Dimitris Posted October 19, 2020 Share Posted October 19, 2020 21 hours ago, RuMert said: The main reason behind isolating the Volgian is substantially different conditions and ammonite zones. I don't think you hear often about such genera as Ilowayskya, Zarayskites, Pavlovia, Virgatites and Craspedites, while in the Volgian they define the stratigraphy. There were hardly any political reasons for supporting a separate stage, as many Soviet paleontologists advocated the use of Tithonian. Very interesting story. I tried to check some paleo maps and I think this one defines your place. Tethys East, your sea around Laurasia. https://lh3.googleusercontent.com/proxy/5-rMe-Jtf0QMbpFM6taNkXC1C6RqxGcfkk23cvHUBQpl_czw1qaqKQ6Dx8OxS4tEWOuoi7G0qFxHfd909A Concerning the political argument, I can't agree more. All Bulgarian references, even articles written before 1970, use the international terminology. If there was political intention in terms of "scientific glory", a Soviet influenced country would use the Volgian stage. Love the scenery by the way. Indeed this winter is a little bit delayed Great post as usually! 1 Link to comment Share on other sites More sharing options...
RuMert Posted October 19, 2020 Author Share Posted October 19, 2020 Thank you! You probably think marine reptiles will be next, but not yet. Aptychi! I've never seen so many big isolated aptychi anywhere. Compared to searching small ammonites for tiny aptychi, in 99% simply not preserved, this was an aptychi heaven. I've even flipped them over like shark teeth to see if they were whole. Looks like they won the most from that specific preservation and pyritisation compared to other fossils 8 My sites & reports Link to comment Share on other sites More sharing options...
RuMert Posted October 19, 2020 Author Share Posted October 19, 2020 9 My sites & reports Link to comment Share on other sites More sharing options...
Thecosmilia Trichitoma Posted October 19, 2020 Share Posted October 19, 2020 Nice finds! Do you have trouble with pyrite disease with some of these fossils? 1 It is better to keep your mouth closed and let people think you are a fool than to open it and remove all doubt -Mark Twain Link to comment Share on other sites More sharing options...
RuMert Posted October 19, 2020 Author Share Posted October 19, 2020 Thank you! I didn't lose anything due to pyrite decease so far, we'll see My sites & reports Link to comment Share on other sites More sharing options...
RuMert Posted October 19, 2020 Author Share Posted October 19, 2020 The reptiles In the 1st place for me it's the site to find some marine reptile material. This time I didn't stumble upon something really impressive, but IMHO made a couple of steps in the direction of jaws and skulls. Speaking of jaws, here's something like a jaw fragment: and a humerus of sorts 6 My sites & reports Link to comment Share on other sites More sharing options...
RuMert Posted October 19, 2020 Author Share Posted October 19, 2020 I also found a tooth "in the field" - my 1st from the site 8 My sites & reports Link to comment Share on other sites More sharing options...
RuMert Posted October 19, 2020 Author Share Posted October 19, 2020 Another first is a nice piece with associated ichthyosaur verts 11 My sites & reports Link to comment Share on other sites More sharing options...
RuMert Posted October 19, 2020 Author Share Posted October 19, 2020 lots of isolated ichthyosaur verts 11 My sites & reports Link to comment Share on other sites More sharing options...
RuMert Posted October 19, 2020 Author Share Posted October 19, 2020 10 My sites & reports Link to comment Share on other sites More sharing options...
RuMert Posted October 19, 2020 Author Share Posted October 19, 2020 Plesiosaur verts were rare this time as well as big bone fragments. Last year the i/p ratio was like 1 to 1, now the situation reverted to typical ichthyosaur dominance a shortened pliosaur vert a strange hybrid vert, very much looking like plesiosaur, but I'm leaning towards a heavily deformed ichthyosaur one 11 My sites & reports Link to comment Share on other sites More sharing options...
Ludwigia Posted October 19, 2020 Share Posted October 19, 2020 Another reason why Aptychen are often so well preserved is that their original substance is stable calcite as opposed to the aragonitic shells of the ammonites. This is a great report! Keep up the good work! 3 Greetings from the Lake of Constance. Roger http://www.steinkern.de/ Link to comment Share on other sites More sharing options...
