RCD Posted May 14, 2022 Share Posted May 14, 2022 Would love to know the species of these spirally shell fossils. I think they are from the late Miocene but not sure. I'm also curious if the oblong rock intrusions in the first pic might be fossils as well? The location is the East Bay Hills in between the San Francisco Bay area and the Central Valley of California, USA. Thanks!!! 1 Link to comment Share on other sites More sharing options...
Lone Hunter Posted May 14, 2022 Share Posted May 14, 2022 Mostly cross sections of gastropods is what I see. 2 Link to comment Share on other sites More sharing options...
Rockwood Posted May 14, 2022 Share Posted May 14, 2022 55 minutes ago, RCD said: . I'm also curious if the oblong rock intrusions in the first pic might be fossils as well? It's possible that they are trace fossils, but I don't see any definite indication of it. 1 Link to comment Share on other sites More sharing options...
Ludwigia Posted May 14, 2022 Share Posted May 14, 2022 The snails could belong to the genus Turritella, but you'd have to research the formation's faunal assembly in order to find out for sure. Only an expert on this fauna could suggest a species to you. 1 2 Greetings from the Lake of Constance. Roger http://www.steinkern.de/ Link to comment Share on other sites More sharing options...
DPS Ammonite Posted May 14, 2022 Share Posted May 14, 2022 We are going to need a formation or layer of rock to determine if turritella occur. I remember seeing a nice layer of turritella south of Mt. Diablo Mountain in the State Park. https://www.geocaching.com/geocache/GC1KH9Q_turritella-snail-bed?guid=5ae3b488-49af-4c67-9382-48b4c989243b 1 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...
RCD Posted May 14, 2022 Author Share Posted May 14, 2022 11 hours ago, DPS Ammonite said: We are going to need a formation or layer of rock to determine if turritella occur. I remember seeing a nice layer of turritella south of Mt. Diablo Mountain in the State Park. https://www.geocaching.com/geocache/GC1KH9Q_turritella-snail-bed?guid=5ae3b488-49af-4c67-9382-48b4c989243b Thanks for that link. The location is close to Mt. Diablo so good chance it is also Turritella. Thanks again! Link to comment Share on other sites More sharing options...
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