DPS Ammonite Posted April 15, 2015 Share Posted April 15, 2015 (edited) These oyster supposedly came from Contra Costa County which is east of San Francisco, CA. They measure from 12x9cm to 13x11cm. Any ideas what they might be? You can see them in person at McCone Hall at UC Berkeley's Cal Day, Saturday April 18th where I will be displaying local fossils, rocks and minerals. Go to the Northern California Geological Society tables. Also, see the other fossil exhibits and tour the UC Paleontology Museum. Bring in your fossils (and rocks) for us (and UC) to ID. DPS Ammonite Edited April 15, 2015 by DPS Ammonite 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...
DPS Ammonite Posted April 15, 2015 Author Share Posted April 15, 2015 Here's one more photo. 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...
Boesse Posted April 15, 2015 Share Posted April 15, 2015 Hertlein (1951: Ca. Div. Mines Geol. Guidebook 181:188-189) figures an oyster called Ostrea bourgeoisii from Kirker Pass, west side of Markley Canyon, upper San Pablo Fm/group. 1 Link to comment Share on other sites More sharing options...
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