0 100 200m
Age
Standard Chronostratigraphy
Period Epoch Stage Primary
Paleozoic Sequences -- Haq and Schutter (Science, 2008) Paleozoic Sequences --other studies
Mega-Sequences
of Sloss
Sequences(nomenclature by
J. Ogg)
Coastal Onlap and Mean Sea-Level (intermediate term)
Paleozoic Long- andShort-Term Sea Level Permian-Devonian
T-R Cycles
255
260
265
270
275
280
285
290
295
300
305
310
315
320
325
330
335
340
345
350
355
360
365
370
375
380
385
390
395
400
405
410
415
420
425
430
435
440
445
450
455
460
465
470
475
480
485
490
495
500
505
510
515
520
525
530
535
540
545
550 Ed
iaca
ran
Cam
bri
anO
rdo
vici
anS
iluri
anD
evo
nia
nC
arb
on
ifer
ou
sP
erm
ian
Terr
eneu
vian
Ser
ies
2S
erie
s 3
Fur
ongi
anE
arly
Mid
dle
Late
Llan
dove
ryW
enlo
ckLu
dlow
Prid
oli
Ear
lyM
iddl
eLa
teE
arly
Mis
s.M
iddl
e M
iss.
Late
Mis
s.E
arly
Pen
n.M
iddl
e P
enn.
Late
Pen
n.C
isur
alia
nG
uada
lupi
anLo
ping
ian
Fortunian
542.0
Stage 2
528.0
Stage 3
521.0
Stage 4
515.0
Stage 5
510.0
Drumian
506.5
Guzhangian
503.0
Paibian
499.0
Stage 9
496.0
Stage 10
492.0
Tremadocian
488.3
Floian
478.6
Dapingian
471.8
Darriwilian
468.1
Sandbian
460.9
Katian
455.8
Hirnantian445.6
Rhuddanian
443.7
Aeronian
439.0
Telychian
436.0
Sheinwoodian428.2
Homerian
426.2
Gorstian422.9
Ludfordian
421.3
418.7
Lochkovian
416.0
Pragian
411.2
Emsian
407.0
Eifelian
397.5
Givetian
391.8
Frasnian
385.3
Famennian
374.5
Tournaisian
359.2
Visean
345.3
Serpukhovian
328.3
Bashkirian
318.1
Moscovian
311.7
Kasimovian
307.2
Gzhelian
303.4
Asselian
299.0
Sakmarian
294.6
Artinskian
284.4
Kungurian
275.6
Roadian
270.6
Wordian
268.0
Capitanian
265.8
Wuchiapingian
260.4
Changhsingian
253.8
Ear
ly-C
ambr
ian
serie
s (K
irsch
vink
an
d R
ozan
ov, 1
984;
Kirs
chvi
nk, 1
978)
Mid
-Cam
bria
n se
ries
(Pav
lov-
Gal
let,
2005
)O
rd-C
amb
boun
dary
se
ries
(Pav
lov-
Gal
let,
2005
)M
ayer
o R
ever
sed
Sup
erch
ron
San
dbia
n-E
. Kat
ian
mix
ed
inte
rval
(P
avlo
v-G
alle
t, 20
05)
Hirn
antia
n-
Lt. K
atia
n N
Llan
dove
ry m
ixed
- po
larit
y in
terv
alW
enlo
ck N
orm
al-
pola
rity
inte
rval
Ludl
ow-P
ridol
i m
ixed
-pol
arity
inte
rval
Say
an (
Rn)
hy
perc
hron
Poo
rly
know
nC
arbo
nife
rous
M
ixed
Kia
man
Rev
erse
d-
pola
rity
Hyp
erch
ron
Illaw
ara
Ser
ies
Sau
kT
ippe
cano
eK
aska
skia
Abs
arok
a
Low
erM
iddl
eU
pper
Low
erU
pper
Low
erU
pper
Low
er
Upper
0 100 200m 0 100 200m
Medium- Resolution Perm- Devon Sequences
LateCambrianLowstand
Early-Middle
TremadocianHighstand
LateTremadoc-E. ArenigLowstand
Mid Arenig Highstand
Late Arenig - Early Llanvirn
Lowstand
LateLlanvirn- Caradoc
Highstand
AshgillLowstandInterval
Silur-1
Silur-2
Silur-3
Silur-4
Silur-5
Silur-5a
Silur-6
Silur-7
Silur-8
Rhuddanian (Saelabonn) Transgressive Event
Hirnantian LowstandEvent
Langoyene DrowningEvent
Terminal HusbergoyaLowstand Event
Husbergoya DrowningEvent
Spannslokket DrowningEvent
Grimsoya RegressiveEvent
Linearis Drowning-3Event
Linearis Drowning-2Event
Linearis Drowning-1Event
Solvang LowstandEvent
Nakkholmen DrowningEvent
Frognarkilen LowstandEvent
Keila Drowning Event
Arnestad Drowning
Vollen Lowstand
Furudal Highstand
Skarlov Lowstand
Helskjer DrowningEvent
Stein Lowstand Event
Basal Llanvirn DrowningEvent
Komstad RegressiveEvent
Gardlosa DrowningEvent
Basal WhiterockLowstand
Evae DrowningEvent
Billingen TransgressiveEvent
CopiosusDrowning Event
Hagastrand DrowningEvent
Ceratopyge RegressiveEvent
Kiaerograptus DrowningEvent
Peltocare RegressionEvent
Black MountainRegression Event
StonehengeTransgression
Acerocare RegressiveEvent
end-Perm
Chang-1?
