Prosicula is a see also of graptolite.
As a noun graptolite is
any of a group of extinct aquatic colonial invertebrates, of the class graptolithina
, from the cambrian and carboniferous periods.
Not English Prosicula has no English definition. It may be misspelled.
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 .