Ludwigia Posted May 17, 2013 Share Posted May 17, 2013 (edited) I had the opportunity a few weeks ago to visit a site where the humphresianum Zone of the middle Jurassic Bajocian layers is exposed in the countryside near Basel. I've been busy ever since preparing my finds. I'm not finished yet, but I thought I could show the ones that are done already. The large ammonites all belong to the Genus Stephanoceras and are mostly probably S.humphresianum. The smaller ones are the microconch Normannites sp. They're fascinating due to the large apophysen at the end of the orifice. I'm not versed enough yet to be able to id the species. The shells are all well preserved. 13cm. in diameter. This is the little one attached. 14.5cm. Teloceras sp. 16cm. With pyrite in the whorls. Edited May 25, 2013 by Ludwigia Greetings from the Lake of Constance. Roger http://www.steinkern.de/ Link to comment Share on other sites More sharing options...
Ludwigia Posted May 17, 2013 Author Share Posted May 17, 2013 12cm. With oysters and serpula attached. 4.5cm. Front view. The nautilus Cenoceras sp. This is only part of the phragmocone of a very large one. I managed to save some of the outer chamber walls by preparation which allows for interesting observations. Greetings from the Lake of Constance. Roger http://www.steinkern.de/ Link to comment Share on other sites More sharing options...
Ludwigia Posted May 17, 2013 Author Share Posted May 17, 2013 5.5 cm. One of the "ears" is missing. The large bivalve Ctenostreon pectiniformis. 15cm. long. The bivalve Plagiostoma sp. along with Serpula and oysters attached to what appears to be part of the living chamber of a large nautilus. Greetings from the Lake of Constance. Roger http://www.steinkern.de/ Link to comment Share on other sites More sharing options...
Auspex Posted May 17, 2013 Share Posted May 17, 2013 These are all really quite spectacular! The associations, the preservation, the handsome patina...all-around wonderful fossils Of course, your 'loving touch' brings out their best! "There has been an alarming increase in the number of things I know nothing about." - Ashleigh Ellwood Brilliant “Try to learn something about everything and everything about something.” - Thomas Henry Huxley >Paleontology is an evolving science. >May your wonders never cease! Link to comment Share on other sites More sharing options...
Uncle Siphuncle Posted May 17, 2013 Share Posted May 17, 2013 Weit aus, Mann! Das ist "der Hammer". I was wondering what you've been up to lately, Roger. Grüße, Daniel A. Wöhr aus Südtexas "To the motivated go the spoils." Link to comment Share on other sites More sharing options...
Shamalama Posted May 17, 2013 Share Posted May 17, 2013 Impressive as usual, Roger. Really blows my mind what you find and manage to prep out. Never seen an Ammo with "ears". -Dave __________________________________________________ Geologists on the whole are inconsistent drivers. When a roadcut presents itself, they tend to lurch and weave. To them, the roadcut is a portal, a fragment of a regional story, a proscenium arch that leads their imaginations into the earth and through the surrounding terrain. - John McPheeIf I'm going to drive safely, I can't do geology. - John McPheeCheck out my Blog for more fossils I've found: http://viewsofthemahantango.blogspot.com/ Link to comment Share on other sites More sharing options...
Ludwigia Posted May 18, 2013 Author Share Posted May 18, 2013 These are all really quite spectacular! The associations, the preservation, the handsome patina...all-around wonderful fossils Of course, your 'loving touch' brings out their best! Thanks very much, Chas!! Greetings from the Lake of Constance. Roger http://www.steinkern.de/ Link to comment Share on other sites More sharing options...
Ludwigia Posted May 18, 2013 Author Share Posted May 18, 2013 Weit aus, Mann! Das ist "der Hammer". I was wondering what you've been up to lately, Roger. Been spending lots of time secretly in the basement... Greetings from the Lake of Constance. Roger http://www.steinkern.de/ Link to comment Share on other sites More sharing options...
