Yoda Posted June 25, 2020 Share Posted June 25, 2020 Hi All, So I recently got this slab with a Annularia and Laevinopteris The seller claims that the bumps on the leaf surface are the seeds. Is this correct? TBH I am not too fussed either way, as I would have probably bought this without this "feature". 1 MotM August 2023 - Eclectic Collector Link to comment Share on other sites More sharing options...
Strepsodus Posted June 25, 2020 Share Posted June 25, 2020 I think it is spelt Laveineopteris rather than Laevinopteris. Since Laveineopteris is a Pteridosperm, I believe it would produce seeds much larger, more like Trigonocarpus or Holcospermum. I’m not 100% sure though. The spots do look interesting, however. I wonder if they could be Microconchids? 2 Link to comment Share on other sites More sharing options...
Fossildude19 Posted June 25, 2020 Share Posted June 25, 2020 Microconchids may be correct. I see one that is not on/under the leaf. @fiddlehead @paleoflor 2 Tim - VETERAN SHALE SPLITTER VFOTM --- APRIL - 2015 __________________________________________________ "In every walk with nature one receives far more than he seeks." John Muir ~ ~ ~ ~ ><))))( *> About Me Link to comment Share on other sites More sharing options...
Yoda Posted June 25, 2020 Author Share Posted June 25, 2020 2 hours ago, Strepsodus said: I think it is spelt Laveineopteris rather than Laevinopteris. Since Laveineopteris is a Pteridosperm, I believe it would produce seeds much larger, more like Trigonocarpus or Holcospermum. I’m not 100% sure though. The spots do look interesting, however. I wonder if they could be Microconchids? Ah, that may be why nothing really came up when I did a Google search. Were the seeds borne on the leaves (as in modern day ferns) or specialised stalks (as in modern day flowering plants) ? But it's still an interesting specimen then 45 minutes ago, Fossildude19 said: Microconchids may be correct. I see one that is not on/under the leaf. Thanks for enlarging and pointing this one out MotM August 2023 - Eclectic Collector Link to comment Share on other sites More sharing options...
doushantuo Posted June 25, 2020 Share Posted June 25, 2020 Laveine is probably France's premier expert on Paleozoic flora Hence the name 1 Link to comment Share on other sites More sharing options...
Petalodus12 Posted June 25, 2020 Share Posted June 25, 2020 2 hours ago, Yoda said: Ah, that may be why nothing really came up when I did a Google search. Were the seeds borne on the leaves (as in modern day ferns) or specialised stalks (as in modern day flowering plants) ? But it's still an interesting specimen then Thanks for enlarging and pointing this one out Laveineopteris was a seed fern, so it would have had seeds that were on specialized parts rather than on the leaves. True ferns reproduce via spores that are located on the leaves 2 Link to comment Share on other sites More sharing options...
doushantuo Posted June 25, 2020 Share Posted June 25, 2020 microconchids on Devonian Drepanophycus(I): NB:(in THIS case)colonization while the plant was alive CarusoTomescu2012-1.pdf 2 Link to comment Share on other sites More sharing options...
Ruger9a Posted June 25, 2020 Share Posted June 25, 2020 8 hours ago, Yoda said: 3 hours ago, Yoda said: But it's still an interesting specimen then Yes indeed, it's a very nice specimen. Thanks for sharing. 1 Link to comment Share on other sites More sharing options...
Yoda Posted June 25, 2020 Author Share Posted June 25, 2020 Thanks everyone for the replies MotM August 2023 - Eclectic Collector Link to comment Share on other sites More sharing options...
paleoflor Posted June 26, 2020 Share Posted June 26, 2020 Think the spiral structures are indeed microconchids, but I wouldn't be able to confidently assign the pinnule to Laveineopteris. What Laveineopteris species have such a basal lobe? https://steurh.home.xs4all.nl/engdier/espirorb.html 1 Searching for green in the dark grey. Link to comment Share on other sites More sharing options...
Mark Kmiecik Posted June 26, 2020 Share Posted June 26, 2020 14 minutes ago, paleoflor said: Think the spiral structures are indeed microconchids, but I wouldn't be able to confidently assign the pinnule to Laveineopteris. What Laveineopteris species have such a basal lobe? https://steurh.home.xs4all.nl/engdier/espirorb.html It is more like the terminal pinnule of some Neuropteris species. Mark. Fossil hunting is easy -- they don't run away when you shoot at them! Link to comment Share on other sites More sharing options...
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