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Genus Archaeohystrichosphaeridium

Species total:
126
Age range:
4100 - 141 MA (obsolete dating)
IRMNG:
find
Name From To Age range
Archaeohystrichosphaeridium cuspidatum Middle Cambrian Early Arenigian
Archaeohystrichosphaeridium sp.A Tremadocian Early Arenigian
Archaeohystrichosphaeridium operculatum Cambrian Early Ordovician
Archaeohystrichosphaeridium duplicativum Late Proterozoic Early Ordovician
Archaeohystrichosphaeridium ianischewskyi Late Precambrian Arenigian
Archaeohystrichosphaeridium triviale Middle Cambrian Arenigian
Archaeohystrichosphaeridium pellicidum Ordovician Early Llanvirnian
Archaeohystrichosphaeridium oblongum Sinian Llanvirnian
Archaeohystrichosphaeridium patentissimum Middle Cambrian Llanvirnian
Archaeohystrichosphaeridium capillatum Middle Cambrian Llanvirnian
Archaeohystrichosphaeridium setigerfurcatum Early Ordovician Early Llandeilian
Archaeohystrichosphaeridium cuneidentatum Early Cambrian Middle Ordovician
Archaeohystrichosphaeridium pungens Early Cambrian Llandeilian
Archaeohystrichosphaeridium semiclausum Paleozoic Llandeilian
Archaeohystrichosphaeridium czarnockii Ordovician Caradocian
Archaeohystrichosphaeridium minor Early Paleozoic Ordovician
Archaeohystrichosphaeridium arenigum Precambriam Ordovician