aalenian
aeronhian
albian
anisian
aptian
aquitanian
archean
artinskian
asselian
bajocian
barremian
bartonian
bashkirian
basin groups
bathonian
berriasian
burdigalian
calabrian
callovian
calymmian
cambrian
cambrian series2
cambrian series3
cambrian stage2
cambrian stage3
cambrian stage4
cambrian stage5
campanian
capitanian
carboniferous
carnian
cenomanian
cenozoic
changhsingian
chattian
cisuralian
coniacian
cretaceous
cryogenian
cryptic
danian
dapingian
darriwilian
devonian
drumian
ectasian
ediacaran
eifelian
emsian
eoarchean
eocene
famennian
floian
fortunian
frasnian
furongian
furongian stage10
furongian stage9
gelasian
givetian
gorstian
guadalupian
guzhangian
gzhelian
hadean
hauterivian
hettangian
himantian
holocene
homerian
induan
ionian
jurassic
kasimovian
katian
kimmeridgian
kungurian
ladinian
langhian
llandovery
lochkovian
lopingian
lower cretaceous
lower devonian
lower imbrian
lower jurassic
lower mississippian
lower ordovician
lower pennsylvanian
lower triassic
ludfordian
ludlow
lutetian
maastrichtian
mesoarchean
mesoproterozoic
mesozoic
messinian
middle devonian
middle jurassic
middle mississippian
middle ordovician
middle pennsylvanian
middle triassic
miocene
mississippian
moscovian
nectarian
neoarchean
neogene
neoproterozoic
norian
olenekian
oligocene
ordovician
orosirian
oxfordian
paibian
paleoarchean
paleocene
paleogene
paleoproterozoic
paleozoic
pennsylvanian
permian
phanerozoic
piacenzian
pleistocene
pliensbachian
pliocene
pragian
precambrian
priabonian
pridoli
proterozoic
quaternary
rhaetian
rhuddanian
rhyacian
roadian
rupelian
sakmarian
sandbian
santonian
selandian
serpukhovian
serravallian
sheinwoodian
siderian
silurian
sinemurian
statherian
stenian
telychian
terreneuvian
thanetian
tithonian
toarcian
tonian
tortonian
tournaisian
tremadocian
triassic
turonian
upper cretaceous
upper devonian
upper jurassic
upper mississippian
upper ordovician
upper pennsylvanian
upper pleistocene
upper triassic
valanginian
visean
wenlock
wordian
wuchiapingian
ypresian
zanclean
0mya
0.126mya
0.781mya
1.806mya
1000mya
112.0mya
1200mya
125.0mya
13.82mya
130.0mya
133.9mya
140.2mya
1400mya
145.5mya
15.97mya
150.8mya
155.6mya
1600mya
161.2mya
164.7mya
167.7mya
171.6mya
175.6mya
1800mya
183.0mya
189.6mya
196.5mya
199.6mya
2.588mya
20.43mya
203.6mya
2050mya
216.5mya
228.7mya
23.03mya
2300mya
237.0mya
245.9mya
249.5mya
2500mya
251.0mya
253.8mya
260.4mya
265.8mya
268.0mya
270.6mya
275.6mya
28.4mya
2800mya
284.4mya
294.6mya
299.0mya
3.600mya
303.4mya
307.2mya
311.7mya
318.1mya
3200mya
328.3mya
33.9mya
345.3mya
359.2mya
3600mya
37.2mya
374.5mya
385.3mya
391.8mya
397.5mya
40.4mya
4000mya
407.0mya
411.2mya
416.0mya
418.7mya
421.3mya
422.9mya
426.2mya
428.2mya
436.0mya
439.0mya
443.7mya
445.6mya
455.8mya
460.9mya
4600mya
468.1mya
471.8mya
478.6mya
48.6mya
488.3mya
492mya
496mya
499mya
5.332mya
503mya
506.5mya
510mya
515mya
521mya
528mya
542mya
55.8mya
58.7mya
61.1mya
635mya
65.5mya
7.246mya
70.6mya
83.5mya
85.8mya
850mya
88.6mya
93.6mya
99.6mya