hervé Duquesne Link to comment Share on other sites More sharing options...
Auspex Posted August 2, 2009 Share Posted August 2, 2009 Here is an exceptional specimen of the genus artisia ,from Lievin aera ....,private collection Hervé Duquesne What a fossil! So, it is the pith of a stem; I know well that stigmaria has a pith also. "There has been an alarming increase in the number of things I know nothing about." - Ashleigh Ellwood Brilliant “Try to learn something about everything and everything about something.” - Thomas Henry Huxley >Paleontology is an evolving science. >May your wonders never cease! Link to comment Share on other sites More sharing options...
docdutronc Posted August 2, 2009 Author Share Posted August 2, 2009 What a fossil!So, it is the pith of a stem; I know well that stigmaria has a pith also. Yes like that, but it is rarely preserved in the French Carboniferous .... best regards Bruno Link to comment Share on other sites More sharing options...
Terry Dactyll Posted August 2, 2009 Share Posted August 2, 2009 Bruno.... Very Nice...... I had a tree trunk dissintegrate on me, the rock it was cast in was unstable, but the pith remained rock.... I will post a photo for you to compare sometime.... Cheers Steve... And Welcome if your a New Member... Link to comment Share on other sites More sharing options...
Shamalama Posted August 2, 2009 Share Posted August 2, 2009 Bruno, Seeing your specimens always makes me take a second look at what I find and gives me more questions to ask. I quite often find limb casts in St. Clair with no clear bark pattern or segments which makes it hard to say if it's one thing or another. I end up leaving them behind because they are unremarkable and unidentifiable. Could they be pith casts? The next time I find one I'll post a picture for you. -Dave __________________________________________________ Geologists on the whole are inconsistent drivers. When a roadcut presents itself, they tend to lurch and weave. To them, the roadcut is a portal, a fragment of a regional story, a proscenium arch that leads their imaginations into the earth and through the surrounding terrain. - John McPheeIf I'm going to drive safely, I can't do geology. - John McPheeCheck out my Blog for more fossils I've found: http://viewsofthemahantango.blogspot.com/ Link to comment Share on other sites More sharing options...
Terry Dactyll Posted August 3, 2009 Share Posted August 3, 2009 Bruno.... Ive had a look at my Artisia specimen.... Its correctly labelled up.... so it looks like youve already seen it lolol.... me and my memory .... .....although I must of had a good time loosing it hey.... Cheers Steve... And Welcome if your a New Member... Link to comment Share on other sites More sharing options...
Guest guppy-boy Posted August 4, 2009 Share Posted August 4, 2009 nice !! Link to comment Share on other sites More sharing options...
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