Callograptus is a genus of graptolites.
References
Two species of the genus Callograptus Hall, 1865 (Graptolithina, Dendroidea) from the Lower Ordovician of Bohemia. Kraft J, Bulletin of Geosciences, volume 74, issue 1, pages 21–26
External links
Callograptus elegans at biolib.cz