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Showing results for tags 'hypselocylum zone'.
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The temps are hovering just above 0°C. right now and there were snow showers predicted yesterday. Nevertheles, my wife noticed that I was beginning to show symptoms of cabin fever, so she just mentioned casually that I could take off if I felt like it. So I did. The Wutach is no place to hang out if snow is on the way, so I thought I'd take a chance with the Danube Valley again. There was a bit of snow in between, but just light sleet showers which were really no bother and none of it stayed on the ground, so digging was no problem. I didn't fancy the idea of bailing out the hole in the divisum zone again, so I walked down the ditch to my excavation in the hypselocylum zone and spent about 6 hours breaking rock. At the end of the day I was quite pleased with the spoils. I'm pretty sure that there should be some nice ones this time. I spent most of the day today cleaning up most of them with the stylus and tomorrow I'll be getting down to abrading them. Here's a photo of the ones I've done so far, which is already the majority of them. Still just a few smaller ones to remove from the matrix.
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Monday was the last time that I did a split shift before I'm headed off to full retirement at the end of the year, so as usual, I took advantage of the hours in between and headed off to the Kimmeridgian site in the ditch in the upper Danube Valley. Found a few nice things again this time. Well, winter is closing in, so I probably won't be back there again until the springtime now, but it won't be going away, since I seem to be the only collector that's interested in it. Lots of sponge amongst those ammos this time.
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Calcified limestone mold. Pressed flat, which is why I also included another sample from Beuron in the last 2 photos.
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Aptychi mostly existed as bilaterally symmetrical pairs and were part of the anatomy of many ammonites. They are believed to have been either a two-valved closing hatch at the aperture or else a double-plate jaw piece. These particular ones are associated with the ammonite genus Aspidoceras. The photo shows a pair in ventral and dorsal views.
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This microconch is the index fossil for the perayense horizon. The lappet is clearly visible on the limestone mold.
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This little fellow is so small that I had to photograph it under the microscope. It's amazing that I found it at all. They don't get much bigger than this apparently. One of the dwarves under the ammonites. This is the microconch to Cymaceras guembeli.
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Taramelliceras (Metahaploceras) nodosiusculum (Fontannes 1879)
Ludwigia posted a fossil in Ammonoids
Calcified limestone mold. Phragmocone. -
Partially calcified limestone mold. Mostly phragmocone with a bit of body chamber.
