Captain America Posted September 8, 2020 Share Posted September 8, 2020 Found in Pennsylvanian layers; shale, mudstone, lignite, in Illinois; petrified wood nearby. Is this dinosaur poop? Link to comment Share on other sites More sharing options...
Kane Posted September 8, 2020 Share Posted September 8, 2020 First dinosaurs appeared in the Triassic, if I recall correctly. 4 ...How to Philosophize with a Hammer Link to comment Share on other sites More sharing options...
grandpa Posted September 8, 2020 Share Posted September 8, 2020 Yep, no dino's in the Paleozoic; not till the Mesozoic. 2 Link to comment Share on other sites More sharing options...
Fossildude19 Posted September 8, 2020 Share Posted September 8, 2020 Welcome to the Forum. This gets a vote for Concretion, from me. 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...
Tidgy's Dad Posted September 8, 2020 Share Posted September 8, 2020 +1 for concretion. Life's Good! Tortoise Friend. Link to comment Share on other sites More sharing options...
Captain America Posted September 8, 2020 Author Share Posted September 8, 2020 So inside is a cool fossil? How would you best split something like this? Link to comment Share on other sites More sharing options...
Huntonia Posted September 8, 2020 Share Posted September 8, 2020 Some concretions contain fossils, but it depends greatly on the location and most concretions don't. Link to comment Share on other sites More sharing options...
jpc Posted September 8, 2020 Share Posted September 8, 2020 Just my opinion, but it is a cool looking rock. i would not bust it up. 1 Link to comment Share on other sites More sharing options...
Rockwood Posted September 8, 2020 Share Posted September 8, 2020 25 minutes ago, jpc said: Just my opinion, but it is a cool looking rock. i would not bust it up. Second that. Garden landscapers drool over rocks like this. Or at least they should. Link to comment Share on other sites More sharing options...
Troodon Posted September 8, 2020 Share Posted September 8, 2020 Ditto that, cool item that I would not bust up Link to comment Share on other sites More sharing options...
abyssunder Posted September 8, 2020 Share Posted September 8, 2020 In my thinking you may have a spheroidal weathering (onion skin weathering), so a geological formation. https://en.m.wikipedia.org/wiki/Spheroidal_weathering 3 " 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...
Captain America Posted September 8, 2020 Author Share Posted September 8, 2020 So far the answers are better than dino poop! The spheroidal weathering notion is compelling. Link to comment Share on other sites More sharing options...
sjaak Posted September 11, 2020 Share Posted September 11, 2020 You are sure it’s not a baked cow turd ? Link to comment Share on other sites More sharing options...
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