Jones1rocks Posted June 4, 2017 Share Posted June 4, 2017 I know I've seen this type of fossil in images--sometime and somewhere, but I can't find them any more. Does anyone have an ID for this Mazon Creek fossil? The concretion measures 2-5/16 x 1-1/4". Link to comment Share on other sites More sharing options...
doushantuo Posted June 4, 2017 Share Posted June 4, 2017 I'm tempted to think cephalopod(molluscan),so an animal,not a plant The hemispherical/elliptical repetive patterns are (remnants of) the chambers the animal lived in,in succesive stages. 2 Link to comment Share on other sites More sharing options...
doushantuo Posted June 4, 2017 Share Posted June 4, 2017 You were thinking Annularia,maybe? 1 Link to comment Share on other sites More sharing options...
doushantuo Posted June 4, 2017 Share Posted June 4, 2017 The structure in the last pic reminded me of the central structure of Archiacoceras 2 Link to comment Share on other sites More sharing options...
Fossildude19 Posted June 4, 2017 Share Posted June 4, 2017 Asterophyllites equisetiformis. Very similar to this picture, in Rockaholic's gallery. 6 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...
Jones1rocks Posted June 4, 2017 Author Share Posted June 4, 2017 Thank you, Fossildude19! That's it! Link to comment Share on other sites More sharing options...
RCFossils Posted June 5, 2017 Share Posted June 5, 2017 I agree with Fossildude19. You have a neat preservation of Asterophyllites equisetiformis. 1 Link to comment Share on other sites More sharing options...
Jones1rocks Posted June 6, 2017 Author Share Posted June 6, 2017 Thank you for the verification! After looking at it and realizing the interesting cross section revealed by the split, I'm so happy to have it in my collection. Link to comment Share on other sites More sharing options...
Carl Posted June 7, 2017 Share Posted June 7, 2017 What a wonderful specimen! I love the way it was preserved in 3D! Link to comment Share on other sites More sharing options...
Nimravis Posted June 8, 2017 Share Posted June 8, 2017 It is exactly what Fossildude19 said- Asterophyllites, one of my favorites from the Pits. Link to comment Share on other sites More sharing options...
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