Genus Archaeoperisaccus

Species total:
55
Age range:
4100 - 115.67 MA (obsolete dating)
IRMNG:
find
Name From To Age range
Archaeoperisaccus type I Frasnian Frasnian
Archaeoperisaccus variabilis Early Frasnian Early Frasnian
Archaeoperisaccus verrucosus Paleozoic Frasnian
Archaeoperisaccus xichongensis Givetian Givetian