Genus Acanthosphaeridium

Species total:
7
Age range:
500 - 370 MA (obsolete dating)
IRMNG:
find
Name From To Age range
Acanthosphaeridium aciculare Early Ordovician Early Ordovician
Acanthosphaeridium corrugativum Early Ordovician Early Ordovician
Acanthosphaeridium cuspidatum Llandeilian Llandeilian
Acanthosphaeridium gdowia Early Ordovician Late Ordovician
Acanthosphaeridium hirsutum Arenigian Arenigian
Acanthosphaeridium pilosum Arenigian Arenigian
Acanthosphaeridium sp Ordovician Early Devonian