docdutronc Posted November 24, 2008 Share Posted November 24, 2008 This cordaites leaf base is wide of 4 centimeters,it 's enormous ,the size could come up to a lenght of two meters and more .....,from south Belledonne near Grenoble Aphlebia is an sexual organ of pecopterid ferns who are growed up at the armpit of rachis ferns ,they are like feathers.....this is a fossil who is difficult to see ....,no relief .... Link to comment Share on other sites More sharing options...
mommabetts Posted November 24, 2008 Share Posted November 24, 2008 This cordaites leaf base is wide of 4 centimeters,it 's enormous ,the size could come up to a lenght of two meters and more .....,from south Belledonne near Grenoble Aphlebia is an sexual organ of pecopterid ferns who are growed up at the armpit of rachis ferns ,they are like feathers.....this is a fossil who is difficult to see ....,no relief .... Very interesting, so are you saying that without these, the pecopterid ferns could not reproduce? Link to comment Share on other sites More sharing options...
docdutronc Posted November 24, 2008 Author Share Posted November 24, 2008 Very interesting, so are you saying that without these, the pecopterid ferns could not reproduce? http://www.xs4all.nl/~steurh/engvar/eaphleb.html look the web site of hans steur ,he shows an isolate aphlebia .... Link to comment Share on other sites More sharing options...
mommabetts Posted November 24, 2008 Share Posted November 24, 2008 http://www.xs4all.nl/~steurh/engvar/eaphleb.htmllook the web site of hans steur ,he shows an isolate aphlebia .... OK, I got it now, thanks for posting web site. Link to comment Share on other sites More sharing options...
RomanK Posted November 25, 2008 Share Posted November 25, 2008 This cordaites leaf base is wide of 4 centimeters,it 's enormous ,the size could come up to a lenght of two meters and more .....,from south Belledonne near Grenoble Aphlebia is an sexual organ of pecopterid ferns who are growed up at the armpit of rachis ferns ,they are like feathers.....this is a fossil who is difficult to see ....,no relief .... Bruno, do you think these sp's are cordaites leaves as well? Roman http://s1143.photobu.../donbassfossil/ Link to comment Share on other sites More sharing options...
docdutronc Posted November 25, 2008 Author Share Posted November 25, 2008 Bruno, do you think these sp's are cordaites leaves as well? Hi Roman I 'm not sure but it could be Aulacopteris ,that is rachis of pteridospermophyta ,cordaites leaves have not relief , these remains of plants are too fleshy ,rachis could produce straith parallel line ... best regards bruno Link to comment Share on other sites More sharing options...
docdutronc Posted November 25, 2008 Author Share Posted November 25, 2008 Hi Roman I 'm not sure but it could be Aulacopteris ,that is rachis of pteridospermophyta ,cordaites leaves have not relief , these remains of plants are too fleshy ,rachis could produce straith parallel line ... best regards bruno I found a picture of aphlebia original specimen described by Gutbier in Zwickau ( Saxony ,Germany ) Link to comment Share on other sites More sharing options...
docdutronc Posted November 25, 2008 Author Share Posted November 25, 2008 Hi Roman I 'm not sure but it could be Aulacopteris ,that is rachis of pteridospermophyta ,cordaites leaves have not relief , these remains of plants are too fleshy ,rachis could produce straith parallel line ... best regards bruno look Roman ,it is Aulacopteris ,rachis ferns with a cyclopteris leaf attached ,this is rachis of neuropteris tenuifolia ...,it is similar to your pics a picture of cordaites leaves ..... Link to comment Share on other sites More sharing options...
Peter T Posted November 25, 2008 Share Posted November 25, 2008 Really stunning Bruno! Link to comment Share on other sites More sharing options...
RomanK Posted November 26, 2008 Share Posted November 26, 2008 look Roman ,it is Aulacopteris ,rachis ferns with a cyclopteris leaf attached ,this is rachis of neuropteris tenuifolia ...,it is similar to your pics a picture of cordaites leaves ..... Bruno, what about this picture? and some other with ribbing? Roman http://s1143.photobu.../donbassfossil/ Link to comment Share on other sites More sharing options...
docdutronc Posted November 26, 2008 Author Share Posted November 26, 2008 Bruno, what about this picture? and some other with ribbing? Evidently these leaves are obtuse ,they are cordaites leaves ..... best regards bruno Link to comment Share on other sites More sharing options...
docdutronc Posted November 27, 2008 Author Share Posted November 27, 2008 Evidently these leaves are obtuse ,they are cordaites leaves .....best regards bruno Hi Roman I look to your pictures,in red that is rachis ferns ,in yellow these are pinnules ? Link to comment Share on other sites More sharing options...
docdutronc Posted November 29, 2008 Author Share Posted November 29, 2008 Hi Roman I look to your pictures,in red that is rachis ferns ,in yellow these are pinnules ? Aulacopteris ,rachis ferns from Lievin Link to comment Share on other sites More sharing options...
docdutronc Posted November 29, 2008 Author Share Posted November 29, 2008 Aulacopteris ,rachis ferns from Lievin cordaites leaves from Lievin Link to comment Share on other sites More sharing options...
docdutronc Posted November 29, 2008 Author Share Posted November 29, 2008 cordaites leaves from Lievin Pit cast of Cordaites Artisia from Lievin Link to comment Share on other sites More sharing options...
mommabetts Posted November 30, 2008 Share Posted November 30, 2008 Absolutely beautiful specimens !!!!!!!!!!!!!!!!! Link to comment Share on other sites More sharing options...
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