Type species: Nicholsonella ponderosa Ulrich, 1890
This genus includes the species:
McKinney, 1971 | Ordovician Caradoc=Sandbian-Katian | USA Alabama | WoRMS 1405757 | |
Modzalevskaya, 1977 | Ordovician Ashgill=Katian-Hirnantian | Russia Tuva | WoRMS 1405758 | |
Kopajevich, 1984 | Ordovician Ashgill=Katian-Hirnantian | Mongolia | WoRMS 1405759 | |
Yabe & Hayasaka, 1920 | Ordovician | China | WoRMS 1405760 | |
Ernst & Key, 2007 | Ordovician Caradoc-Ashgill=Sandbian-Katian | France | WoRMS 1405761 | |
Pushkin, 1987 | Late Ordovician | Belarus also Latvia | WoRMS 1438689 | |
Astrova, 1965 | Early Ordovician Tremadocian-Floian | Russia Novaya Zemlaya | WoRMS 1405762 | |
Yang, 1957 | Ordovician Arenig=Floian-Dapingian | China | WoRMS 1405763 | |
McKinney, 1971 | Ordovician Caradoc=Sandbian-Katian | USA Alabama | WoRMS 1405764 | |
Loeblich, 1942 | Ordovician Caradoc=Sandbian-Katian | USA Oklahoma | WoRMS 1405765 | |
Ulrich, 1893 | Ordovician Caradoc=Sandbian-Katian | USA Minnesota | WoRMS 1405766 | |
Astrova, 1965 | Ordovician Caradoc=Sandbian-Katian | Russia Siberia | WoRMS 1405767 | |
Rozman et al., 1970 | Late Ordovician | Russia | WoRMS 1414945 | |
Loeblich, 1942 | Ordovician Caradoc=Sandbian-Katian | USA Oklahoma | WoRMS 1405768 | |
Nekhorosheva, 1965 | Early Ordovician | Russia Novaya Zemlaya | WoRMS 1405769 | |
Wilson, 1921 | Ordovician Caradoc=Sandbian-Katian | Canada Ontario | WoRMS 1405770 | |
McKinney, 1971 | Ordovician Caradoc=Sandbian-Katian | USA Alabama | WoRMS 1405771 | |
Owen, 1965 | Silurian Wenlock | England | WoRMS 1405772 | |
Bassler, 1928 | Ordovician Ashgill=Katian-Hirnantian | Canada Quebec Anticosti Is. | WoRMS 1405773 | |
Yaroshinskaya, 1984 | Late Ordovician | Mongolia | WoRMS 1405774 | |
Cumings & Galloway, 1913 | Ordovician Ashgill=Katian-Hirnantian | USA Indiana | WoRMS 1405775 | |
Astrova, 1965 | Middle Ordovician | Russia Siberia | WoRMS 1405776 | |
Modzalevskaya in Modzalevskaya & Nekhoroshev, 1955 | Late Ordovician Sandbian | Russia Siberia | WoRMS 1405777 | |
Kopajevich, 1984 | Ordovician Ashgill=Katian-Hirnantian | Mongolia | WoRMS 1405778 | |
(Ulrich, 1890) | Ordovician | USA Illinois | WoRMS 1412357 | |
Modzalevskaya, 1977 | Ordovician Caradoc=Sandbian-Katian | Russia Tuva | WoRMS 1405779 | |
Ulrich, 1893 | Ordovician Caradoc=Sandbian-Katian | USA Tennessee | WoRMS 1405780 | |
Ernst & Key, 2007 | Ordovician Caradoc-Ashgill=Sandbian-Katian | France | WoRMS 1405781 | |
Bassler, 1906 | Silurian Wenlock | USA New York | WoRMS 1405782 | |
Ernst & Carrera, 2022 | Late Ordovician Sandbian | Argentina | WoRMS 1590010 | |
(Ulrich, 1883) | Ordovician Caradoc=Sandbian-Katian | USA Ohio | WoRMS 1412358 | |
Modzalevskaya in Modzalevskaya & Nekhoroshev, 1955 | Middle-Late Ordovician | Russia | WoRMS 1405783 | |
Fritz, 1957 | Ordovician Caradoc=Sandbian-Katian | Canada Ontario | WoRMS 1405784 |
Nicholsonella at University of Georgia.
Nicholsonella from Nashville region: at University of Georgia.
Nicholsonella from fossiilid.info.