The name "graptolite" originates from the genus "Graptolithus", which was used by Linnaeus in 1735 for inorganic mineralizations and incrustations which resembled actual fossils. In 1768, in the 12th volume of "Systema Naturae", he included "G. sagittarius" and "G. scalaris", respectively a possible plant fossil and a possible graptolite. In his 1751 "Skånska Resa", he included a figure of a "fossil or graptolite of a strange kind" currently thought to be a type of "Climacograptus" (a genus of biserial graptolites). The term "Graptolithina" was established by Bronn in 1849 and later, "Graptolithus" was officially abandoned in 1954 by the ICZN.