Sigmagraptidae

Sigmagraptidae is an extinct family of graptolites.

Genera
List of genera from Maletz (2014):


 * †Acrograptus Tzaj, 1969
 * †Azygograptus Nicholson & Lapworth, 1875 in Nicholson (1875)
 * †Eoazygograptus Obut & Sennikov, 1984
 * †Eotetragraptus Bouček & Přibyl, 1951
 * †Etagraptus Ruedemann, 1904
 * †Goniograptus M’Coy, 1876
 * †Hemigoniograptus Jin & Wang, 1977
 * †Jiangnanograptus Xiao & Chen, 1990
 * †Jishougraptus Ge, 1988
 * †Keblograptus Riva, 1992
 * †Kinnegraptus Skoglund, 1961
 * †Laxograptus Cooper & Fortey, 1982
 * †Maeandrograptus Moberg, 1892
 * †Metazygograptus Obut & Sennikov, 1984
 * †Oslograptus Jaanusson, 1965
 * †Paradelograptus Erdtmann, Maletz & Gutiérrez-Marco, 1987
 * †Paraulograptus Bouček, 1973
 * †Pendeosalicograptus Jiao, 1981
 * †Perissograptus Williams & Stevens, 1988
 * †Praegoniograptus Rickards & Chapman, 1991
 * †Prokinnegraptus Mu, 1974
 * †Sigmagraptus Ruedemann, 1904
 * †Taishanograptus Li & Ge, 1987 in Li, Ge & Chen (1987)
 * †Trichograptus Nicholson, 1876
 * †Wuninograptus Ni, 1981
 * †Yushanograptus Chen, Sun & Han, 1964