Terry Dactyll Posted October 22, 2012 Share Posted October 22, 2012 itwasntme... Very nice specimens... I've trimmed a couple of my carb plant finds down into circles as it happens but they are ideal drawer specimens... I think photo number 5 (the white blob) could possibly be a coprolite... Cheers Steve... And Welcome if your a New Member... Link to comment Share on other sites More sharing options...
Missourian Posted October 22, 2012 Author Share Posted October 22, 2012 Cool drill cores. We need a dill core thread. Context is critical. Link to comment Share on other sites More sharing options...
Roanoker Posted October 23, 2012 Share Posted October 23, 2012 Cool drill cores. We need a dill core thread. Will any kind of pickle suffice? Link to comment Share on other sites More sharing options...
Auspex Posted October 23, 2012 Share Posted October 23, 2012 Will any kind of pickle suffice? "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...
Missourian Posted October 23, 2012 Author Share Posted October 23, 2012 *Cough* Some jerk spilled coffee on the keyboard *cough* Context is critical. Link to comment Share on other sites More sharing options...
docdutronc Posted October 26, 2012 Share Posted October 26, 2012 Hi my friends How to interpret these strange structures on this Cordaites leaf , predation or decomposition ??? Best regards Bruno Link to comment Share on other sites More sharing options...
Auspex Posted October 26, 2012 Share Posted October 26, 2012 To me, they look like post-depositional, pre-fossilization deformation. Given the piles of debris that must have accumulated in these coal swamps, it is a wonder that we do not see more of this; perhaps it represents a more violent incident? "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...
Missourian Posted October 26, 2012 Author Share Posted October 26, 2012 Are there small concretions in the rock? They could be distortion of the soft sediment around already-formed concretions during compaction. Context is critical. Link to comment Share on other sites More sharing options...
docdutronc Posted October 26, 2012 Share Posted October 26, 2012 quote : "They could be distortion of the soft sediment around already-formed concretions during compaction." the red colour shows mineral siderore like this one ,nodule or concretion under the leaf ???? Best regards Bruno Link to comment Share on other sites More sharing options...
RomanK Posted October 28, 2012 Share Posted October 28, 2012 My last find - Cordaites stem I have changed my ID after consultation with Bruno ("docdutronc"), that is the old arborescent fern stem. Excuse me for the wrong topic downloading. Roman http://s1143.photobu.../donbassfossil/ Link to comment Share on other sites More sharing options...
docdutronc Posted October 28, 2012 Share Posted October 28, 2012 Hi Roman Cordaites trunk or ferns trunk !!!!! difficult to say, but probably a basal part of the trunk, the furrows are rougher on your specimen, trunk fern or Cordaites???? , Old bark in any case, I think Cordaites are smoother ..... Best regards Bruno Link to comment Share on other sites More sharing options...
RomanK Posted October 28, 2012 Share Posted October 28, 2012 Thank you Bruno! Roman http://s1143.photobu.../donbassfossil/ Link to comment Share on other sites More sharing options...
Missourian Posted October 28, 2012 Author Share Posted October 28, 2012 On 10/26/2012 at 2:10 PM, docdutronc said: quote : "They could be distortion of the soft sediment around already-formed concretions during compaction." the red colour shows mineral siderore like this one ,nodule or concretion under the leaf ??? Yes. I'm thinking something like this: Context is critical. Link to comment Share on other sites More sharing options...
docdutronc Posted October 29, 2012 Share Posted October 29, 2012 Hi Missourian very good explanation !!!! best regards Bruno Link to comment Share on other sites More sharing options...
Terry Dactyll Posted October 29, 2012 Share Posted October 29, 2012 Roman... Thats a great new find... well done... I like Missourian's explanation as well... although I struggle with the uniformity aspect of the nodules... localised mineral levels would vary producing many different sizes of nodule.. (or) the nodules form around something of a regular size and so become a regular shape? Cheers Steve... And Welcome if your a New Member... Link to comment Share on other sites More sharing options...
docdutronc Posted October 29, 2012 Share Posted October 29, 2012 Quote : "although I struggle with the uniformity aspect of the nodules." The consistency of these nodules ,and its particularly uniformity that my eye was drawn to the field, it is for this reason that I collected this specimen, the combination of a Cordaites leaf and unknown form was very attractive, a single nodule I will not have it picked up ..... Best regards Bruno Link to comment Share on other sites More sharing options...
RomanK Posted October 30, 2012 Share Posted October 30, 2012 Quite interesting texture of the bark accompanied by Cordaites leaves. Roman http://s1143.photobu.../donbassfossil/ Link to comment Share on other sites More sharing options...
Missourian Posted December 25, 2012 Author Share Posted December 25, 2012 A close-up of the leaf bundle at the start of the thread: Closer still: Area of super close-up: Context is critical. Link to comment Share on other sites More sharing options...
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