Hystrichosphaeridium

Genus Hystrichosphaeridium

Species total:
513

Age range:
4100 - 0 MA (obsolete dating)

IRMNG:
find

Name	From	To
Hystrichosphaeridium borracherosum	Late Ordovician	Late Ordovician
Hystrichosphaeridium podolicum	Late Ordovician	Late Ordovician
Hystrichosphaeridium castanea	Late Ordovician	Late Ordovician
Hystrichosphaeridium malum	Late Ordovician	Late Ordovician
Hystrichosphaeridium trisulcum	Late Ordovician	Late Ordovician
Hystrichosphaeridium picorricum	Late Ordovician	Emsian
Hystrichosphaeridium monacantha	Caradocian	Caradocian
Hystrichosphaeridium alloiteauii	Caradocian	Caradocian
Hystrichosphaeridium williereae	Ashgillian	Early Taranakian
Hystrichosphaeridium intermedium	Silurian	Middle Eocene
Hystrichosphaeridium bohemicum	Silurian	Silurian
Hystrichosphaeridium gotlandicum	Silurian	Late Llandoverian
Hystrichosphaeridium eoplanctonicum	Llandoverian	Llandoverian
Hystrichosphaeridium oligospinosum	Silurian	Silurian
Hystrichosphaeridium multispinosum	Silurian	Late Clintonian
Hystrichosphaeridium fluctuans	Silurian	Silurian
Hystrichosphaeridium microspinosum	Silurian	Late Llandoverian