Definitions
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun Plural form of
periostracum .
Etymologies
Sorry, no etymologies found.
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Examples
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Geerat Vermeij1 noted that many snails that inhabit cold waters have very thick periostraca that help protect the shell from dissolving.
Archive 2006-03-01 AYDIN 2006
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Old shells are almost always white, because they have lost their periostraca.
Archive 2006-03-01 AYDIN 2006
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