sTamprockcoin Posted November 27, 2018 Share Posted November 27, 2018 This is from the Keefer Formation of the Clinton Group - Silurian. This site is a small iron strip pit in Duncansville, Blair County, Pennsylvania. When I first collected this I thought it might be a coprolite. Later a very experienced local fossil collector Id'ed it as a hematitic replacement of an orthoceras cephalapod. After looking at recent posts could it be something else or is it too lacking in detail to tell. I think its actually a cast not a replacement. 1 “Beautiful is what we see. More beautiful is what we understand. Most beautiful is what we do not comprehend.” N. Steno Link to comment Share on other sites More sharing options...
FossilDAWG Posted November 27, 2018 Share Posted November 27, 2018 I can't think of any Silurian critters that could produce a three inch coprolite. (I didn't know of anyone besides Skippy the Fossil Freak who called fossil poop "corpolite"). On the other hand it doesn't immediately suggest "orthoconic nautiloid" either. There could be some resemblance to a siphuncle of a breviconic nautiloid, though much distorted by the hematite replacement if that's what it actually is. Don 1 Link to comment Share on other sites More sharing options...
Innocentx Posted November 27, 2018 Share Posted November 27, 2018 Gastropod? "Journey through a universe ablaze with changes" Phil Ochs Link to comment Share on other sites More sharing options...
Bronzviking Posted November 28, 2018 Share Posted November 28, 2018 Looks like another odd shaped concretion. Link to comment Share on other sites More sharing options...
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