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Found 19 results

  1. I guess as you get older, you get a little more crazy. I had sworn to slow down a bit, particularly after my exhausting hike down the mountain recently, so I'd been visiting easy-to-work sites like the ditch and the shark tooth exposure the last few weeks. But then my colleague told me that he'd opened up another section at the Callovian site in the Wutach Valley and that I should have a look at it. Maybe you can make some good finds. Well, why not? So off I went today. At this site you have to remove a lot of overburden to get at the good horizons and then you're whacking away at a hard concretionary sandy limestone in search of fossils. I use a pick hammer and club hammer for those purposes, which makes for a bit of wear and tear on the old tendons. The first 3 hours were not all that productive for my liking. Here's what my efforts had produced up to that point. But then I finally stumbled on something interesting and quite large to boot. The photos above were taken after about an hour of overburden removal. I needed yet another hour to remove the rest, which was absolutely necessary, since the ammonite was resting in the middle of an extremely hard concretionary lager and the chances of breakage were high. I was also already pretty sure at this point that the outer whorls would not survive the treatment, since they appeared to be unstable. Here's how things looked towards the end. You can see where the outer whorls have broken off and after I was able to pry out the inner whorls, I could see that the outer whorls didn't continue around to the back, since those parts were already eroded away. So that wasn't too bad after all and the inner whorls appear to be well-preserved as you may be able to discern below. ø is 16cm. So after this action, my heart was happy, but my wrist was aching like crazy and my legs were about to collapse because of crouching and bending the whole time. So I took a break, emptied my water bottle, and packed the things up for the return trek to the car, which in this case is happily only about 500 meters. I stopped in for roast beef with onions and french fries on the way home, so that pepped me up a bit I've also just discovered that Kytta ointment is good for aching wrists.
  2. One of my customers is keeping me quite busy lately. Last week he brought me among other things a relatively large, 22cm. diameter Callovian Choffatia ammonite from the Wutach Valley with another few smaller ones plus a belemnite attached. He asked me to send him play-by-play photos, which I did, so I figured I might just as well show them to you guys as well. Here are pics of both sides in the raw. As you can probably tell, it was extracted in 3 pieces which he glued back together. You can barely see the belemnite on the right in the middle of the first photo and the smaller ammos are at the bottom right in the second one. First step was to remove as much matrix as possible with the stylus, but soon after I started, the bit with the ammonites and the end of the living chamber popped off at a hairline crack, so I set them aside for reglueing at a later point. Here's how both sides looked after a few hours with the stylus and also after glueing the above mentioned pieces back on.
  3. Multiblock 13

    From the album Middle Jurassic Ammonites from Southern Germany

    Containing 4 Choffatia sp. ammonites and a piece of belemnite rostrum. 12x12x6cm. The 4th ammonite is hidden on the back side and can only be seen in profile in the last photo. herveyi zone Early Callovian From the Wutach Valley area.
  4. Another Multiblock

    We're still allowed to move about freely here in good old Baden-Wuerttemberg, so I figured as long as this is still the case, I'll mosey along to my spot in the Callovian in the Wutach Valley. A friend of mine has been working there recently, so I was hoping for some more fresh exposure and sure enough, he'd opened up some new possibilities for me. Spent the good part of the day prying and hammering and came up with a few nice things. Here's the first and probably the best which I just finished prepping this evening. A multiblock measuring 12x12x6cm with 4 x Choffatia sp. and a bit of belemnite. The 4th small ammonite can't be seen in the photos since it's tucked away tightly on the back.
  5. Choffatia sp. (Siemiradzski 1898)

    From the album Middle Jurassic Ammonites from Southern Germany

    6cm. herveyi zone Early Callovian Found on the Eichberg in the Wutach valley.
  6. Choffatia sp. (Siemiradzski 1898)

    From the album Middle Jurassic Ammonites from Southern Germany

    9cm. herveyi zone Early Callovian Found on the Eichberg in the Wutach valley.
  7. From the album Middle Jurassic Ammonites from Southern Germany

