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transfer technique
The transfer technique is a technique to stabilise and prepare fossils by partially embedding them in plastic resins (i.e. epoxy or polyester) in order to preserve the position of the preserved fossil once all of the rock matrix is subsequently removed. Notable examples of this technique are fossils preserved in oil shale (such as those from the Messel Pit) or other substrates that will deteriorate under atmospheric conditions, or fossils preserved in acid-soluble carbonates (such as fossils from the Santana Formation).〔Maisey, J.G., Rutzky, I., Blum, S. & W. Elvers (1991): Laboratory Preparation Techniques. In Maisey, j:G. (ed): ''Santana Fossils: An Illustrated Atlas'', Tfh Pubns Inc.ISBN 0866225498. pp 99–103.〕 The technique is notable for delivering exquisite preparations of both very high scientific and display value.
==Development==
The method was pioneered by Harry Toombs and A.E. Rixon of the British Museum in 1950 with the introduction of the technique as a means of extracting fish fossils from acid-soluble carbonates. The technique permitted the preparation of delicate, fragmented, or otherwise unstable fossils by the removal of virtually all of the surrounding rock matrix. The resulting preparation retains the position of all of the parts of the fossil in the position in which they were preserved in the fossil. While the method developed by Toombs and Rixon calls for plastic resins, other substances, such as a mix of ground chalk and beeswax have been used.
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