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Grapholite vs Graptolite - What's the difference?

grapholite | graptolite |

As nouns the difference between grapholite and graptolite

is that grapholite is any species of slate suitable to be written on while graptolite is any of a group of extinct aquatic colonial invertebrates, of the class graptolithina , from the cambrian and carboniferous periods.

grapholite

English

Noun

  • Any species of slate suitable to be written on.
    • (Webster 1913)

    graptolite

    English

    (wikipedia 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