Superfamily
Pterygotoidea Clarke et Ruedemann, 1912
Selection of related publications
Tetlie, O. E. 2007. Distribution and dispersal history of Eurypterida (Chelicerata).  Palaeogeography, Palaeoclimatology, Palaeoecology   252,      557-574. DOI:10.1016/j.palaeo.2007.05.011
Kjellesvig-Waering, E. N. 1964. A synopsis of the Family Pterygotidae Clarke and Ruedemann 1912 (Eurypterida).  Journal of Paleontology   38,      331–361.
List of species
1. Erettopterus carinatus Kjellesvig-Waering, 1979 | Wenlock
2. Erettopterus holmi (Størmer, 1934) | Wenlock
3. Erettopterus laticauda Schmidt, 1883 | Ludlow
4. Erettopterus osiliensis (Schmidt, 1883) | Ludlow
5. Pterygotus impacatus Kjellesvig-Waering, 1964 | Ludlow
6. Truncatiramus serricaudatus Kjellesvig-Waering, 1979 | Wenlock
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Classification
| Organism group | Biota | 
| Kingdom | Animalia | 
| Phylum | Arthropoda | 
| Subphylum | Chelicerata | 
| Order | Eurypterida | 
| Suborder | Eurypterina | 
| Superfamily | Adelophthalmoidea | 
| Eurypteroidea | |
| Megalograptidae | |
| Mixopteroidea | |
| Moselopteroidea | |
| Pterygotoidea | |
| Family | Pterygotidae | 
| Genus | Holmipterus |