Ludwigia Posted May 18, 2013 Author Share Posted May 18, 2013 Impressive as usual, Roger. Really blows my mind what you find and manage to prep out. Never seen an Ammo with "ears". It's not easy to find them, but when you do you're happy as a ...fossil collector...Almost all of the microconches in the middle and upper Jurassic have some form of apophyse. They're fascinating. One theory is that they helped the little creatures get a hold on their much larger female counterparts during pairing. Greetings from the Lake of Constance. Roger http://www.steinkern.de/ Link to comment Share on other sites More sharing options...
masonboro37 Posted May 18, 2013 Share Posted May 18, 2013 Oh, how splendid! Process of identification "mistakes create wisdom". Link to comment Share on other sites More sharing options...
Wrangellian Posted May 18, 2013 Share Posted May 18, 2013 The 'ears' are also new to me.. fascinating! Link to comment Share on other sites More sharing options...
Missourian Posted May 18, 2013 Share Posted May 18, 2013 Most excellent specimens. Those 'ears' are amazing. I didn't realize ammos had them. Now when I see this: I think of this: Context is critical. Link to comment Share on other sites More sharing options...
Terry Dactyll Posted May 18, 2013 Share Posted May 18, 2013 Roger.... Some very nice specimens there.... Congratulations.... Cheers Steve... And Welcome if your a New Member... Link to comment Share on other sites More sharing options...
Ludwigia Posted May 18, 2013 Author Share Posted May 18, 2013 Thanks everyone. Missourian, you really hit the ear on the tongue with that photo Greetings from the Lake of Constance. Roger http://www.steinkern.de/ Link to comment Share on other sites More sharing options...
hrguy54 Posted May 18, 2013 Share Posted May 18, 2013 Impressive pieces. Link to comment Share on other sites More sharing options...
taj Posted May 18, 2013 Share Posted May 18, 2013 That´s astounding! Is it located near Anwil, from where I've seen those crazy pieces on the net? Link to comment Share on other sites More sharing options...
Ludwigia Posted May 18, 2013 Author Share Posted May 18, 2013 Impressive pieces. Thanks That´s astounding! Is it located near Anwil, from where I've seen those crazy pieces on the net? You got it. These finds are from just one of the many locations in that area, although many are only temporary construction sites and such. Greetings from the Lake of Constance. Roger http://www.steinkern.de/ Link to comment Share on other sites More sharing options...
lissa318 Posted May 18, 2013 Share Posted May 18, 2013 Nice! Wonderful finds!!! Link to comment Share on other sites More sharing options...
Ludwigia Posted May 18, 2013 Author Share Posted May 18, 2013 Thanks, Lissa! These are my first really good finds from this zone, so I'm really happy with them. There should be more coming once I get the rest prepped. Greetings from the Lake of Constance. Roger http://www.steinkern.de/ Link to comment Share on other sites More sharing options...
Fossildude19 Posted May 18, 2013 Share Posted May 18, 2013 Outstanding finds and prep, once again, Roger. Glad to see you keeping busy! Regards, 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 May 19, 2013 Author Share Posted May 19, 2013 Thanks, Tim. As if I didn't have anything better to do... Greetings from the Lake of Constance. Roger http://www.steinkern.de/ Link to comment Share on other sites More sharing options...
nala Posted May 19, 2013 Share Posted May 19, 2013 Stunning finds and picts Roger! Link to comment Share on other sites More sharing options...
Ludwigia Posted May 19, 2013 Author Share Posted May 19, 2013 Thanks, Gery! Greetings from the Lake of Constance. Roger http://www.steinkern.de/ Link to comment Share on other sites More sharing options...
Ludwigia Posted May 26, 2013 Author Share Posted May 26, 2013 (edited) Now that I've finished with the finds from Hannover, I've gotten back to going through the rest of the things from here. I've just finished prepping these two. Partial phragmocone of a larger Teloceras sp. with a small oyster at the end of the whorls. 7.5cm. The bivalve Modiolus bipartitus. The cigar shaped thing between the shells may be the fossilized byssus thread, though I'm not at all sure if that's possible. I've sent off a question to an expert to find out. Edited May 27, 2013 by Ludwigia Greetings from the Lake of Constance. Roger http://www.steinkern.de/ Link to comment Share on other sites More sharing options...
Ludwigia Posted May 26, 2013 Author Share Posted May 26, 2013 Another one. This time a double Normannites sp., one of which has its "ears" still attached. The little block measures 6x6x5cm. 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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