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Genus Hystrichosphaeridium

Species total:
513
Age range:
4100 - 0 MA (obsolete dating)
IRMNG:
find
Name From To Age range
Hystrichosphaeridium duplum Late Valanginian Maastrichtian
Hystrichosphaeridium xanthiopyxides Late Oxfordian Maastrichtian
Hystrichosphaeridium proprium Late Campanian Late Maestrichtian
Hystrichosphaeridium albertense Early Cretaceous Late Cretaceous
Hystrichosphaeridium readei Albian Senonian
Hystrichosphaeridium dowlingii Albian Maestrichtian
Hystrichosphaeridium atlasiense Cretaceous Maestrichtian
Hystrichosphaeridium sp.3 Stre.et al,1977 Late Campanian Early Maastrichtian
Hystrichosphaeridium sp.1 Stre.et al,1977 Late Campanian Early Maastrichtian
Hystrichosphaeridium sp.2 Stre.et al,1977 Late Campanian Early Maastrichtian
Hystrichosphaeridium conispiniferum Turonian Campanian
Hystrichosphaeridium sp.A Dave.,1978 Teratan Piripauan
Hystrichosphaeridium striatoconum Albian Campanian
Hystrichosphaeridium paracostatum Albian Campanian
Hystrichosphaeridium echinatum Turonian Campanian
Hystrichosphaeridium pulcherrimum Late Jurassic Late Campanian
Hystrichosphaeridium asymmetricum Middle Clintonian Santonian