Tansill/Wuch-2
Tansill/Wuch-1
Yates
Seven Rivers
Queens
Graysburg
Upper San Andres I
Brushy Canyon
Road Canyon IIRoad Canyon I
Iren -2
Iren
Filippov
Saran
Sargin
Irgin 3
Irgin 2
Barneston 2
Barneston 1
Kinney
Wreford 2
Wreford 1
Funston
Crouse
Middleburg
Eiss
Beattie 2
Beattie 1
Red Eagle 2
Foraker 2
F (Tarkio)Howard
Topeka
Deer Creek
Lecompton
Oread
E (Cass)
Stanton
D (Iola)
Dewey
C (Dennis)
Swope
B (Hertha)
Lost Branch
Altamont
Pawnee
Fort Scott 2
A (Verdigris)
Tiawah/Inola
Don./McCurtain
Finnie
Grindstaff
Pounds
Bostwich
Trace Creek
Dye - Kessler
Prairie Grove 2
Cane Hill
Imo
Degonia
Clore
Menard
Tar Springs
Hardinsburg
Fraileys
Cypress
Bethel
Yankeetown
Aux Vases
Ridenhower -Ste. Genevieve
St Louis
Salem (upper)
Salem (lower)
Warsaw
Keokuk (Upper)
Keokuk (Lower)
Meppen
Chouteau
Hannibal
Glen Park
II f
II e
II d
II c
II b
II a
I c
I b
I a
252.23
253.02
253.8
255.12
256.44
258.47
260.5
261.85
263.3
265.9266.1
266.58
267.05
268.0268.2268.35
268.78
269.17
269.56
270.26270.49
270.8
271.15
272.71
273.1273.35
273.6
275.1
275.6
277.05
278.5
279.63
280.0
280.37
280.75
281.89
283.14
284.4284.6
285.33
286.06
286.79
287.51
288.24
288.97
289.7
290.43
291.16
291.89
292.61
293.34
294.6294.8
295.38
295.97
296.57
297.17
297.76
298.34298.68299.03
299.73299.99
301.46
315.57315.82
316.39316.64
317.39317.44
317.92
318.93
319.77
320.49
322.07322.27
322.86322.95
323.7323.81
324.6324.71
325.5325.61
326.4326.58
327.82327.99
329.24329.41
330.65330.83
331.77332.08
333.02333.25
333.95
334.9
335.84336.17
337.9
340.61
341.52
341.99
343.41
343.94
345.53
346.88
350.86
351.32
352.43
354.31
357.12
358.99
372.28
361.5
363.03
363.79
364.94
365.78366.09
367.31
369.15369.3
371.44
372.01
373.58
374.04374.27
376.12
396.65
397.5
398.93
400.35
402.54402.73
404.17404.34
407.74
408.32
409.21
409.94
410.78411.2
299.84
Up. Grenola (Neva)
301.86
302.26
302.67
303.08
303.48
303.89
304.29
304.7
305.1
305.51
305.91
306.32306.72
307.13
307.53
307.94
308.34
308.75
309.15
310.21310.56310.95
311.7
312.45
313.19
313.94314.35
I fI e
I d
379.56379.86
377.2377.42
380.27
380.89
381.74
385.3385.59
386.28
387.25
387.84388.23
389.49
390.37
390.64
391.12391.31
385.89
390.46
392.6392.94
393.37
394.76394.94395.19
end-Perm
Tansill/Wuch
Brushy Canyon
Filippov
Irgin
Burslev (Barneston)
Funston
Lenox Hills (Eiss)
Neal Ranch (Upper Grenola)Red Eagle 3
Red Eagle
Foraker 2
F of Heckel'08
OreadE of Heckel'08
Stanton
D of Heckel'08(Dennis)
C of Heckel'08
Swope
B of Heckel'08
Lower Fort ScottA of Heckel'08
McCurtainMcCurtain
Prairie Grove 2
Imo
Degonia
Tar Springs
Salem (upper)
Keokuk (Upper)
Chouteau
Glen Park
II f
II e
II a
I c
I b
I a
0 a
Ordovician Sealevel Events (Baltoscandia)
Ammonoid Zonation Conodont Zonation
Graptolite Zones
Fusulinids and BenthicForaminifer Zonation
Only straight ammonoids known
Anetoceras
Anarcestes
Pinacites
Maenioceras
Pharciceras
Manticoceras
Cheiloceras
Prolobites
Platyclymenia
Clymenia
Wocklumeria
Protocanites - Gattendorfia
Protocanites - Pericyclus
Merocanites - Ammonellipsites
Beyrichoceras - Goniatites
Hypergoniatites - Ferganoceras
Uralopronorites - Cravenoceras
Fayettevillea - Delepinoceras
( hiatus in Eurasia ? )
Homoceras - Hudsonoceras
