Genus Helosphaeridium

Species total:
16
Age range:
570 - 177.33 MA (obsolete dating)
IRMNG:
find
Name From To Age range
Helosphaeridium Ordovician Early Carboniferous
Helosphaeridium citrinipeltatum Caradocian Pridolian
Helosphaeridium clavispinulosum Early Paleozoic Pridolian
Helosphaeridium echiniforme Early Llandoverian Early Sheinwoodian
Helosphaeridium guttatum Frasnian Frasnian
Helosphaeridium latispinosum Early Paleozoic Ludlovian
Helosphaeridium malvernense Early Llandoverian Early Llandoverian
Helosphaeridium microclavatum Frasnian Famennian
Helosphaeridium pseudodictyum Middle Llandoverian Gedinnian
Helosphaeridium psilata Frasnian Famennian
Helosphaeridium rarum Arenigian Arenigian
Helosphaeridium sp Llanvirnian Early Toarcian
Helosphaeridium sp. Uute.,1989 Late Arenigian Ashgillian
Helosphaeridium sp.1 Late Llandoverian Late Llandoverian
Helosphaeridium sp.A Frasnian Famennian
Helosphaeridium variospinosum Llandeilian Ashgillian