RuMert Posted October 19, 2020 Author Share Posted October 19, 2020 Most of the finds on the last day of the trip Guess that's all for now, thanks for reading 12 My sites & reports Link to comment Share on other sites More sharing options...
RuMert Posted October 19, 2020 Author Share Posted October 19, 2020 22 minutes ago, Ludwigia said: Another reason why Aptychen are often so well preserved is that their original substance is stable calcite as opposed to the aragonitic shells of the ammonites. This is a great report! Keep up the good work! Thank you! Agree, but in other sites I've seen, aptychi are not preserved at all. It has also something to do with the Kimmeridgian, I saw similar big aptychi in your Kimmeridgian reports My sites & reports Link to comment Share on other sites More sharing options...
Ludwigia Posted October 19, 2020 Share Posted October 19, 2020 7 minutes ago, RuMert said: Most of the finds on the last day of the trip WOW!!!!!!! 3 minutes ago, RuMert said: Thank you! Agree, but in other sites I've seen, aptychi are not preserved at all. It has also something to do with the Kimmeridgian, I saw similar big aptychi in your Kimmeridgian reports I was wondering the same thing, although interestingly enough, they are also abundant in the Lower Jurassic Toarcian shales at Holzmaden. 1 Greetings from the Lake of Constance. Roger http://www.steinkern.de/ Link to comment Share on other sites More sharing options...
FossilNerd Posted October 20, 2020 Share Posted October 20, 2020 Great report as always RuMert! Very informative. The scenery, strata, and finds are amazing. Thanks for sharing! 1 The good thing about science is that it's true whether or not you believe in it. -Neil deGrasse Tyson Everyone you will ever meet knows something you don't. -Bill Nye (The Science Guy) Link to comment Share on other sites More sharing options...
Dimitris Posted October 20, 2020 Share Posted October 20, 2020 9 hours ago, RuMert said: Most of the finds on the last day of the trip Guess that's all for now, thanks for reading Now that's a haul! Hope the weather is good enough for another visit. Very promising finds. The tooth does not look like with shark, probably marine reptile, so the place is awesome! 1 Link to comment Share on other sites More sharing options...
Johannes Posted October 20, 2020 Share Posted October 20, 2020 @RuMert Thank you very very much much for your field trip report with all the great pictures! I really like the Anaptychus (the rarest find you have shown in this thread) and the high contrash Ammonite plate. I have to confess I immediatley checked the flights Berlin-Uljanowsk, but have to realise they did not fit in my budget (and in corona-times). Best regards from the Baltic Sea 1 Link to comment Share on other sites More sharing options...
Pemphix Posted October 20, 2020 Share Posted October 20, 2020 Veery cool stuff - esp. i like the vertebrate fossils ! 1 Link to comment Share on other sites More sharing options...
RuMert Posted October 20, 2020 Author Share Posted October 20, 2020 Thank you everybody! 2 hours ago, Dimitris said: Hope the weather is good enough for another visit Now in spring:) 1 hour ago, Johannes said: checked the flights Berlin-Uljanowsk I guess there are a couple flights from Moscow, that's all 1 My sites & reports Link to comment Share on other sites More sharing options...
Natalie81 Posted October 20, 2020 Share Posted October 20, 2020 Looks you had a great trip! Really nice finds, especially the marine reptiles 1 Link to comment Share on other sites More sharing options...
RuMert Posted October 20, 2020 Author Share Posted October 20, 2020 Thank you! Hope next time the reptiles will be really impressive 1 My sites & reports Link to comment Share on other sites More sharing options...
Darbi Posted October 20, 2020 Share Posted October 20, 2020 Fantastic trip! Thank you for sharing! 1 Link to comment Share on other sites More sharing options...
Monica Posted October 24, 2020 Share Posted October 24, 2020 What stunning scenery!!! And what fantastic finds!!! I love all of the inverts, especially the ammonites (some of them were huge!), but the vertebrate fossils are awesome, too! Congratulations on finding your first tooth and associated ichthyosaur vertebrae from this site! 1 Link to comment Share on other sites More sharing options...
RuMert Posted October 24, 2020 Author Share Posted October 24, 2020 Thank you, Monica, you're kind as always:) My sites & reports Link to comment Share on other sites More sharing options...
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