| A (6 species) |
| Aegirocassis - Early Ordovician |
| Ainiktozoon - Ludlow |
| Anomalocaris - Early to mid Cambrian: Chengjiang-Burgess shale |
| Arthrolycosa - Late Carboniferous to Late Permian |
| Arthropleura - Moscovian-Gzhelian, 315-299 Ma |
| Attercopus - Givetian |
| B (4 species) |
| Baltimartyria - early Eocene |
| Baltocteniza - Early Eocene |
| Brontoscorpio - Upper Silurian |
| Burgessia - Mid Cambrian |
| C (1 species) |
| Canadaspis - Cambrian Series 3 - Burgess Shale |
| D (2 species) |
| Dominickus - Late Eocene |
| Dryinus grimaldii - Burdigalian Burdigalian |
| E (7 species) |
| Electrinocellia - Middle Eocene |
| Electrocteniza - Early Eocene |
| Electromyrmococcus - Burdigalian |
| Eophyllium - Eocene |
| Eoplectreurys - Middle or Late Jurassic, 164 Ma |
| Eriocampa - Early Eocene |
| Eurypterus - Silurian period |
| F (0 species) |
| G (1 species) |
| Gigantoscorpio - Unavailable |
| H (1 species) |
| Hurdia - Mid Cambrian |
| I (0 species) |
| J (1 species) |
| Jaekelopterus - Middle Devonian, 390 Ma |
| K (1 species) |
| Kerygmachela - Cambrian Stage 3 |
| L (1 species) |
| Leanchoilia - Cambrian Stage 3-Middle Cambrian |
| M (4 species) |
| Marrella - Mid Cambrian |
| Megalograptus - Ordovician |
| Megarachne - Gzhelian~306.9-298.9 Ma |
| Mongolarachne - Middle Jurassic, 164 Ma |
| N (1 species) |
| Naraoia - Cambrian Stage 3-Late Silurian |
| O (1 species) |
| Opabinia - Middle Cambrian |
| P (12 species) |
| Palaeophonus - Wenlock-Early Devonian [1][2] |
| Palaeovespa - Eocene 44-34 Ma [1][2] |
| Pambdelurion - Cambrian stage 3 |
| Parastylonurus - Unavailable |
| Parastylotermes - Ypresian - Miocene |
| Peytoia - Early Cambrian |
| Pittsfordipterus - Unavailable |
| Proraphidia - Late Jurassic-Barremian |
| Protostephanus - Late Eocene |
| Pseudosiobla - Early Eocene |
| Pterygotus - Silurian-Devonian |
| Pulmonoscorpius - Visean, 338 Ma |
| Q (0 species) |
| R (0 species) |
| S (2 species) |
| Sanctacaris - Middle Cambrian |
| Sidneyia - Burgess Shale |
| T (2 species) |
| Tainosia - Burdigalian |
| Tamisiocaris - Cambrian, Cambrian Stage 3 |
| U (1 species) |
| Uintascorpio - Lutetian 48.66 Ma |
| V (0 species) |
| W (1 species) |
| Waptia - Middle Cambrian |
| X (0 species) |
| Y (2 species) |
| Yawunik - Unavailable |
| Yohoia - Middle Cambrian |
| Z (0 species) |