Hystrichosphaeridium

Genus Hystrichosphaeridium

Species total:
513

Age range:
4100 - 0 MA (obsolete dating)

IRMNG:
find

Name	From	To
Hystrichosphaeridium group b	Middle Clintonian	Late Clintonian
Hystrichosphaeridium heteracanthum	Cretaceous	Oligocene
Hystrichosphaeridium hexaster	Late Devonian	Late Devonian
Hystrichosphaeridium hibbardii	Early Clintonian	Early Clintonian
Hystrichosphaeridium hillii	Early Cretaceous	Early Cretaceous
Hystrichosphaeridium himalayense	Late Cretaceous	Middle Eocene
Hystrichosphaeridium hippocrepicum	Late Precambrian	Late Precambrian
Hystrichosphaeridium hirsutoides	Middle Cambrian	Middle Cambrian
Hystrichosphaeridium hirsutum	Ordovician	Eocene
Hystrichosphaeridium hirundo	Early Cretaceous	Early Cretaceous
Hystrichosphaeridium hoffmeisteri	Nd	Nd
Hystrichosphaeridium horridum	Valanginian	Danian
Hystrichosphaeridium huecospinosum	Devonian	Devonian
Hystrichosphaeridium huguoniotii	Cretaceous	Turonian
Hystrichosphaeridium hymenoferum	Ordovician	Ordovician
Hystrichosphaeridium hystrichoreticulatum	Ordovician	Ordovician
Hystrichosphaeridium ichikawaii	Middle Miocene	Middle Miocene