Pilobolus Posted September 18, 2014 Share Posted September 18, 2014 Friend brought this interesting piece in, says it was from Colorado. Specifically, "possibly California Park, Routt National Forest, Colorado. Lon. -107.13838, Lat. 40.7433 area: Link to comment Share on other sites More sharing options...
Pilobolus Posted September 18, 2014 Author Share Posted September 18, 2014 Iridescent (sp) Link to comment Share on other sites More sharing options...
FossilDAWG Posted September 18, 2014 Share Posted September 18, 2014 It's a partial ammonite, somewhat crushed. The iridescence is a feature of the ammonite shell that is occasionally preserved. Don Link to comment Share on other sites More sharing options...
Pilobolus Posted September 19, 2014 Author Share Posted September 19, 2014 Hey, thanks Dawg! Much appreciated! Link to comment Share on other sites More sharing options...
jhw Posted September 19, 2014 Share Posted September 19, 2014 Kind of looks more oyster like to me. They too can retain some mother of pearl. Link to comment Share on other sites More sharing options...
Auspex Posted September 19, 2014 Share Posted September 19, 2014 Kind of looks more oyster like to me. They too can retain some mother of pearl. Like Inoceramus? This was my first impression. "There has been an alarming increase in the number of things I know nothing about." - Ashleigh Ellwood Brilliant “Try to learn something about everything and everything about something.” - Thomas Henry Huxley >Paleontology is an evolving science. >May your wonders never cease! Link to comment Share on other sites More sharing options...
jhw Posted September 19, 2014 Share Posted September 19, 2014 Based on appearance, size and geologic age of the area, looks like a pretty good fit to me. Link to comment Share on other sites More sharing options...
BobWill Posted September 20, 2014 Share Posted September 20, 2014 (edited) I thought inoceramus was a clam even thought they have superficial resemblance to some extant oysters. My first thought was internal mold of some oyster with calcite replacement because of the smooth texture but now I'm wondering if those are faint growth lines on there too which could either be inoceramus or some oyster. Edited September 20, 2014 by BobWill Link to comment Share on other sites More sharing options...
Pilobolus Posted September 22, 2014 Author Share Posted September 22, 2014 Thanks all! Link to comment Share on other sites More sharing options...
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