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Genus Hystrichosphaeridium

Species total:
513
Age range:
4100 - 0 MA (obsolete dating)
IRMNG:
find
Name From To Age range
Hystrichosphaeridium minuta Ordovician Silurian
Hystrichosphaeridium peritropum Arenigian Arenigian
Hystrichosphaeridium sibiricum Middle Ordovician Late Ordovician
Hystrichosphaeridium tshunense Middle Ordovician Middle Ordovician
Hystrichosphaeridium anthophorum Middle Ordovician Albian
Hystrichosphaeridium eisenackianum Middle Ordovician Middle Ordovician
Hystrichosphaeridium viticulosum Middle Ordovician Middle Ordovician
Hystrichosphaeridium maslovii Middle Ordovician Middle Ordovician
Hystrichosphaeridium brevifurcatum Llanvirnian Early Homerian
Hystrichosphaeridium sectum Llandeilian Llandeilian
Hystrichosphaeridium ocuminatum Llandeilian Llandeilian
Hystrichosphaeridium lucidum Llandeilian Llandeilian
Hystrichosphaeridium reticulatum Llandeilian Llandeilian
Hystrichosphaeridium scabridum Llandeilian Llandeilian
Hystrichosphaeridium bipartibilum Llandeilian Llandeilian
Hystrichosphaeridium corniformis Llandeilian Llandeilian
Hystrichosphaeridium picorricum Late Ordovician Emsian