Circulina

Genus Circulina

Species total:
20

Age range:
280 - 22.5 MA (obsolete dating)

IRMNG:
find

Name	From	To
Circulina sp	Late Tatarian	Stampian
Circulina	Tatarian	Early Cenozoic
Circulina meyeriana	Permian	Late Cretaceous