Darren Tanke’s Gorgosaurus preparation 16: more cleaning

Final work on the Gorgosaurus continues and I’m on track for being ready for the planned mid-February for molding of the specimen. At this stage, bare areas of the jacket are being glued and sand from the Gorgosaurus block sprinkled on to the wet glue to create “rock texture”. This is being done so the latex mold is of rock or simulated rock and not the bare plaster jacket. A few more belly ribs have also been found and most of the nice ilium uncovered. The ilium looked awful at first with a bad crack running through it but it has been saved. The attached pictures speak volumes as to how nice this specimen is. There is little more to show preparation-wise on this specimen (until the mold is started) so the future updates will be more photographic in nature as the specimen nears completion.

All photos here and in the series are owned by Darren Tanke and the Royal Tyrrell Museum.

4 Responses to “Darren Tanke’s Gorgosaurus preparation 16: more cleaning”


  1. 1 Janet M Vandenburgh 14/01/2011 at 6:49 am

    Darren – thanks for the photos. Gives sort-of an idea how difficult & painstaking recovery is.

  2. 2 Lauren 14/01/2011 at 7:10 am

    I was wondering, once you make a mold, how many casts can you make? How long does a mold last?

  3. 3 Darren Tanke 15/01/2011 at 3:27 am

    Lauren, molds last a varying time. If they are made of latex (as most of the ones at the Royal Tyrrell Museum are), and if they are carefully washed after use, stored in a dark room- temperature place, and casts from them are made carefully (too much catalyst in resin = heat = bad for mold), they can last a long time. Some of our molds are 25 years old and had yielded dozen of casts apiece with the potential for many more casts in the future.


  1. 1 Darren Tanke’s Gorgosaurus preparation: final roundup « Dave Hone's Archosaur Musings Trackback on 22/02/2011 at 9:00 am
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