Transfer-Preparation of a Liangwangshania
Positive side of the "unlucky" split: Some parts of the fossil are still covered
Positive side of the "unlucky" split:
Some parts of the fossil are
still covered
Negative part: the razor-thin remains of the fossil
needs to be transferred back to the positive side
Negative part: the razor-thin remains
of the fossil needs to be transferred
back to the positive side
After gluing the pieces back together, the uncovering can be done
After gluing the pieces back together,
the uncovering can be done
Fortunately the gluing went very well -
the fossil remains are much thinner than the layer of glue..
Fortunately the gluing went very
well - the fossil remains are much
thinner than the layer of glue..
The finished specimen
The finished specimen
The difficult and very delicate gluing is almost invisible - The Fossil is about 0,9 inches long
The difficult and very delicate gluing is
almost invisible - The Fossil is about
0,9 inches long
Details become more clear in wet condition
Details become more clear in wet condition
Liangwangshania is an incredibly rare arthropod from the famous Chengjiang-Biota, which contains some of the most bizarre and extremely well preserved fossils. The soft slate is relatively easy for preparation, as long as there is a good separation between fossil and matrix. Although one needs very calm hands that can work sensitively enough to preserve the tiny details.
This specimen was badly split up on two pieces of rock. That kind of “unlucky” split has fossil remains on both sides, so that they have to be glued back together. This task can be very challenging, as a very precise gluing is necessary in order to prepare the fossil afterwards. In this case the fossil is only a fracture of a millimetre thick, so that the layer of glue is actually thicker. Fortunately the gluing went just as planned and the Liangwangshania could be properly prepared.
Fossil: Liangwangshania biloba
Locality: Chengjiang (China)
Formation: Lower Cambrian, Yuanshan-Member
Total Length: 0.9 inch
Collection: York Yuxi Wang
Work required: 3 hours