Genus Forma-b

Species total:
3
Age range:
111 - 96 MA (obsolete dating)
IRMNG:
find
Name From To Age range
Forma-b sp Aptian Early Albian
Forma-b sp. Masu.,1988 Early Cenomanian Middle Cenomanian
Forma-b sp.1 Maastrichtian Maastrichtian