Graptolithina
Genus

Xiphograptus Cooper et Fortey, 1982

Selection of related publications
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
Maletz, J. 2010. Xiphograptus and the evolution of virgella-bearing graptoloids. Palaeontology 53, 2, 415-439. DOI:10.1111/j.1475-4983.2010.00940.x
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
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.
Skevington, D. 1965. Graptolites from the Ontikan Limestones (Ordovician) of Öland, Sweden. II. Graptoloidea and Graptovermida. Bulletin of the Geological Institutions of the University of Uppsala 43, 1-74.
List of species
1. Xiphograptus formosus (Bulman, 1936) | Dapingian→Darriwilian
2. Xiphograptus lofuensis (Lee, 1961) | Dapingian→Darriwilian
4. Xiphograptus robustus (Ekström, 1937) | Darriwilian→Sandbian
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Classification
Organism groupBiota
KingdomAnimalia
PhylumHemichordata
ClassPterobranchia
SubclassGraptolithina
OrderGraptoloidea
SuborderDichograptina
FamilyPterograptidae
GenusDidymograptellus
Pseudobryograptus
Pterograptus
Xiphograptus
Speciesformosus
lofuensis
norvegicus
patulentis
robustus
GenusYutagraptus
References based on distribution