Type species: Arthroclema pulchellum Billings, 1865
This genus includes the species:
Ulrich, 1889 | U. Ordovician | Canada, USA | WoRMS 1399918 | |
Ulrich, 1890 | Ordovician | USA, Estonia | WoRMS 1399919 | |
Ulrich, 1890 | U. Ordovician | Canada | WoRMS 1399920 | |
Lobdell, 1992 | U. Ordovician | USA (N. Dakota) | WoRMS 1399921 | |
(Ulrich, 1890) | U. Ordovician | USA (Minnesota) | WoRMS 1410018 | |
Lobdell, 1992 | U. Ordovician | USA (N. Dakota) | WoRMS 1399922 | |
Billings, 1865 | Ordovician | Canada | WoRMS 1399923 | |
(Ulrich, 1893) | U. Ordovician | USA (Minnesota) | WoRMS 1410019 | |
Goryunova, 1985 | L. Ordovician | Estonia | WoRMS 1399924 |