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Some of you may be wondering what and where the Aubach is, so first I'll explain (Of course @Everhardus already knows what I'm talking about, since he recently inspired me here to make the trip). The Aubach is a creek in the Wutach area whose undercut slopes expose in sections the entire Early Jurassic from the Hettangian to the Toarcian with even the Aalenian stage of the Middle Jurassic at the top. This is one of the very first exposures studied by the pioneering German Paleontologists and Geologists such as Quenstedt. Geology students from all over southern Germany visit this site to learn on hand about the stratigraphy from their professors. The last time I was here, which was quite a few years ago, I bumped into a group from the University of Tuebingen. I didn't think to get a photo of the classic exposure before it was too late, but here are a couple of typical ones a bit farther upstream. My plan was to duck down to the classical exposure and then work my way upstream to the waterfall at the top. I wasn't expecting to find much, since this creek has been picked over by countless collectors over a stretch of almost 200 years, but new stuff comes down each year , so you never know. I was just in the mood for a nice adventure with no great expectations. I didn't quite make it as far as I wanted to, but more about that later. I was however in for a big surprise when I arrived at the parking spot above the creek. I was just about to don my knapsack as I glanced down the hill and saw a bunch of fossils scattered about. Some other collector had obviously disposed of a few things which didn't aspire to his high standards. They weren't perfect, but some of them were worth having a closer look, so I dumped them into a bag and put them in the trunk. Off to a good start! Here's a photo I took of them once I got home. I then clambered down the slope to the creek and spent some time at the classical exposure breaking stone. Not to much avail, though. There were a lot of imprints and the odd piece of a living chamber lying about. Here's a typical looking one which didn't contain much. I then moved on upstream some more, taking my time and studying the rocks closely. There had been another collector there before me recently according to the fresh bootprints I kept seeing, so I decided to go other ways than his prints were showing. Good thing I did! There it was. Just lying in the stream under a fallen-down tree. A good size at ø 20 cm. Lucky me! That really made my day! Although the day was far from over for me, so off I went again. The going got slower as I moved on upstream, since it was getting narrower and an increasing number of slipped down trees were hindering my progression. I managed to get through this lot. But then just around the corner I was confronted with this. And it didn't look like it was going to improve farther on. I had found a few other tidbits along the creek, so, since I had already been underway for almost 6 hours, I clambered up the slope to the footpath which winds its way along above the creek with the intention of continuing on along it up to the waterfall at the end. After about a 20-minute hike, however, I realized that I had not come along nearly as far as I thought I had, so, since dusk was setting in, I turned around and headed back to the car. I must admit that I was pretty tuckered out at my journey's end, but it was well worth it, as well as the Doner Kebab which I picked up in Blumberg. Here's the ammonite and the few other things I found in a photo I took once I got back home.
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Protogrammoceras cf. depressum (Quenstedt 1883)
Ludwigia posted a gallery image in Member Collections
From the album: Early Jurassic Ammonites from Southern Germany
ø 7,5cm. Pliensbachian. Found in the Aubach in the Wutach Valley.- 1 comment
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From the album: Brachiopoda
3cm. Sinemurian. Early Jurassic. Found in the Aubach in the Wutach Valley.- 1 comment
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- spiriferina
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