Shamalama Posted November 21, 2017 Share Posted November 21, 2017 As I am going through my boxes of findings from the Llewellyn formation at St. Clair, PA, I came across some more interesting plates. Normally I would call this short, rounded foliage "Sphenopteris" but some research with the PA Geological Survey's book "Fossil Plants from the Anthracite Coal Fields of Eastern Pennsylvania", General Geology Report 72, 1982, John Oleksyshyn, I'm thinking these might be more accurately called Mariopteris cf. lobata. Here is Figure 14 from the book that illustrates (plates A,B) what I think is a close match to what I have. The book also states that the specimens that are used for the plates come from St. Clair so it is known to occur there. Thoughts? -Dave __________________________________________________ Geologists on the whole are inconsistent drivers. When a roadcut presents itself, they tend to lurch and weave. To them, the roadcut is a portal, a fragment of a regional story, a proscenium arch that leads their imaginations into the earth and through the surrounding terrain. - John McPheeIf I'm going to drive safely, I can't do geology. - John McPheeCheck out my Blog for more fossils I've found: http://viewsofthemahantango.blogspot.com/ Link to comment Share on other sites More sharing options...
Miocene_Mason Posted November 22, 2017 Share Posted November 22, 2017 I feel like I remember a past thread on this a while back.. sorry I can’t help but I’ll be watching what answers others come up with “...whilst this planet has gone cycling on according to the fixed law of gravity, from so simple a beginning endless forms most beautiful and most wonderful have been and are being evolved.” ~ Charles Darwin Happy hunting, Mason Link to comment Share on other sites More sharing options...
Fossildude19 Posted November 22, 2017 Share Posted November 22, 2017 @fiddlehead @paleoflor 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...
Jeffrey P Posted November 22, 2017 Share Posted November 22, 2017 I have what I think is a very similar specimen preserved in pyrite that is on display in my Carboniferous gallery which I also ID'd as Mariopteris lobata. I was using the same source book as you which may account for this. Link to comment Share on other sites More sharing options...
Shamalama Posted November 22, 2017 Author Share Posted November 22, 2017 12 hours ago, Jeffrey P said: I have what I think is a very similar specimen preserved in pyrite that is on display in my Carboniferous gallery which I also ID'd as Mariopteris lobata. I was using the same source book as you which may account for this. Yes, that looks very similar. Thanks Jeff! -Dave __________________________________________________ Geologists on the whole are inconsistent drivers. When a roadcut presents itself, they tend to lurch and weave. To them, the roadcut is a portal, a fragment of a regional story, a proscenium arch that leads their imaginations into the earth and through the surrounding terrain. - John McPheeIf I'm going to drive safely, I can't do geology. - John McPheeCheck out my Blog for more fossils I've found: http://viewsofthemahantango.blogspot.com/ Link to comment Share on other sites More sharing options...
paleoflor Posted November 29, 2017 Share Posted November 29, 2017 Not familiar with this species, but Gastaldo and Boersma (1983b) transferred Mariopteris lobata White 1943 to Eusphenopteris (see also Gastaldo and Boersma 1983a). Searching for green in the dark grey. Link to comment Share on other sites More sharing options...
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