Reticuloceras - Bashkortoceras
Bilinguites - Cancelloceras
Branneroceras - Gastrioceras
Diaboloceras - Axinolobus
Diaboloceras - Winslovoceras
Paralegoceras - Eowellerites
Pseudoparalegoceras - Wellerites
Shumardites - Vidrioceras
Shumardites
Svetlanoceras
Sakmarites
Aktubinskia, Artinskia, Neopronorites
Waagenoceras
Timorites
Roadoceras, Doulingoceras
Araxoceras
Iranites
Rexroadus nathani
Distomodus kentuckyensis
Pterospathodus tenuis
Distomodus staurognathoides
Pterospathodus eopennatus
Pterospathodus celloni
Pterospathodus amorphognathoides
Kockelella ranuliformis
Ozarkodina sagitta rhenana
Ozarkodina sagitta sagitta
Ozarkodina bohemica
Kockelella stauros
[ not zoned ]
Ancoradella ploeckensis
Polygnathoides siluricus
Ozarkodina snajdri Interval Zone
Ozarkodina crispa
Ozarkodina remscheidensis Interval Zone
Oulodus elegans detortus
Icriodus woschmidti - postwoschmidti
Ozarkodina eurekaensis
Ozarkodina delta
Pedavis pesavis
Eognathodus sulcatus sulcatus
Eognathodus sulcatus kindlei
Polygnathus pireneae
Polygnathus kitabicus
Polygnathus gronbergi / excavatus
Polygnathus nothoperbonus
Polygnathus inversus
Polygnathus serotinus
Polygnathus costatus patulus
Polygnathus costatus partitus
Polygnathus costatus costatus
Tortodus kock. australis
Tortodus kock. kockelianus
Polygnathus xylus - ensensis
Polygnathus hemiansatus
Polygnathus varcus
Schmidtognathus hermanni
Klapperina disparilis
Skeletognathus norrisi
Mesotaxis falsiovalis
Palmatolepis transitans
Palmatolepis punctata
Palmatolepis hassi
Palmatolepis jamieae
Palmatolepis rhenana
Palmatolepis linguiformis
Palmatolepis triangularis
Palmatolepis crepida
Palmatolepis rhomboidea
Palmatolepis marginifera
Palmatolepis rugosa trachytera
Palmatolepis perlobata postera
Palmatolepis gracilis expansa
Siphonodella praesulcata
Siphonodella sulcata
Siphonodella duplicata
Siphonodella belkai
Siphonodella quadruplicata
Siphonodella isosticha
Gnathodus typicus
Dollimae bouckaerti
Scalliognathus anchoralis
Gnathodus texanus
Gnathodus bilineatus bilineatus
Lochria nodosa
Lochria cruciformis
Gnathodus bilineatus bollandensis
( hiatus in Eurasia ? )
Declinagnathodus noduliferus
Idiognathoides sinuatus
Neognathodus askynensis
Idiognathodus sinuosus
Declinognathodus marginodosus
Declinognathodus donetzianus - Idiognathoides postsulcatus
Streptognathodus transitivus
Neognathodus medexultimus - Neognathodus bothrops
Streptognathodus concinnus - Idiognathodus robustus
Neognathodus medexultimus - Idiognathodus podolskensis
Neognathodus inaequalisNeognathodus roundyi
Streptognathodus subexcelsus"Swadelina" makhlinaeIdiognathodus sagittalis
Streptognathodus cancellosus
Idiognathodus toretzianus
Streptognathodus firmusStreptognathodus simulator
Streptognathodus vitali
Streptognathodus virgilicus
Streptognathodus bellus
Streptognathodus wabaunsensis
Streptognathodus isolatus
Streptognathodus constrictus
Streptognathodus fusus
Streptognathodus postfusus
Streptognathodus barskovi
Sweetognathus merrilli - Neogondolella uralensis
Sweetognathus binodosus
Sweetognathus whitei
Neostreptognathodus pequopensis
Neostreptognathodus pnevi
Neostreptognathodus prayi
Neostreptognathodus sulcoplicatus
