Odd Carboniferous Bark... Interesting Pattern! Need Id!

[pecopteris]

Interesting bark... But I have no idea what it is... Any suggestions?

[Terry Dactyll]

That is unusual... they almost look like seeds attached to the outer surface of a pod of some description....

[araucaria1959]

Very interesting. How large is it? (A picture of the complete stone may help too).

araucaria1959

[Auspex]

I could picture it as an impression, in negative relief. What does it call to mind if the bumps were actually pits?

Strobus scars, maybe?

[pecopteris]

Very interesting. How large is it? (A picture of the complete stone may help too).

araucaria1959

uplaoding that now

[pecopteris]

Here is full photo with measure.

[Coco]

Grrrrrrr ! I can't clic on the pic ! "Sorry, you don't have permission for that!".

Coco

[piranha]

Looks similar to some examples of Lepidodendron obovatum.

[Auspex]

Grrrrrrr ! I can't clic on the pic ! "Sorry, you don't have permission for that!".

Coco

Same here. It must be linked from a PM or a private gallery.

[araucaria1959]

I've the same problem and cannot enlarge the second pic.

araucaria1959

[pecopteris]

ok, ill see if I cant re-post the pic. Sorry everyone!

If that does not work (above pic), here is the link to the picture on my flickr:

[araucaria1959]

Here is a similar specimen, though badly preserved, from the pennsylvanian (upper westphalian) from Germany (Querschied, Saar area). Length of the specimen about 13 cm.

I have no definitive ID of that except that I think it has to do something with arborescent lycophytes, but it shows that the structure we are discussing here is a sort of steinkern below a thin layer of dense carbonaceous matter. Maybe it's a sort of knorria-type preservation? I don't know whether my specimen is a fragment of a lepidophyt stem/branch or the axis of a cone after the loss of the sporophylls.

But maybe this helps to understand the nature of the original specimen of this thread for those more experienced with carboniferous trees.

araucaria1959

[docdutronc]

Hi my friends

You are right Araucaria1959 , very similar ....

I think your specimen shows a decortication of Lepidodendron morph Aspidiaria , sometimes these leaf-cushions can be removed and show the imprint of the outer bark. You can see this phenomen on my specimen , the lozenge shape so characteristic that remained adherent to the bark in the inferior part of this sample

The morph Knorria is also a decortication but it is deeper ,in this case ,you can see only a vertical furrow ,the external shape of the leaf-cushions is not drawed ....

Best regards

Bruno

Edited January 7, 2013 by docdutronc

[araucaria1959]

Hello Bruno,

thank you very much - I think that's the answer for both specimens.

araucaria1959