Genus Sphaerochitina

Species total:
126
Age range:
4100 - 289 MA (obsolete dating)
IRMNG:
find
Name From To Age range
Sphaerochitina taugourdeaui Virgilian Virgilian
Sphaerochitina transitiformis Wenlockian Wenlockian
Sphaerochitina undosa Late Ordovician Late Ordovician
Sphaerochitina valentini Ludlovian Ludlovian
Sphaerochitina vetusta Late Ordovician Late Ordovician
Sphaerochitina vitrea Early Paleozoic Ludlovian
Sphaerochitina vulgaris Arenigian Llandeilian