sunshinegirlie Posted August 21, 2017 Share Posted August 21, 2017 Hoping to find someone who knows what this is. Obviously, it's some sort of seashell but I was hoping for more specific information and opinion. I found it while snorkeling last week in Lake Huron (Straits of Mackinaw region). Thanks! Link to comment Share on other sites More sharing options...
Fossildude19 Posted August 21, 2017 Share Posted August 21, 2017 Welcome to the Forum. This looks like a worn cross section through a gastropod. Not sure of the geology of the area, though. Regards, EDIT: It appears that the Bois Blanc Formation is in that area - Early Devonian in age. 398-415 million years ago. 1 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...
sunshinegirlie Posted August 21, 2017 Author Share Posted August 21, 2017 12 minutes ago, Fossildude19 said: Welcome to the Forum. This looks like a worn cross section through a gastropod. Not sure of the geology of the area, though. Regards, EDIT: It appears that the Bois Blanc Formation is in that area - Early Devonian in age. 398-415 million years ago. Very cool! Thanks!! Link to comment Share on other sites More sharing options...
Ludwigia Posted August 21, 2017 Share Posted August 21, 2017 I agree with Tim. Gastropod. Greetings from the Lake of Constance. Roger http://www.steinkern.de/ Link to comment Share on other sites More sharing options...
Max-fossils Posted August 21, 2017 Share Posted August 21, 2017 Awesome find! I love seeing cross sections like this, because you then get to clearly see the inside of the shell, and the chambers. Congrats on the find, Max 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...
sunshinegirlie Posted August 21, 2017 Author Share Posted August 21, 2017 (edited) Thanks!! I was in the area where Lake Michigan meets Lake Huron. Fun place to snorkel! I was looking for puddingstones but came across this, instead! Edited August 21, 2017 by sunshinegirlie 1 Link to comment Share on other sites More sharing options...
Kane Posted August 21, 2017 Share Posted August 21, 2017 Any chance for a more detailed close-up of the specimen at higher resolution? It very well might be gastropod, but there is something about the cherty texture on this one that resembles some of the corals I've found in that formation. Although the shape may tend toward gastropod, some rugose corals have taken on suggestive appearances, such as tight coiling. 1 ...How to Philosophize with a Hammer Link to comment Share on other sites More sharing options...
ynot Posted August 21, 2017 Share Posted August 21, 2017 @Ludwigia, @Fossildude19 This shell looks like it has septa, would that mean it is a gonite and not a snail? Darwin said: " Man sprang from monkeys." Will Rogers said: " Some of them didn't spring far enough." My Fossil collection - My Mineral collection My favorite thread on TFF. Link to comment Share on other sites More sharing options...
Fossildude19 Posted August 21, 2017 Share Posted August 21, 2017 16 minutes ago, ynot said: @Ludwigia, @Fossildude19 This shell looks like it has septa, would that mean it is a gonite and not a snail? I don't think there are septa. I see mineral veins. They aren't evenly spaced, as one would expect with septa. 1 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...
Ludwigia Posted August 21, 2017 Share Posted August 21, 2017 6 hours ago, ynot said: @Ludwigia, @Fossildude19 This shell looks like it has septa, would that mean it is a gonite and not a snail? Sorry ony. I don't see any either. Like Tim said. 1 Greetings from the Lake of Constance. Roger http://www.steinkern.de/ Link to comment Share on other sites More sharing options...
sunshinegirlie Posted August 21, 2017 Author Share Posted August 21, 2017 (edited) 10 hours ago, Kane said: Any chance for a more detailed close-up of the specimen at higher resolution? It very well might be gastropod, but there is something about the cherty texture on this one that resembles some of the corals I've found in that formation. Although the shape may tend toward gastropod, some rugose corals have taken on suggestive appearances, such as tight coiling. I only have my phone to take pictures with, but here are a few more. Edited August 21, 2017 by sunshinegirlie Image quality Link to comment Share on other sites More sharing options...
ynot Posted August 21, 2017 Share Posted August 21, 2017 8 hours ago, Fossildude19 said: I don't think there are septa. I see mineral veins. They aren't evenly spaced, as one would expect with septa. 2 hours ago, Ludwigia said: Sorry ony. I don't see any either. Like Tim said. Oh well, not the first time I was seeing things that were not there. Darwin said: " Man sprang from monkeys." Will Rogers said: " Some of them didn't spring far enough." My Fossil collection - My Mineral collection My favorite thread on TFF. Link to comment Share on other sites More sharing options...
sunshinegirlie Posted August 21, 2017 Author Share Posted August 21, 2017 This is as close as I could get to preserve image quality. It was found snorkeling in Michigan. Straits of Mackinaw area where Lake Huron meets Lake Michigan. Found near Mackinac Island. Link to comment Share on other sites More sharing options...
Kane Posted August 21, 2017 Share Posted August 21, 2017 I am leaning more towards coral impression. Despite the very suggestive coiling, note that the ribbing is not continuous. Also, looking over Bois Blanc Fm gastropod specimens, I haven't encountered any that have ribbing. ...How to Philosophize with a Hammer Link to comment Share on other sites More sharing options...
sunshinegirlie Posted August 21, 2017 Author Share Posted August 21, 2017 I also found this one. Is this a fossil? Link to comment Share on other sites More sharing options...
ynot Posted August 21, 2017 Share Posted August 21, 2017 That one is a horn coral. Darwin said: " Man sprang from monkeys." Will Rogers said: " Some of them didn't spring far enough." My Fossil collection - My Mineral collection My favorite thread on TFF. Link to comment Share on other sites More sharing options...
Kane Posted August 21, 2017 Share Posted August 21, 2017 That certainly is: a rugose coral. EDIT: Tony beat me to it - fastest keystroke in the west! 1 ...How to Philosophize with a Hammer Link to comment Share on other sites More sharing options...
sunshinegirlie Posted August 21, 2017 Author Share Posted August 21, 2017 5 minutes ago, ynot said: That one is a horn coral. Thanks! Link to comment Share on other sites More sharing options...
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