Matrick Posted March 3, 2021 Share Posted March 3, 2021 Only one I've ever found like this. What it is exactly, I don't know. Found in a load of limestone road base, likely from a local mine. Link to comment Share on other sites More sharing options...
Matrick Posted March 3, 2021 Author Share Posted March 3, 2021 Link to comment Share on other sites More sharing options...
Matrick Posted March 3, 2021 Author Share Posted March 3, 2021 Link to comment Share on other sites More sharing options...
Matrick Posted March 3, 2021 Author Share Posted March 3, 2021 Link to comment Share on other sites More sharing options...
Matrick Posted March 3, 2021 Author Share Posted March 3, 2021 SW Florida Link to comment Share on other sites More sharing options...
Fossildude19 Posted March 3, 2021 Share Posted March 3, 2021 Internal mold of a bivalve, I believe. @MikeR @FossilDAWG 1 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...
FossilDAWG Posted March 3, 2021 Share Posted March 3, 2021 I agree it is an internal cast of a bivalve, but I don't have a suggestion as to genus. I don't think I have ever seen anything quite like that. Don 1 Link to comment Share on other sites More sharing options...
DPS Ammonite Posted March 3, 2021 Share Posted March 3, 2021 It is an interesting bivalve. I think that we are looking at a bivalve that has part of its shell that is peeling away layer by layer. The area circled in red looks like part of the steinkern, interior mold. The area circled in yellow has a lot of micro texture that looks more like the outside of a shell that may be peeling away to reveal inner shell layers. An internal mold is usually much smoother since it forms against the smooth shell interior. 2 My goal is to leave no stone or fossil unturned. See my Arizona Paleontology Guide link The best single resource for Arizona paleontology anywhere. Link to comment Share on other sites More sharing options...
MikeR Posted March 3, 2021 Share Posted March 3, 2021 That is really weird. In which county did you find it? Do you have a shot of the back end/posterior? Parts of it resemble Angel Wing bivalve Crytopleura LINK 2 1 "A problem solved is a problem caused"--Karl Pilkington "I was dead for millions of years before I was born and it never inconvenienced me a bit." -- Mark Twain Link to comment Share on other sites More sharing options...
Matrick Posted March 4, 2021 Author Share Posted March 4, 2021 Southwest Florida, United States Link to comment Share on other sites More sharing options...
Matrick Posted March 4, 2021 Author Share Posted March 4, 2021 Link to comment Share on other sites More sharing options...
Matrick Posted March 4, 2021 Author Share Posted March 4, 2021 Link to comment Share on other sites More sharing options...
Matrick Posted March 4, 2021 Author Share Posted March 4, 2021 Link to comment Share on other sites More sharing options...
Matrick Posted March 4, 2021 Author Share Posted March 4, 2021 Maybe a #Arcinellacornuta? Link to comment Share on other sites More sharing options...
MikeR Posted March 4, 2021 Share Posted March 4, 2021 9 hours ago, Matrick said: Maybe a #Arcinellacornuta? I'm leaning towards Chamidae myself. 1 "A problem solved is a problem caused"--Karl Pilkington "I was dead for millions of years before I was born and it never inconvenienced me a bit." -- Mark Twain Link to comment Share on other sites More sharing options...
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