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Found 9 results

  1. Ludwigia

    Shirbuirnia

    This time around I chose another of my favorite Ammonites from Dorset for the model. It's a Shirbuirnia trigonalis from the Early Bajocian laeviuscula zone from Sherborne, Dorset. This took a while trying to get all the sutures right.
  2. Ludwigia

    Shirbuirnia trigonalis

    From the album: Sketches

    The original is from the laeviuscula zone, trigonalis subzone of the Middle Jurassic Early Bajocian at Sherborne, Dorser, GB.
  3. Ludwigia

    Shirbuirnia gingensis (Waagen 1867)

    From the album: Middle Jurassic Ammonites from Southern Germany

    ø35cm. laeviuscula zone, Early Bajocian, Wedelsandstein Formation Found in the Wutach area With a Chlamys textoria perched at the edge of the living chamber in the photo below.
  4. Ludwigia

    Prepping a BIG Ammonite

    I recently recieved a large Ammonite from the Wutach Valley for preparation from a customer. It was a bit of a task since the thing is so huge with a diameter of 50cm. (1ft.7in.). First of all I had to remove the excess matrix with hammer & chisel. I didn't photograph it beforehand, but here is how it looked afterwards. As you can see, the living chamber was extracted in 2 extra pieces which still needed to be attached. The phragmocone alone has a diameter of over a foot and there is still a piece of living chamber missing at the end where the brown color can be seen at the top. I didn't glue them back on at first, but concentrated rather on stylus and abrader work on the phragmocome. The next photo shows it at that stage with the 2 living chamber pieces just placed next to it. I then abraded the living chamber pieces, removed the unseemly brown layer on the phragmocone and glued it all back together with a strong adhesive which then cured for 24 hours. The next step was to fill the gaps with modelling clay (I use a product called Apoxie Sculpt) and finish off with water color paints and a beeswax finish. I couldn't get the color quite right, so I left that last step to my customer's wife who did an excellent job. Here's the end product:
  5. Just missing half of the body chamber.
  6. Ludwigia

    Shirbuirnia stephani (Buckman 1910)

    From the album: Cephalopods Worldwide

    17cm. From the laeviuscula zone, trigonalis subzone at Sherborne, Dorset, UK.
  7. From the album: Cephalopods Worldwide

    17cm. Trigonalis subzone, laeviuscula zone, lower Bajocian, Middle Jurassic. From Sherborne, Dorset, UK.
  8. The colors come from the iron in the neighborhood. One can distinctly see the transition from phragmocone to body chamber. This is the index fossil for the subzone.
  9. Ludwigia

    Shirbuirnia trigonalis (Bayle 1878)

    From the album: Cephalopods Worldwide

    9cm. From the trigonalis subzone, of which it is the index fossil, laeviuscula zone, lower Bajocian. Found at Sherborne Dorset, GB.
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