BobWill Posted March 25, 2018 Share Posted March 25, 2018 I had a new look at an old hash plate from the Finis Shale member of the Graham Formation in jack County Texas. It's full of all the Pennsylvanian Sub-period fossils I expected, even a couple of broken trilobite pieces, but this spiral shape caught my eye as I was passing it under a microscope. That's a mm scale in one picture and a human hair in the other. I don't know my micro fossils but I'm guessing it's some kind of foram. Any help with a name? Link to comment Share on other sites More sharing options...
DPS Ammonite Posted March 25, 2018 Share Posted March 25, 2018 Could it be an exterior mold of a spirorbis type worm tube? http://www.lakeneosho.org/Russia/Page78.html 1 My goal is to leave no stone or fossil unturned. See my Arizona Paleontology Guide link The best single resource for Arizona paleontology anywhere. Link to comment Share on other sites More sharing options...
BobWill Posted March 25, 2018 Author Share Posted March 25, 2018 34 minutes ago, DPS Ammonite said: Could it be a spirorbis type worm tube? http://www.lakeneosho.org/Russia/Page78.html Okay, as long as they can be in the range of around 100 microns. Link to comment Share on other sites More sharing options...
DPS Ammonite Posted March 25, 2018 Share Posted March 25, 2018 Can you see any rice-grain shaped fusilinids in the rock? Maybe it is a cross section of one of a small/ baby one. I recall that Pennsylvanian fusilinids are common in similar aged rocks in Central Texas near Lake Brownwood. My goal is to leave no stone or fossil unturned. See my Arizona Paleontology Guide link The best single resource for Arizona paleontology anywhere. Link to comment Share on other sites More sharing options...
Missourian Posted March 25, 2018 Share Posted March 25, 2018 It could be a smaller foram like Ammodiscus. 2 Context is critical. Link to comment Share on other sites More sharing options...
DPS Ammonite Posted March 25, 2018 Share Posted March 25, 2018 A reasonable match. Although there is no size mentioned for the forams. http://www.nhm2.uio.no/gorges/atlas/017_txt.htm My goal is to leave no stone or fossil unturned. See my Arizona Paleontology Guide link The best single resource for Arizona paleontology anywhere. Link to comment Share on other sites More sharing options...
doushantuo Posted March 25, 2018 Share Posted March 25, 2018 Might be Pseudoammodiscus priscus. 1 Link to comment Share on other sites More sharing options...
Miocene_Mason Posted March 25, 2018 Share Posted March 25, 2018 I’d sat definitely a foram. 4 hours ago, DPS Ammonite said: Could it be an exterior mold of a spirorbis type worm tube? http://www.lakeneosho.org/Russia/Page78.html No, they had yet to evolve. They evolved in the miocene, microconchs were thought to be Spirorbis until recently. 1 “...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...
BobWill Posted March 25, 2018 Author Share Posted March 25, 2018 10 hours ago, DPS Ammonite said: Can you see any rice-grain shaped fusilinids in the rock? Maybe it is a cross section of one of a small/ baby one. I recall that Pennsylvanian fusilinids are common in similar aged rocks in Central Texas near Lake Brownwood. I can't find any in this plate but they are common at the site. Link to comment Share on other sites More sharing options...
BobWill Posted March 27, 2018 Author Share Posted March 27, 2018 Dr. Ben Neuman from A&M Texarkana sent this image but I don't know the size. Link to comment Share on other sites More sharing options...
abyssunder Posted March 27, 2018 Share Posted March 27, 2018 Fusulinids are larger. pictures from here " We are not separate and independent entities, but like links in a chain, and we could not by any means be what we are without those who went before us and showed us the way. " Thomas Mann My Library Link to comment Share on other sites More sharing options...
doushantuo Posted March 27, 2018 Share Posted March 27, 2018 Most axial sections of fusulinids look like fig.4 and 7.The morphology of a fusulinid generally is not shown in oblique view,so I've included an example of that perspective in this figure, (uncoiling in later stages,btw).I hope this stereometrical view is helpful Your specimen seems to be without septa,and it doesn't look moravaminnid,parathuramminoid,or earlandoid. Personally I think Missourian is on the right track For whatever that's worth 2 Link to comment Share on other sites More sharing options...
abyssunder Posted March 27, 2018 Share Posted March 27, 2018 11 hours ago, BobWill said: Dr. Ben Neuman from A&M Texarkana sent this image but I don't know the size. Fusilina cylindrica or Fusulina cylindrica ? " We are not separate and independent entities, but like links in a chain, and we could not by any means be what we are without those who went before us and showed us the way. " Thomas Mann My Library Link to comment Share on other sites More sharing options...
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