Diplograptus

Diplograptus Temporal range: Cambrian To Devonian 505 To 380 Ma
D. simplex
Scientific classification
Kingdom:	Animalia
Phylum:	Hemichordata
Class:	Graptolithina
Order:	Graptoloidea
Family:	Diplograptidae
Genus:	Diplograptus Hisinger, 1837

Diplograptus was a Cambrian genus of graptolites.[1]

References

1. Charles Doolittle Walcott (1886). Second contribution to the studies on the Cambrian faunas of North America. Vol. 30 of Geological Survey bulletin. Govt. Print. Off. pp. 1–369.