Family
Sigmagraptidae Cooper et Fortey, 1982
Selection of related publications
Maletz, J. 2023. The Lower Ordovician (Tremadocian to Floian) graptolite fauna of Hunneberg, Västergötland, Sweden.  Fossils and Strata   69,      1-140.  Scandinavian University Press.  DOI:10.18261/9788215070872-2023-01
Maletz, J., Ahlberg, P. 2021. Dapingian to lower Darriwilian (Middle Ordovician) graptolite biostratigraphy and correlation of the Krapperup drill core, Scania, Sweden.  GFF   143,   1,   16-39. DOI:10.1080/11035897.2020.1822439
Vento, B. A., Toro, B. A., Maletz, J. 2012. New insights into the paleobiogeography of the Early Ordovician graptolite fauna of northwestern Argentina.  Comptes Rendus Palevol   11,   5,   345-355. DOI:10.1016/j.crpv.2012.02.002
Egenhoff, S., Maletz, J. 2007. Graptolites as indicators of maximum flooding surfaces in monotonous deep-water self successions.  Palaios   22,   4,   373-383. DOI:10.2110/palo.2005.p05-096r
Maletz, J. 2005. Early Middle Ordovician graptolite biostratigraphy of the Lovisefred and Albjära drill cores (Scania, southern Sweden).  Palaeontology   48,   4,   763-780. DOI:10.1111/j.1475-4983.2005.00482.x
Bergström, S. M., Löfgren, A., Maletz, J. 2004. The GSSP of the Second (Upper) Stage of the Lower Ordovician Series: Diabasbrottet at Hunneberg, Province of Västergötland, Southwestern Sweden.  Episodes   27,   4,   265-272.
Maletz, J. 1997. Graptolites from the Nicholsonograptus fasciculatus and Pterograptus elegans Zones (Abereiddian, Ordovician) of the Oslo Region, Norway.  Greifswalder Geowissenschaftliche Beiträge   4,      5-98.
Beckly, A. J., Maletz, J. 1991. The Ordovician graptolites Azygograptus and Jishougraptus in Scandinavia and Britain.  Palaeontology   34,   4,   887-925.
Lindholm, K. 1991. Ordovician graptolites from the Early Hunneberg of southern Scandinavia.  Palaeontology   34,   2,   283-327.
Erdtmann, B.-D., Maletz, J., Gutierrez Marco, J. C. 1987. The new Early Ordovician (Hunneberg Stage) graptolite genus Paradelograptus (Kinnegraptidae), its phylogeny and biostratigraphy.  Paläontologische Zeitschrift   61,   1/2,   109-131. DOI:10.1007/BF02985945
Kaljo, D. 1974. On graptolite zones of Tremadoc and Arenig of Pribaltic and Moscow syneclises.  Graptolites of the USSR, pp. 31-36.   Nauka. 
Jaanusson, V. 1965. Two multiramous graptoloids from the Lower Didymograptus Shale of Scandinavia.  GFF   86,   4,   413-432. DOI:10.1080/11035897.1965.9626393
List of species
2. Acrograptus filiformis (Tullberg, 1880) | Lower Ordovician
5. Acrograptus pusillus (Tullberg, 1880) | Lower Ordovician
6. Azygograptus eivionicus Elles, 1922 | Ordovician
7. Azygograptus ellesi Monsen, 1937 | Ordovician
8. Azygograptus groenwalli Monsen, 1937 | Ordovician
9. Azygograptus hicksii Hopkinson, 1875 | Ordovician
10. Azygograptus lapworthi Nicholson, 1875 | Ordovician
11. Azygograptus minutus Beckly et Maletz, 1991 | Ordovician
12. Azygograptus suecicus Moberg, 1892 | Dapingian
14. Jishougraptus hunnebergensis Maletz, 2023 | Tremadocian
15. Jishougraptus lindholmae Beckly et Maletz, 1991 | Ordovician
16. Jishougraptus novus Beckly et Maletz, 1991 | Ordovician
17. Kinnegraptus kinnekullensis Skoglund, 1961 | Dapingian
19. Maeandrograptus schmalenseei Moberg, 1892 | Dapingian
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Classification