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Genus Archaeohystrichosphaeridium

Species total:
126
Age range:
4100 - 141 MA (obsolete dating)
IRMNG:
find
Name From To Age range
Archaeohystrichosphaeridium capillatum Middle Cambrian Llanvirnian
Archaeohystrichosphaeridium cellulare Precambriam Middle Eifelian
Archaeohystrichosphaeridium cinctum Tremadocian Early Permian
Archaeohystrichosphaeridium complicatum Cambrian Cambrian
Archaeohystrichosphaeridium contortuplicatum Early Ordovician Early Ordovician
Archaeohystrichosphaeridium coroniforme Middle Cambrian Late Cambrian
Archaeohystrichosphaeridium crispatum Early Cambrian Early Cambrian
Archaeohystrichosphaeridium cuneidentatum Early Cambrian Middle Ordovician
Archaeohystrichosphaeridium curvativum Middle Cambrian Middle Cambrian
Archaeohystrichosphaeridium cuspidatum Middle Cambrian Early Arenigian
Archaeohystrichosphaeridium czarnockii Ordovician Caradocian
Archaeohystrichosphaeridium dasyacanthum Early Cambrian Late Cambrian
Archaeohystrichosphaeridium deflandrei Emsian Strunian
Archaeohystrichosphaeridium delcatum Middle Cambrian Middle Cambrian
Archaeohystrichosphaeridium dentatum Late Cambrian Ashgillian
Archaeohystrichosphaeridium denticulatum Late Proterozoic Tremadocian
Archaeohystrichosphaeridium diadromum Late Cambrian Late Cambrian