Hystrichosphaeridium

Genus Hystrichosphaeridium

Species total:
513

Age range:
4100 - 0 MA (obsolete dating)

IRMNG:
find

Name	From	To
Hystrichosphaeridium gotlandicum	Silurian	Late Llandoverian
Hystrichosphaeridium wimanii	Tremadocian	Llandoverian
Hystrichosphaeridium microspinosum	Silurian	Late Llandoverian
Hystrichosphaeridium piriferum	Silurian	Late Llandoverian
Hystrichosphaeridium balticum	Early Ordovician	Late Ordovician
Hystrichosphaeridium sibiricum	Middle Ordovician	Late Ordovician
Hystrichosphaeridium monacanthum	Ordovician	Late Ordovician
Hystrichosphaeridium trispiculare	Ordovician	Caradocian
Hystrichosphaeridium spiculare	Ordovician	Caradocian
Hystrichosphaeridium arrectum	Ordovician	Early Caradocian
Hystrichosphaeridium longispinosoides	Late Cambrian	Middle Ordovician
Hystrichosphaeridium polyradiatum	Early Ordovician	Middle Ordovician
Hystrichosphaeridium bimarginatum	Ordovician	Middle Ordovician
Hystrichosphaeridium cognitum	Ordovician	Middle Ordovician
Hystrichosphaeridium setigerfurcatum	Cambrian	Llanvirnian
Hystrichosphaeridium sexradiatum	Late Cambrian	Tremadocian
Hystrichosphaeridium baciferum	Late Proterozoic	Cambrian