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Found 1 result

  1. Silurian Plant, Bertie Formation

    Hello, here is a plant fossil from the Bertie Formation, Locality Fiddlers Green; I bought it some time ago. It was labeled Cooksonia, but I have doubts. Since Cooksonia was a tiny plant, the specimen is rather large (scale = matchstick = 45 mm). The supposed sporangium is 9 mm wide, the stem 4 - 5 mm. I also miss any defining features of tracheophytes (no tracheids). There seem to be some inhomogenities or structures in the area of the widest circumference of the supposed sporangium, but possibly this is only the texture of the sediment. So I question whether this is a tracheophyte at all; possibly algae? What do the specialists say who are experienced with material from the Bertie Formation? I know there was a discussion about similar stuff in this forum, but my specimen looks something else: http://www.google.de/imgres?q=Bertie+Formation&hl=de&tbm=isch&tbnid=djMOJqpiUXSCAM:&imgrefurl=http://www.thefossilforum.com/index.php/topic/30693-fossil-plants-from-the-bertie-formation/&docid=diABCSiJrM3ybM&imgurl=http://www.thefossilforum.com/uploads/monthly_07_2012/post-1408-0-70995100-1342307334_thumb.jpg&w=200&h=161&ei=kKqFULiXNJDKsgaUgoGoDg&zoom=1&iact=hc&vpx=347&vpy=333&dur=1672&hovh=128&hovw=160&tx=109&ty=59&sig=113038706526856147472&page=3&tbnh=128&tbnw=160&start=54&ndsp=28&ved=1t:429,r:18,s:54,i:304&biw=1246&bih=857 I would be happy if it's really Cooksonia ... but I cannot believe it so far. Thanks, araucaria1959
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