Genus TSB group 4

Species total:
3
Age range:
54.5 - 40.25 MA (obsolete dating)
IRMNG:
find
Name From To Age range
TSB group 4 form 1 Early Eocene Middle Eocene
TSB group 4 form 2 Early Eocene Middle Eocene
TSB group 4 form 3 Early Eocene Middle Eocene