Ludwigia Posted September 17, 2016 Author Share Posted September 17, 2016 Here is the rest from that last trip which I've just cleaned up. Another Crussoliceras. Garnierisphinctes and a gastropod mold. 1 Greetings from the Lake of Constance. Roger http://www.steinkern.de/ Link to comment Share on other sites More sharing options...
Ludwigia Posted February 13, 2017 Author Share Posted February 13, 2017 Well, I finally got back a couple of times this week, now that the snow's started to recede. I spent he first visit mostly cleaning up the debris which had collected in between due to the weather, so I didn't come away with much. A father with his 2 boys parked his car and dropped in out of curiosity on the second trip and they stayed for a while to chat and find a few things. I guess they brought me some luck since I decided after they had left to move down into the lower horizon and ended up pulling out quite a bit. I've already shown a couple of sponges here which I prepped first and today I got started on the ammonites. The first is a Streblites tenuilobatus which I've hung on to due to the preserved jagged keel. Crussoliceras crusoliense Another one Lingulaticeras lingulatum with a Nucleata nucleata brachiopod. 3 Greetings from the Lake of Constance. Roger http://www.steinkern.de/ Link to comment Share on other sites More sharing options...
Ptychodus04 Posted February 13, 2017 Share Posted February 13, 2017 Very nice. The jagged keel is cool. I've not seen this before. Regards, Kris Global Paleo Services, LLC https://globalpaleoservices.com http://instagram.com/globalpaleoservices http://instagram.com/kris.howe Link to comment Share on other sites More sharing options...
Ludwigia Posted February 13, 2017 Author Share Posted February 13, 2017 1 minute ago, Ptychodus04 said: Very nice. The jagged keel is cool. I've not seen this before. It's funny how this gets preserved while the rest of the ammonite remains as a mold. 2 Greetings from the Lake of Constance. Roger http://www.steinkern.de/ Link to comment Share on other sites More sharing options...
Ptychodus04 Posted February 13, 2017 Share Posted February 13, 2017 20 minutes ago, Ludwigia said: It's funny how this gets preserved while the rest of the ammonite remains as a mold. Could it be that the jagged bit is somehow associated with the anchoring of the siphincle to the inside of the shell and is not in fact an actual external feature? Regards, Kris Global Paleo Services, LLC https://globalpaleoservices.com http://instagram.com/globalpaleoservices http://instagram.com/kris.howe Link to comment Share on other sites More sharing options...
Ludwigia Posted February 13, 2017 Author Share Posted February 13, 2017 43 minutes ago, Ptychodus04 said: Could it be that the jagged bit is somehow associated with the anchoring of the siphincle to the inside of the shell and is not in fact an actual external feature? Interesting thought, but it is an external feature of this species. However, siphuncles do often survive longer than the shell and I think the keel may be anchored to it somehow. I'm thinking that it could also be made of a substance more resistant to erosion than that of the shell. 3 Greetings from the Lake of Constance. Roger http://www.steinkern.de/ Link to comment Share on other sites More sharing options...
Jeffrey P Posted February 14, 2017 Share Posted February 14, 2017 Congratulations Roger on those beautiful ammonites, especially the Strebilites with the cool serrated edge. Your ditch keeps giving you impressive finds. Link to comment Share on other sites More sharing options...
ynot Posted February 14, 2017 Share Posted February 14, 2017 Yea, what they said! Wonderful pieces again! Tony 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...
Ptychodus04 Posted February 14, 2017 Share Posted February 14, 2017 3 hours ago, Ludwigia said: Interesting thought, but it is an external feature of this species. However, siphuncles do often survive longer than the shell and I think the keel may be anchored to it somehow. I'm thinking that it could also be made of a substance more resistant to erosion than that of the shell. Thanks for the info. Could be that the keel is just thicker, therefore it preserves better. Regards, Kris Global Paleo Services, LLC https://globalpaleoservices.com http://instagram.com/globalpaleoservices http://instagram.com/kris.howe Link to comment Share on other sites More sharing options...
Ludwigia Posted February 14, 2017 Author Share Posted February 14, 2017 9 hours ago, Jeffrey P said: Congratulations Roger on those beautiful ammonites, especially the Strebilites with the cool serrated edge. Your ditch keeps giving you impressive finds. 8 hours ago, ynot said: Yea, what they said! Wonderful pieces again! Tony Thanks guys 1 Greetings from the Lake of Constance. Roger http://www.steinkern.de/ Link to comment Share on other sites More sharing options...
Ludwigia Posted February 14, 2017 Author Share Posted February 14, 2017 8 hours ago, Ptychodus04 said: Thanks for the info. Could be that the keel is just thicker, therefore it preserves better. That's a point. You've really got me curious now. I think I'll ask an expert I know on this fauna about this the next time I see him. 1 Greetings from the Lake of Constance. Roger http://www.steinkern.de/ Link to comment Share on other sites More sharing options...
