Genus Quadraeculina

Species total:
24
Age range:
280 - 1.2 MA (obsolete dating)
IRMNG:
find
Name From To Age range
Quadraeculina canadensis Mesozoic Early Cretaceous
Quadraeculina callaeformis Late Triassic Liassic
Quadraeculina bitorosa Late Triassic Early Jurassic
Quadraeculina apertus Middle Callovian Middle Callovian
Quadraeculina annulata Rhaetian Liassic
Quadraeculina anellaeformis Permian Early Pleistocene
Quadraeculina Late Triassic Early Albian