Mare_22 Posted November 30, 2022 Share Posted November 30, 2022 Hi, this is my first post on this forum! (and sorry for bad english, btw) I just registered yesterday, and I would really appreciate if someone could ID this stone (?) I found. It is found in Croatia, on the Adriatic sea, on the island of Brač. I noticed it while I was walking down the stony path, in the inland of the island. I don't know anything about fossils, but it looks interesting and I am curious. Thank you! 3 Link to comment Share on other sites More sharing options...
minnbuckeye Posted November 30, 2022 Share Posted November 30, 2022 Great pictures for your first post. I am sure someone will be of assistance soon! 1 1 Link to comment Share on other sites More sharing options...
Bringing Fossils to Life Posted November 30, 2022 Share Posted November 30, 2022 To me this looks like an external mold of a crinoid stem, or a cephalopod. 1 1 Link to comment Share on other sites More sharing options...
Mare_22 Posted November 30, 2022 Author Share Posted November 30, 2022 27 minutes ago, minnbuckeye said: Great pictures for your first post. I am sure someone will be of assistance soon! Thank you, I followed the instructions! 1 Link to comment Share on other sites More sharing options...
Mare_22 Posted November 30, 2022 Author Share Posted November 30, 2022 29 minutes ago, Bringing Fossils to Life said: To me this looks like an external mold of a crinoid stem, or a cephalopod. Thank you, I googled it and it looks that way Link to comment Share on other sites More sharing options...
Fossildude19 Posted November 30, 2022 Share Posted November 30, 2022 Welcome to the Forum. This looks like it might be the internal chambers of some sort of nautiloid cephalopod. 1 5 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...
Tidgy's Dad Posted November 30, 2022 Share Posted November 30, 2022 I'm in the cephlopod chambers camp. If they had camps. 1 1 1 Life's Good! Tortoise Friend. Link to comment Share on other sites More sharing options...
Bringing Fossils to Life Posted November 30, 2022 Share Posted November 30, 2022 (edited) If you look from the end, it has the shape of a septum, but since I've had so many cephalopods turn out to be crinoids, I couldn't tell for sure. Here's a nice diagram of an orthoconic cephalopod, though the soft tissue restoration is inaccurate (see this thread for more discussion) and the body chamber is too long. I found the diagram online. On the smaller end, what seems to be longitudinal striae are present, which may be helpful later in further identification. Edited November 30, 2022 by Bringing Fossils to Life 1 Link to comment Share on other sites More sharing options...
Ludwigia Posted November 30, 2022 Share Posted November 30, 2022 According to the geological map of Brac, the stratigraphy is Cretaceous or younger, so there would be no orthoconic nautiloids to be found there, since they died out long before. I'm tending to think that this is a piece of an ammonite phragmocone. 1 1 Greetings from the Lake of Constance. Roger http://www.steinkern.de/ Link to comment Share on other sites More sharing options...
Bringing Fossils to Life Posted December 1, 2022 Share Posted December 1, 2022 Then where are the wavy sutures? Have they been obscured by remineralization, or worn away? I don't see where the younger whorls would have been enveloped. Link to comment Share on other sites More sharing options...
todor.dbk Posted December 1, 2022 Share Posted December 1, 2022 Hey, greetings and welcome! I'm also a new member and I'm writing to you from the Adriatic coast in Croatia. As Ludwigia already correctly said, it will help you to look at the geological map of Croatia somewhere on the Internet, because our coast is mostly from the Cretaceous period, or younger.. The location of your find will so eliminate a lot of things... I don't (yet ) know to much, so I won't dare to go into identification, I was just glad to see a stone from Croatia. All the best ! 4 Link to comment Share on other sites More sharing options...
Ludwigia Posted December 1, 2022 Share Posted December 1, 2022 5 hours ago, Bringing Fossils to Life said: Then where are the wavy sutures? Have they been obscured by remineralization, or worn away? I don't see where the younger whorls would have been enveloped. If you study it closely you can see that the sutures are covered by sediment. If that could be removed, then perhaps you might see some of the younger whorls, but they may also be completely chopped off already. Greetings from the Lake of Constance. Roger http://www.steinkern.de/ Link to comment Share on other sites More sharing options...
Mare_22 Posted December 1, 2022 Author Share Posted December 1, 2022 2 hours ago, todor.dbk said: Hey, greetings and welcome! I'm also a new member and I'm writing to you from the Adriatic coast in Croatia. As Ludwigia already correctly said, it will help you to look at the geological map of Croatia somewhere on the Internet, because our coast is mostly from the Cretaceous period, or younger.. The location of your find will so eliminate a lot of things... I don't (yet ) know to much, so I won't dare to go into identification, I was just glad to see a stone from Croatia. All the best ! Hi from St! Thank you, I spent half day looking at geological maps, and half day looking at another photo of some strange rock I came across while walking the dog I might post it tomorrow, it looks like trace fossil (maybe). Mare 2 hours ago, todor.dbk said: Hey, greetings and welcome! I'm also a new member and I'm writing to you from the Adriatic coast in Croatia. As Ludwigia already correctly said, it will help you to look at the geological map of Croatia somewhere on the Internet, because our coast is mostly from the Cretaceous period, or younger.. The location of your find will so eliminate a lot of things... I don't (yet ) know to much, so I won't dare to go into identification, I was just glad to see a stone from Croatia. All the best ! 1 Link to comment Share on other sites More sharing options...
todor.dbk Posted December 1, 2022 Share Posted December 1, 2022 Yes! There are many forum members here who know a lot, someone will say something.. Good luck ! 1 Link to comment Share on other sites More sharing options...
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