Species
Xiphograptus robustus (Ekström, 1937)
Synonymy list
1937 Didymograptus robustus n. sp. — Ekström , pp. 25, fig. 1:1-4; 2:1-2
1964 Didymograptus robustus norvegicus n. ssp. — Berry , pp. 105, fig. 7:1-3
1995 Xiphograptus robustus (Ekström) — Maletz , pp. 250
1997 Xiphograptus robustus (Ekström) — Maletz , pp. 31, fig. Pl 1; C, 12A-I
1998 Xiphograptus robustus (Ekström, 1937) — Maletz , pp. 358, fig. 7G
2010 Xiphograptus robustus (Ekström, 1937) — Maletz , pp. 429, fig. 8H, L
2017 Xiphograptus robustus (Ekström, 1937) — Chen, X. et al. , pp. 120, fig. Figs. 6-12A, C–E, J
Selection of related publications
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. 1997. Graptolites from the Nicholsonograptus fasciculatus and Pterograptus elegans Zones (Abereiddian, Ordovician) of the Oslo Region, Norway. Greifswalder Geowissenschaftliche Beiträge 4, 5-98.
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Classification
| Organism group | Biota |
| Kingdom | Animalia |
| Phylum | Hemichordata |
| Class | Pterobranchia |
| Subclass | Graptolithina |
| Order | Graptoloidea |
| Suborder | Dichograptina |
| Family | Pterograptidae |
| Genus | Xiphograptus |
| Species | formosus |
| lofuensis | |
| norvegicus | |
| patulentis | |
| robustus |
References based on distribution
- Maletz, 2010a Fågelsång outcrop, Sweden Middle Ordovician
- Maletz, 2010a Ordovician
- Maletz, 1997c Slemmestad, Norway