kg1 Posted February 17, 2019 Share Posted February 17, 2019 This Gastropod does not seem to be in Ellen Moore's book and there seems to be different opinions as to what it might be. Is there anyone who can tell me exactly what this is and show me a picture of the specimen they refer to? Miocene Astoria Formation Oregon Link to comment Share on other sites More sharing options...
fifbrindacier Posted February 17, 2019 Share Posted February 17, 2019 You can check that site : http://fossilshells.nl. It looks like a Buccinidae, but i'm not sure, Could you take a photo of the opening face ? 1 "On ne voit bien que par le coeur, l'essentiel est invisible pour les yeux." (Antoine de Saint-Exupéry) "We only well see with the heart, the essential is invisible for the eyes." In memory of Doren Link to comment Share on other sites More sharing options...
kg1 Posted February 17, 2019 Author Share Posted February 17, 2019 opening face pics Link to comment Share on other sites More sharing options...
fifbrindacier Posted February 17, 2019 Share Posted February 17, 2019 Could take those pics with your shell in a vertical position ? Like on the left of this pic i took from the net : "On ne voit bien que par le coeur, l'essentiel est invisible pour les yeux." (Antoine de Saint-Exupéry) "We only well see with the heart, the essential is invisible for the eyes." In memory of Doren Link to comment Share on other sites More sharing options...
Max-fossils Posted February 17, 2019 Share Posted February 17, 2019 Very nice! (For those that didn't notice, the tags say 'Astoria Formation'. @kg1, it's generally a good idea to put that kind of info in the main text too, as people (ie me) often have the tendency to forget to look at the tags ) Here is a paper I found when googling "Astoria Formation fossils": https://pubs.usgs.gov/pp/0419/report.pdf I guess it's the one you were referencing. I personally think that Gyrineum dilleri (plate II, 8-9) looks very similar to yours. After quickly looking through the other specimens featured in the book, I must say I'm impressed! It looks like a really rich location regarding the molluscan fauna! Must be real pleasure to hunt at Best regards, Max 2 Max Derème "I feel an echo of the lightning each time I find a fossil. [...] That is why I am a hunter: to feel that bolt of lightning every day." - Mary Anning >< Remarkable Creatures, Tracy Chevalier Instagram: @world_of_fossils Link to comment Share on other sites More sharing options...
kg1 Posted February 17, 2019 Author Share Posted February 17, 2019 @Max-fossils That is definatley the one that most closely resembles this one but I keep thinking mine has 2 more vertices? than the one thats referred to in that publication. It also may be named incorrectly if it is that one. One expert says: "Just to be clear this is certainly not closely related to Gyrineum, although that is the name that Ellen and others of that time had used. The type (Gyrineum gyrineum is quite distinctive (small nodes, sharp varices, squat whorls, somewhat flattened in profile. The genus evolved in the tropical Indo-Pacific, however. Argobuccinum and related taxa (Mediargo) evolved in the north Pacific during the Paleocene. Beu (2010) suggested synonymizing with Argobuccinum on the basis of purported evolutionary relationships and morphological characters https://www.priweb.org/downloads/pubs/item_pdf_5607.pdf " 1 Link to comment Share on other sites More sharing options...
Max-fossils Posted February 17, 2019 Share Posted February 17, 2019 @kg1 reading the document more closely, it seems that you're correct, Gyrineum doesn't appear to be valid indeed. About the "vertices" (are you referring to the big ridges running along your shell from top to bottom? My gastropod terminology is not very good...), I know that these can sometimes be very variable. Especially in the Buccinidae, looking at the species Buccinum undatum, I know although most specimens don't have any, finding specimens that do have those ridges is not uncommon, and the number of ridges can vary greatly too. Although the ridges in yours seem very pronounced (I am not familiar with the genus enough to say whether this is a "must-have' characteristic or not), I think that something similar could be the case in our question here. So I guess it's Argobuccinum then. 1 Max Derème "I feel an echo of the lightning each time I find a fossil. [...] That is why I am a hunter: to feel that bolt of lightning every day." - Mary Anning >< Remarkable Creatures, Tracy Chevalier Instagram: @world_of_fossils Link to comment Share on other sites More sharing options...
kg1 Posted February 17, 2019 Author Share Posted February 17, 2019 @Max-fossils I was referring to the smaller ones. Also the big ridges on either side are offset from one another quite a bit. 1 Link to comment Share on other sites More sharing options...
Max-fossils Posted February 17, 2019 Share Posted February 17, 2019 48 minutes ago, kg1 said: @Max-fossils I was referring to the smaller ones. Also the big ridges on either side are offset from one another quite a bit. Then I don’t know what you’re talking about... could you point them out by labeling a picture perhaps? Max Derème "I feel an echo of the lightning each time I find a fossil. [...] That is why I am a hunter: to feel that bolt of lightning every day." - Mary Anning >< Remarkable Creatures, Tracy Chevalier Instagram: @world_of_fossils Link to comment Share on other sites More sharing options...
fifbrindacier Posted February 17, 2019 Share Posted February 17, 2019 2 hours ago, Max-fossils said: @kg1 reading the document more closely, it seems that you're correct, Gyrineum doesn't appear to be valid indeed. About the "vertices" (are you referring to the big ridges running along your shell from top to bottom? My gastropod terminology is not very good...), I know that these can sometimes be very variable. Especially in the Buccinidae, looking at the species Buccinum undatum, I know although most specimens don't have any, finding specimens that do have those ridges is not uncommon, and the number of ridges can vary greatly too. Although the ridges in yours seem very pronounced (I am not familiar with the genus enough to say whether this is a "must-have' characteristic or not), I think that something similar could be the case in our question here. So I guess it's Argobuccinum then. I also wonder about those very pronounced ridges. I've looked at the documents you both posted and found on the net a photo of Argobuccinum pustulosum with big ridges. 1 "On ne voit bien que par le coeur, l'essentiel est invisible pour les yeux." (Antoine de Saint-Exupéry) "We only well see with the heart, the essential is invisible for the eyes." In memory of Doren Link to comment Share on other sites More sharing options...
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