Desrosiers1718 Posted February 8, 2023 Share Posted February 8, 2023 Found this Gastropod fossil in Simi Valley CA I know it’s Eocene. I was thinking Natica but not sure. Can anyone help ID. Link to comment Share on other sites More sharing options...
Fossildude19 Posted February 8, 2023 Share Posted February 8, 2023 @MikeR @Coco 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...
Coco Posted February 8, 2023 Share Posted February 8, 2023 Hi, Too damaged for me to deduce anything. Coco ---------------------- OUTIL POUR MESURER VOS FOSSILES : ici Ma bibliothèque PDF 1 (Poissons et sélaciens récents & fossiles) : ici Ma bibliothèque PDF 2 (Animaux vivants - sans poissons ni sélaciens) : ici Mâchoires sélaciennes récentes : ici Hétérodontiques et sélaciens : ici Oeufs sélaciens récents : ici Otolithes de poissons récents ! ici Un Greg... Link to comment Share on other sites More sharing options...
ClearLake Posted February 8, 2023 Share Posted February 8, 2023 (edited) It certainly has the right general shape to be a Natica, but there are several other genera of the family Naticidae that are similar and I am not certain how the fauna of the California Eocene differs from other Eocene faunas that I am more familiar with. A good shot of the aperture and the umbilicus (opposite the crest or spire) might be helpful but it sort of looks like they could be damaged and/or covered with sediment. Edited February 9, 2023 by ClearLake 2 Link to comment Share on other sites More sharing options...
RJB Posted February 9, 2023 Share Posted February 9, 2023 Looks very much like a naticid. Two formations up in Northern Ca have a total of 6 different species and to me they all look identical. I wish you luck in figuring out a species name. RB Link to comment Share on other sites More sharing options...
Desrosiers1718 Posted February 9, 2023 Author Share Posted February 9, 2023 Thank you everyone for your help. I’m going to ID it as a Natica. Thanks again. Link to comment Share on other sites More sharing options...
TRout Posted February 11, 2023 Share Posted February 11, 2023 I’ve found a few that look very similar to yours that I’ve tentatively IDed as eocernina hannibali. Here’s a few pics of mine followed by some images from literature that I’ve found. Link to comment Share on other sites More sharing options...
ClearLake Posted February 11, 2023 Share Posted February 11, 2023 40 minutes ago, TRout said: I’ve found a few that look very similar to yours that I’ve tentatively IDed as eocernina hannibali. I believe you may have it! Its good to have a publication that probably represents the formation of the original fossils in question. I went and found that publication to see what else was in there since I had trouble reading the picture you posted (probably my old eyes). I had originally asked for a picture of the aperture to try and help decide amongst the many naticid genera, but after reading your post, I relooked at picture 3 of the original specimen in question and had not noticed (the picture is a bit blurry and the specimen is broken, at least that's my excuse) the callus extending along the inner margin of the aperture. This seems to match very well with your Eocernina hannibali and I believe would certainly rule out Natica. I see that Eocernina was originally named Natica, but is now not even in the family Naticidae according to the Paleobiology Database. Several learnings for me today, thanks!! Link to comment Share on other sites More sharing options...
Desrosiers1718 Posted February 12, 2023 Author Share Posted February 12, 2023 Awesome thank you for taking time in helping me with the ID . Looks like it. Link to comment Share on other sites More sharing options...
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