RCD Posted Saturday at 06:28 AM Share Posted Saturday at 06:28 AM 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 post Share on other sites
Lone Hunter Posted Saturday at 06:33 AM Share Posted Saturday at 06:33 AM Mostly cross sections of gastropods is what I see. 2 Link to post Share on other sites
Rockwood Posted Saturday at 07:25 AM Share Posted Saturday at 07:25 AM 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 post Share on other sites
Ludwigia Posted Saturday at 08:05 AM Share Posted Saturday at 08:05 AM 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 Link to post Share on other sites
DPS Ammonite Posted Saturday at 10:37 AM Share Posted Saturday at 10:37 AM 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 Link to post Share on other sites
RCD Posted Saturday at 10:23 PM Author Share Posted Saturday at 10:23 PM 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 post Share on other sites
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