Type species: Ptilodictya fimbriata James, 1878
Species not recognisable? (Karklins, 1983)
This genus includes the species:
(Nekhoroshev, 1961) | Late Ordovician | Russia Siberia | WoRMS 1437642 | |
(Nekhoroshev, 1961) | Late Ordovician Ashgill | Russia Siberia | WoRMS 1437643 | |
(Nekhoroshev, 1961) | Late Ordovician Ashgill | Russia Siberia | WoRMS 1437644 | |
(Nekhoroshev, 1961) | Late Ordovician Caradocian | Russia Siberia | WoRMS 1437646 | |
(Billings, 1866) | Ordovician-Silurian | Canada | WoRMS 1437766 | |
(Nomen dubium) |
(James, 1878) | Silurian | USA Ohio | WoRMS 1437767 |
Kopajevich, 1984 | Late Ordovician Ashgill | Mongolia | WoRMS 1437768 | |
(Schoenmann, 1926) | Ordovician Llandeilo-Caradoc | Russia Siberia | WoRMS 1437769 | |
(Ulrich, 1893) | Late Ordovician Caradocian | USA, Canada | WoRMS 1437770 | |
(Nekhoroshev, 1961) | Late Ordovician Caradoc-Ashgill | Russia Siberia | WoRMS 1437771 | |
(Nekhoroshev, 1961) | Late Ordovician Caradoc | Russia Siberia | WoRMS 1437772 | |
(Nekhoroshev, 1961) | Silurian Llandovery | Russia Siberia | WoRMS 1437773 | |
(Hall & Whitfield, 1875) | Silurian Llandovery | USA Ohio | WoRMS 1437774 | |
(Nekhoroshev, 1961) | Silurian Llandovery | Russia Siberia | WoRMS 1437775 | |
(Nekhoroshev, 1961) | Silurian Ashgill | Russia Siberia | WoRMS 1437776 | |
(Hall, 1883) | Silurian Llandovery | USA Ohio | WoRMS 1437777 | |
Astrova, 1965 | Late Ordovician Caradaoc | Russia | WoRMS 1437778 | |
(Nekhoroshev, 1955) | Ordovician-Silurian | Russia | WoRMS 1437779 | |
(Nekhoroshev, 1961) | Late Ordovician Ashgill | Russia Siberia | WoRMS 1437780 | |
(Nekhorosheva, 1970) | Ordovician? | Russia | WoRMS 1437781 | |
(Nekhoroshev, 1955) | Late Ordovician Caradoc | Russia | WoRMS 1437782 | |
(Nekhoroshev, 1961) | Ordovician Llandeilo-Caradoc | Russia | WoRMS 1437783 |
This information is based upon various sources, but no personal knowledge. I am indebted to the late Alan Horowitz for his compilation, and to Dr. J. Pachut.
I would be grateful for corrections to, or critical reviews of this information. This is not a 'final' version (an impossible ideal), but a working document.