Ludwigia Posted February 15, 2017 Author Share Posted February 15, 2017 Got another 2 completed today. Garnierisphinctes sp. Discosphinctoides sp. 1 Greetings from the Lake of Constance. Roger http://www.steinkern.de/ Link to comment Share on other sites More sharing options...
FossilDAWG Posted February 16, 2017 Share Posted February 16, 2017 Amazing diversity you are getting out of that ditch. Also your prep work is almost magical. Don Link to comment Share on other sites More sharing options...
Ludwigia Posted February 16, 2017 Author Share Posted February 16, 2017 4 hours ago, FossilDAWG said: Amazing diversity you are getting out of that ditch. Also your prep work is almost magical. Don There certainly is a diverse amount of species and fauna to be found in this zone, some of which are in large numbers. I'm still digging in the hopes of finding more of the rarer ones. 1 Greetings from the Lake of Constance. Roger http://www.steinkern.de/ Link to comment Share on other sites More sharing options...
JimB88 Posted February 19, 2017 Share Posted February 19, 2017 Wow..those are cool...are the "gaps" on the Garnierisphinctes sp. a decorative feature or something else? Link to comment Share on other sites More sharing options...
Ludwigia Posted February 19, 2017 Author Share Posted February 19, 2017 5 hours ago, JimB88 said: Wow..those are cool...are the "gaps" on the Garnierisphinctes sp. a decorative feature or something else? Those are features of the sculpture which occur on this and also on other species. They are called constrictions. 2 Greetings from the Lake of Constance. Roger http://www.steinkern.de/ Link to comment Share on other sites More sharing options...
Ludwigia Posted February 19, 2017 Author Share Posted February 19, 2017 Here's another Garnierisphinctes with constrictions. 1 Greetings from the Lake of Constance. Roger http://www.steinkern.de/ Link to comment Share on other sites More sharing options...
JimB88 Posted February 19, 2017 Share Posted February 19, 2017 thats interesting. Ive collected small goniatites with that feature. http://www.thefossilforum.com/uploads/monthly_2016_11/post-2953-0-38343800-1364391101.jpg.02e130ff70232a6af6ee9eab0c820554.jpg Link to comment Share on other sites More sharing options...
Ludwigia Posted February 19, 2017 Author Share Posted February 19, 2017 8 hours ago, JimB88 said: thats interesting. Ive collected small goniatites with that feature. http://www.thefossilforum.com/uploads/monthly_2016_11/post-2953-0-38343800-1364391101.jpg.02e130ff70232a6af6ee9eab0c820554.jpg Interesting. That crops up in quite a few cephalopod species actually as a normal feature. I'm starting to wonder what made them create them. I do know that the first constriction is often the end of the embryonal stage, but I don't know why they continue on afterwards. Maybe it's seasonally conditioned. 1 Greetings from the Lake of Constance. Roger http://www.steinkern.de/ Link to comment Share on other sites More sharing options...
Ludwigia Posted March 9, 2017 Author Share Posted March 9, 2017 The snow came back to the Wutach this week, so I sauntered off to the more temperate Danube Valley again, spent a few hours in the mud and made some nice finds this time around. 1 Greetings from the Lake of Constance. Roger http://www.steinkern.de/ Link to comment Share on other sites More sharing options...
Plantguy Posted March 12, 2017 Share Posted March 12, 2017 Hey Roger, we should all have such productive mud. Nice finds! Suture patterns continue to fascinate me. Regards, Chris Link to comment Share on other sites More sharing options...
ynot Posted March 12, 2017 Share Posted March 12, 2017 Some more really nice pieces Roger! That is a great spot You have. Tony 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...
Jeffrey P Posted March 12, 2017 Share Posted March 12, 2017 Looks like you have an excellent back up site there , Roger. Those ammonites are exquisite. Congratulations and thanks for sharing. Link to comment Share on other sites More sharing options...
Ludwigia Posted March 12, 2017 Author Share Posted March 12, 2017 1 hour ago, Plantguy said: Hey Roger, we should all have such productive mud. Nice finds! Suture patterns continue to fascinate me. Regards, Chris Sometimes the preservation here is quite unique. Although it's sometimes not aesthetically pleasing, it can be quite informative. Even when the fossils are squished together, it's easy to abrade the soft surrounding matrix away and view the contents, since the steinkerns were hardened to the point of no return after the fact. Here's a typical example with the back side of the second ammonite I showed in the last post, a Taramelliceras trachinotum. 1 hour ago, ynot said: Some more really nice pieces Roger! That is a great spot You have. Tony It sure is. Should keep me busy for a couple of years yet. 1 hour ago, Jeffrey P said: Looks like you have an excellent back up site there , Roger. Those ammonites are exquisite. Congratulations and thanks for sharing. You'll be able to experience this site first hand once you get over here, since this is where I'm planning to take you and your friends. Greetings from the Lake of Constance. Roger http://www.steinkern.de/ Link to comment Share on other sites More sharing options...
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