[Nhcoll-l] cracking and disintegration of molluscan shells

[Callomon,Paul]

We keep Paryphantas in a mixture of ethanol and glycerine; pure ethanol will probably cause the periostracum to delaminate. The glycerine does not affect DNA, as far as I know.

PC

Paul Callomon
Collection Manager, Malacology, Invertebrate Paleontology and General Invertebrates
[X]
Academy of Natural Sciences of Drexel University, Philadelphia
1900 Benjamin Franklin Parkway, Philadelphia PA 19103-1195, USA
callomon at ansp.org<mailto:callomon at ansp.org> Tel 215-405-5096 - Fax 215-299-1170




_____________________________________________
From: nhcoll-l-bounces at mailman.yale.edu [mailto:nhcoll-l-bounces at mailman.yale.edu] On Behalf Of Ron Eng
Sent: Wednesday, March 04, 2015 3:06 PM
To: nhcoll-l at mailman.yale.edu
Subject: [Nhcoll-l] cracking and disintegration of molluscan shells


Greetings,

It has been common to either oil or immerse (in glycerine) specimens that have thin shells and thick periostracums; for example, Paryphanta snails and unionids.

What is the best practice?

Regards,
Ron

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Ronald Eng
Geology & Paleontology Collections Manager
Burke Museum of Natural History and Culture
University of Washington
Box 353010
Seattle, WA 98195-3010

e-mail: rceng at uw.edu<mailto:rceng at u.washington.edu>
telephone: 206.543.6776
fax: 206.685.3039

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