Sydneylh Posted March 19, 2015 Share Posted March 19, 2015 I found a nice colony of Crinoid fossils in a chunk of limestone here in central Iowa. Could someone tell me what period they are likely from? Link to comment Share on other sites More sharing options...
abyssunder Posted March 19, 2015 Share Posted March 19, 2015 Nice find,congrats! Maybe is from early mississippian. " 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...
Fossildude19 Posted March 19, 2015 Share Posted March 19, 2015 According to this geologic map, Polk County is firmly in the Pennsylvanian period. Regards, 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...
fossilized6s Posted March 19, 2015 Share Posted March 19, 2015 Welcome neighbor! Tough to say. You're best bet is to find out what formation you found it in. ~Charlie~ "There are those that look at things the way they are, and ask why.....i dream of things that never were, and ask why not?" ~RFK ->Get your Mosasaur print ->How to spot a fake Trilobite ->How to identify a CONCRETION from a DINOSAUR EGG Link to comment Share on other sites More sharing options...
Herb Posted March 23, 2015 Share Posted March 23, 2015 looks like Mississippian "Absence of evidence is not evidence of absence"_ Carl Sagen No trees were killed in this posting......however, many innocent electrons were diverted from where they originally intended to go. " I think, therefore I collect fossils." _ Me "When you have eliminated the impossible, whatever remains, however improbable, must be the truth."__S. Holmes "can't we all just get along?" Jack Nicholson from Mars Attacks Link to comment Share on other sites More sharing options...
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