    4.5cm. From the herveyi zone, early Callovian on the Eichberg in Wutachtal.
  8. Calcite steinkern.
  9. Shell preservation.
  10. Another pair of ammos

    Yesterday I posted a fossil which I found during a walk over the fields in the Wutach area. Earlier on in the day I had spent some time digging at one of the sites in the Callovian. Here are the best ones I found. First a Choffatia sp. (5cm.) and then a Macrocephalites jacquoti (6cm.)
  11. From the album Middle Jurassic Ammonites from Southern Germany

    13mm. Pyritized. Found at a construction site on the autobahn 8 near Gruibingen. Callovian Ornatenton Formation.
  12. Nice sutures and inner whorls

    I dug up this relatively large (19cm. diameter) phragmocone of a Choffatia sp. ammonite on my last visit to the Wutach valley. It was obvious to me at the time of extraction that parts of the outer whorls were missing, but I decided to take it home anyway, thinking that although it was worth a closer look, I'd probably end up disposing of it. Well, in the end I didn't , since I found that the calcitic steinkern preservation of the outer whorls with the nicely pronounced sutures and the shell preservation on the inner whorls on one side warranted that I keep it in the collection for the time being.
  13. Choffatia sp. (Siemiradzski 1898)

    From the album Middle Jurassic Ammonites from Southern Germany

    30cm. A good portion of a large specimen. What can be seen is only the phragmocone. The original shell including living chamber could have been up to half a meter in circumference. From the early Callovian in the Wutach Valley.
  14. I was out at my favorite spot in the Wutach Valley again on Tuesday and dug up a large one this time. It was in a huge block buried under a foot of dirt, leaves and rubble and first I thought that I'd struck bedrock, but that unfortunately didn't turn out to be the case. The area I'm exploring is an old landslide in the woods on the side of a small mountain and although I've found at least one spot where I can start following the bedrock layers up and down, I'm discovering more and more that the whole slope is just full of landslips and floes at various levels, so it's hardly possible to get your bearings in the horizontal and you just have to rely on luck and your nose. Anyway, I was quite struck with the size of this thing although I couldn't make out much due to the surrounding matrix, so I trimmed it down to a size that would fit into my knapsack and trudged back to the car with it. I spent a good 10 hours working on it over the last few days. Here are a few before pics. Front & back and you can just make out part of the keel in the last one. So I got down to trimming at first with the air pen. It went fairly well, since there was a good parting layer between matrix and fossil. The innermost whorls were unfortunately not there and I inadvertently punched a hole in it with the stylus. I fixed that up later with some stone meal. I placed a ruler in the first photo to show its size. I left a thin layer of matrix over the fossil, so as not to scratch it with the stylus. You can now see where part of the keel is broken off at the bottom in the first picture. I could have done some reparation there later with apoxy putty, but I'd already decided at this point to leave it as is, since it provides an interesting glimpse into the mineralized septa. The next few hours were spent mostly abrading with the odd swing back to the air pens to trim off some more excess matrix where it was possible. That was necessary to save some time, since a lot of the remaining matrix turned out to be quite hard and although I was working with 90psi it was still pretty slow going. Oops. Just run out of MBs. Have to move on to the next post.....
  15. Pyritized Phragmocone.
  16. Choffatia sp. (Siemiradzski 1898)

    From the album Middle Jurassic Ammonites from Southern Germany

    6cm. From the Callovian "rotes Erzlager", herveyi Zone, at Buchberg, Wutachtal.
  17. Choffatia sp. (Siemiradzski 1898)

    From the album Middle Jurassic Ammonites from Southern Germany

    4.5cm. Another field find from Blumberg. Lower Callovian.
  18. From the album Middle Jurassic Ammonites from Southern Germany

    2cm. Pyrite Steinkern. Inner whorls. A8 construction site near Gruibingen. Ornatenton, Upper Callovian.
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