Hystrichosphaeridium

Genus Hystrichosphaeridium

Species total:
513

Age range:
4100 - 0 MA (obsolete dating)

IRMNG:
find

Name	From	To
Hystrichosphaeridium monstruosum	Early Ordovician	Early Cenomanian
Hystrichosphaeridium aculeatum	Ordovician	Ordovician
Hystrichosphaeridium trispiculare	Ordovician	Caradocian
Hystrichosphaeridium spiculare	Ordovician	Caradocian
Hystrichosphaeridium wimanii	Tremadocian	Llandoverian
Hystrichosphaeridium hystrichoreticulatum	Ordovician	Ordovician
Hystrichosphaeridium polyradiatum	Early Ordovician	Middle Ordovician
Hystrichosphaeridium authoforum	Early Ordovician	Early Ordovician
Hystrichosphaeridium bimarginatum	Ordovician	Middle Ordovician
Hystrichosphaeridium hirsutum	Ordovician	Eocene
Hystrichosphaeridium monacanthum	Ordovician	Late Ordovician
Hystrichosphaeridium bifurcatum	Early Ordovician	Early Ordovician
Hystrichosphaeridium ramusculosum	Tremadocian	Givetian
Hystrichosphaeridium rjabininii	Ordovician	Ordovician
Hystrichosphaeridium stellaeforme	Early Ordovician	Early Ordovician
Hystrichosphaeridium microcystis	Ordovician	Ordovician
Hystrichosphaeridium zonale	Early Ordovician	Early Ordovician