Cm(Tommotian
Cm(Atdabanian
Cm(Botomian
Cm(Tojonian
Cm(lower_Middle
Cm(middle_Middle
Cm(upper_Middle
Cm(Dresbachian
Cm(Franconian
Cm(Trempealeauan
O_(Tremadocian
O_(Arenigian
O_(Llanvirnian
O_(Llandeilian
O_(Caradocian
O_(Ashgillian
S_(Llandoverian
S_(Wenlockian
S_(Ludlovian
S_(Pridolian
D_(Gedinnian
D_(Siegenian
D_(Emsian
D_(Eifelian
D_(Givetian
D_(Frasnian
D_(Famennian
C_(Tournaisian
C_(Visean
C_(Serpukhovian
C_(Bashkirian
C_(Moscovian
C_(Stephanian
P_(Asselian
P_(Sakmarian
P_(Leonardian
P_(Guadelupian
P_(Tatarian
Tr(Induan
Tr(Olenekian
Tr(Anisian
Tr(Ladinian
Tr(Carnian
Tr(Norian
J_(Hettangian
J_(Sinemurian
J_(Pliensbachian
J_(Toarcian
J_(Aalenian
J_(Bajocian
J_(Bathonian
J_(Callovian
J_(Oxfordian
J_(Kimmeridgian
J_(Tithonian
K_(Berriasian
K_(Valanginian
K_(Hauterivian
K_(Barremian
K_(Aptian
K_(Albian
K_(Cenomanian
K_(Turonian
K_(Coniacian
K_(Santonian
K_(Campanian
K_(Maestrichtian
T_(lower_Paleocene
T_(upper_Paleocene
T_(lower_Eocene
T_(middle_Eocene
T_(upper_Eocene
T_(Oligocene
T_(lower_Miocene
T_(middle_Miocene
T_(upper_Miocene
T_(Pliocene
Q_(Pleistocene
Recent