Scapulocoracoid-the other side

Last Saturday Tim and I successfully turned over the Diplodocus scapulocoracoid; not a trivial matter, as there are bunches of ways to screw up and damage or destroy the bone. This morning I removed the remaining part of the field jacket. Since we usually open jackets from the bottom, this is the original top surface of the bone.

The white stuff covering the surface of the bone is gauze. This is a technique we used to use to help stabilize the bones (this specimen was collected in 2002). Basically, we would cover the top of the bone with gauze and then paint glue over it. The idea was that the gauze would help hold loose pieces of bone in place.

It actually works reasonably well, as you can see in this specimen. However, it turns out that we can stabilize the bone about as well by just using adhesives without the gauze (although I think it takes a bit more glue that way). Moreover, it turn out that it’s really time consuming to remove the gauze, as it often has to be removed one fiber at a time, so we generally don’t use this technique anymore.

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This entry was posted in Paleontological techniques, Wyoming Excavations and tagged . Bookmark the permalink.

4 Responses to Scapulocoracoid-the other side

  1. Doug says:

    Interesting. Kind of makes the thing look like a giant sheet of burlap. I have heard of newspaper, wet newspaper, and tin foil as separators.

  2. Alton Dooley says:

    We didn’t use the gauze as a separator; it was an additional layer. After the gauze was applied, we used toilet paper over that as a separator, and then put on the plaster (you can see a wad of it at the lower right corner of the lower picture)..

    We still use toilet paper in our Wyoming jackets. It’s cheap, and it serves as extra padding for the bone. We found we couldn’t use tp at Carmel Church. With the wet sediment and high sulfur content there, the tp would wick the sulfur out of the sediment and into the plaster and prevent it from setting properly. We had to switch to foil, which is more expensive and doesn’t provide as much padding.

  3. Alton Dooley says:

    I’m experimenting with a new layout on the blog homepage. Let me know what you think.

  4. Doug says:

    Takes a little longer to load. But it looks more organized, instead of looking like everything is shoved off to the side. I like the new blog roll feature, where it tells you the latest post.

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