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Genus Hystrichosphaeridium

Species total:
513
Age range:
4100 - 0 MA (obsolete dating)
IRMNG:
find
Name From To Age range
Hystrichosphaeridium oligospinosum Silurian Silurian
Hystrichosphaeridium multispinosum Silurian Late Clintonian
Hystrichosphaeridium fluctuans Silurian Silurian
Hystrichosphaeridium microspinosum Silurian Late Llandoverian
Hystrichosphaeridium piriferum Silurian Late Llandoverian
Hystrichosphaeridium astarte Silurian Early Oligocene
Hystrichosphaeridium staurasteroides Gothlandian Late Clintonian
Hystrichosphaeridium oligofurcatum Silurian Late Llandoverian
Hystrichosphaeridium geometricum Silurian Ypresian
Hystrichosphaeridium semanticum Silurian Silurian
Hystrichosphaeridium sp. Eise.,1938 Silurian Silurian
Hystrichosphaeridium williereae Ashgillian Early Taranakian
Hystrichosphaeridium monacantha Caradocian Caradocian
Hystrichosphaeridium alloiteauii Caradocian Caradocian
Hystrichosphaeridium molodovense Late Ordovician Late Ordovician
Hystrichosphaeridium podolicum Late Ordovician Late Ordovician
Hystrichosphaeridium borracherosum Late Ordovician Late Ordovician