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Some Callovian finds


Ludwigia

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That last one is very interesting. It seems almost strange how the septa walls almost look fluid. I never imagined them looking like that. 

What we see here are molds and casts. The septa walls often don’t have that much definition since most are limestone, chalk or even mud in my area.

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5 hours ago, KimTexan said:

That last one is very interesting. It seems almost strange how the septa walls almost look fluid. I never imagined them looking like that. 

What we see here are molds and casts. The septa walls often don’t have that much definition since most are limestone, chalk or even mud in my area.

The shells in this horizon are often well-preserved, or rather exist to the present in the altered form of calcite. This allows for much better definition than the typical limestone steinkerns of your cretaceous finds, so one can get a relatively true picture of the forms of the septal walls. They are more filigrane at the center than the outer shell, which also explains why they are sometimes already dissolved away or don't hold up to abrading. This is why I had to move slowly at low pressure.

 

Greetings from the Lake of Constance. Roger

http://www.steinkern.de/

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always nice to see your preppwork Roger :) great work as usual :D

 

I realy should invest in an abraider, but it wont be possible as long as I live on an appartment :(

 

 

 

growing old is mandatory but growing up is optional.

 

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14 hours ago, Manticocerasman said:

always nice to see your preppwork Roger :) great work as usual :D

 

I realy should invest in an abraider, but it wont be possible as long as I live on an appartment :(

 

 

 

Thanks Kevin. Yes an abrader would make a world of difference. You could get yourself a silent compressor, coudn't you? Or is that too expensive?

 

Greetings from the Lake of Constance. Roger

http://www.steinkern.de/

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6 minutes ago, Ludwigia said:

Thanks Kevin. Yes an abrader would make a world of difference. You could get yourself a silent compressor, coudn't you? Or is that too expensive?

I got a silent compressor, but it is the dust I am concerned about. 

And I dont realy know what to buy to get started

growing old is mandatory but growing up is optional.

 

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18 minutes ago, Manticocerasman said:

I got a silent compressor, but it is the dust I am concerned about. 

And I dont realy know what to buy to get started

Don't you have a relatively airtight prep box? I also recently acquired this. It does a wonderful job at keeping the air clean and is no louder than a refrigerator. Here is also a German offer, which is a bit cheaper.                   

 

Greetings from the Lake of Constance. Roger

http://www.steinkern.de/

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There were 3 more ammonites left, but 2 of them ended up in the disposal bin. As usual, I save the worst until last. At least one Macrocephalites turned out reasonably well. I managed to expose some of the septal walls again. Here again from start to finish.

 

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  • I found this Informative 2

 

Greetings from the Lake of Constance. Roger

http://www.steinkern.de/

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1 hour ago, Kane said:

That did turn out quite well, and has a bit of character to boot. 

It certainly does look fossilized, doesn't it?

 

Greetings from the Lake of Constance. Roger

http://www.steinkern.de/

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9 hours ago, Ludwigia said:

Don't you have a relatively airtight prep box? I also recently acquired this. It does a wonderful job at keeping the air clean and is no louder than a refrigerator. Here is also a German offer, which is a bit cheaper.                   

no prep box, I still do anything manually on a prep tabel. the only tool on the compressor is an air scribe.

This will be a project for the future, making a decent prep box with extraction and a sandblaster.

 

  • I found this Informative 1

growing old is mandatory but growing up is optional.

 

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