Hystrichosphaeridium

Genus Hystrichosphaeridium

Species total:
513

Age range:
4100 - 0 MA (obsolete dating)

IRMNG:
find

Name	From	To
Hystrichosphaeridium sp. Down.,1958	Tremadocian	Tremadocian
Hystrichosphaeridium sp. Deb,1970	Tertiary	Tertiary
Hystrichosphaeridium sp. Cran.et al,1960	Late Cretaceous	Oligocene
Hystrichosphaeridium sp. Bisw.,1962	Late Cretaceous	Late Cretaceous
Hystrichosphaeridium sp. Balt.,1969	Late Hauterivian	Early Cenomanian
Hystrichosphaeridium sp	Precambriam	Recent
Hystrichosphaeridium siphoniphorum	Late Hauterivian	Early Oligocene
Hystrichosphaeridium simulatum	Middle Clintonian	Middle Clintonian
Hystrichosphaeridium simplicispinum	Jurassic	Eocene
Hystrichosphaeridium simplex	Late Cretaceous	Middle Miocene
Hystrichosphaeridium siluricum	Early Ludlovian	Early Ludlovian
Hystrichosphaeridium sibiricum	Middle Ordovician	Late Ordovician
Hystrichosphaeridium shimizui	Middle Miocene	Middle Miocene
Hystrichosphaeridium sheppeyense	Eocene	Middle Eocene
Hystrichosphaeridium sexradiatum	Late Cambrian	Tremadocian
Hystrichosphaeridium setigerfurcatum	Cambrian	Llanvirnian
Hystrichosphaeridium sergipense	Early Eocene	Early Eocene