As a noun graptolite
is any of a group of extinct aquatic colonial invertebrates, of the class
graptolithina , from the cambrian and carboniferous periods.
As an adjective sicula is
.
Other Comparisons: What's the difference?
graptolite Noun
( en noun)
Any of a group of extinct aquatic colonial invertebrates, of the class Graptolithina , from the Cambrian and Carboniferous periods
*2004 , (Richard Fortey), The Earth , Folio Society 2011, p. 70:
*:The samples were black shale, and on the shales were some ancient fossils called graptolites .
See also
* sicula
* prosicula
* rhabdosome
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sicula English
Noun
(siculae)
(zoology) The hard, triangular apex of a graptolite from which it grows.
Derived terms
* prosicula
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