IonRocks Posted August 12, 2019 Share Posted August 12, 2019 Here’s one a friend and I have been trying to settle for a little while. One end of the argument is that this is an unusual rock carried off the mountains by glaciers. the other end is that this is a heavily eroded bivalve. Link to comment Share on other sites More sharing options...
IonRocks Posted August 12, 2019 Author Share Posted August 12, 2019 For what it may be worth here, the fossil closest in size from this same location. Link to comment Share on other sites More sharing options...
DPS Ammonite Posted August 12, 2019 Share Posted August 12, 2019 It looks most like a thick piece of oyster shell with barnacle borings. Check to see if it fizzes in acid which would suggest a shell. 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...
caldigger Posted August 12, 2019 Share Posted August 12, 2019 By the way Parker, nice to see you back here again! Link to comment Share on other sites More sharing options...
Xiphactinus Posted August 12, 2019 Share Posted August 12, 2019 Another vote for clam....probably a big inoceremus. Link to comment Share on other sites More sharing options...
IonRocks Posted August 13, 2019 Author Share Posted August 13, 2019 Thanks! maybe these few comments can help convince my friend. Hoping to do some more digging at the location for a more complete specimen. Link to comment Share on other sites More sharing options...
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