Isograptidae
Isograptidae is an extinct family of graptolites.
Genera
List of genera from Maletz :- †Arienigraptus Yu & Fang, 1981
- †Cardiograptus Harris & Keble, 1916 in Harris
- †Isograptus Moberg, 1892
- †Oncograptus Hall, 1914
- †Paracardiograptus Mu & Lee, 1958
- †Parisograptus Chen & Zhang, 1996
- †Procardiograptus Xiao, Xia & Wang 1985
- †Proncograptus Xiao, Xia & Wang, 1985
- †Pseudisograptus Beavis, 1972
- †Xiushuigraptus Yu & Fang, 1983