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Webster 1913 Edition
Graptolite
Grap′to-lite
,Noun.
[NL, Graptolithus, from Gr. [GREEK] is engraved, written (
γράφειν
to write) + [GREEK] stone.] (Paleon.)
One of numerous species of slender and delicate fossils, of the genus
Graptolites
and allied genera, found in the Silurian rocks. They belong to an extinct group (Graptolithina
) supposed to be hydroids.