Jinogondolella nankingensis
Jinogondolella aserrata
Jinogondolella postserrata
Jinogondolella altudaensis
Clarkina postbitteri hongshuiensis Clarkina postbitteri postbitteri
Clarkina dukouensis
Clarkina asymetrica
Clarkina leveni
Clarkina guangyuanensisClarkina transcaucasica
Clarkina orientalis
Clarkina wangi
Clarkina subcarinataClarkina changxingensis
Clarkina yiniClarkina meishanensis
Cordylodus angulatus
Paltodus deltifer
Paroistodus proteus
Prioniodus elegans
Oepikodus evae
Baltoniodus triangulatus
Baltoniodus navis
Paroistodus originalis
Baltoniodus norrlandicus
Eoplacognathus variabilis
Eoplacognathus suecicus
Pygodus serra
Pygodus anserinus
Amorphognathus tvaerensis
Amorphognathus superbus
Amorphognathus ordovicicus
-
Anisograptus
Psigraptus jacksoni
Aorograptus victoriae
Araneograptus pulchellus
Tetragraptus approximatus
(Pendeograptus fruticosus)
Didymograptus protobifidus
Isograptus primulus
Isograptus victoriae lunatus
Isograptus victoriae victoriae
Isograptus victoriae maximus
Oncograptus upsilonCardiograptus morsus
Undulograptus austrodentatus
Undulograptus intersitus
Pseudoclimacograptus decoratus
Archiclimacograptus riddellensis
Nemagraptus gracilis
Orthograptus calcaratus
Diplacanthograptus lanceolatus
Diplacanthograptus spiniferus
Dicranograptus kirki
Dicellograptus gravis
Climacograptus? uncinatus
pre-pacificus
Paraorthograptus pacificus
Normalograptus? extraordinarius
Normalograptus? persculptus
Anabarites trisulcatus
Purella antiqua
SMALL SHELLY FOSSIL ZONES:
[ Blank zone ]
Nochoroicyathus sunnaginicus
Dokidocyathus regularis
Dok. lenaicus-Tum. primigenius
ARCHAEOCYATHAN ZONES:
Profallotaspis jakutensis
Fallotaspis
Pagetiellus anabarus
Judomia
B. micmacciformis -Erbiella
Bergeroniellus gurarii
Bergeroniellus asiaticus
Bergeroniellus ornata
Bergeroniellus ketemensis
Lermontovia grandis
Anabaraspis splendens
Ovatoryctocara granulata - Schistocephalus antiquus
Kounamkites
Ptychagnostus gibbus
Tomagnostus fissus
Anopolenus henrici - Corynexochus perforatus
Anomocarioides limbataeformis
Lejopyge laevigata - Oidalagnostus trispinifer
Acrocephalella granulosa - Koldiniella prolixa
Pedinocephalina - Toxotis
Glyptagnostus stolidotus
Glyptagnostus reticulatus
[ Blank zone ]
Erixanium sentum
Agnostotes orientalis - Irvingella perfecta
Norilagn. quadratus - Irvingella cipita
Irvinella norilica
Tukalandaspis egens
Ketyna ketiensis - Monosulcatina laeve
Dolgeuloma abunda - D. dolganensis
Eopatokephalus nyaicus
Anabarites trisulcatus - Protohertzium anabarica
Siphogonuchites triangularis - Paragloborilus subglobosus
[ Blank zone ]
Heraultipegma yunnanensis
[ Blank zone ]
Sinosachites flabelliformis - Tannuolina zhangwentangi
SMALL SHELLY FOSSIL ZONES:
Hupeidiscus - Sinodiscus
Sichuanolenus - Chengkouia
Arthricocephalus
Arthricocephalites - Changaspis
Protoryctocephalus
Ovatoryctocara granulata - Bathynotus holopygus
Oryctocephalus indicus
Oryctocephalus orientalis
Ptychagnostus gibbus
Ptychagnostus atavus
Ptychagnostus punctuosus
Goniagnostus nathorstiLejopyge armata
Lejopyge laevigata
Proagnostus bulbus
Linguagnostis reconditus
Glyptagnostus stolidotus
Glyptagnostus reticulatus
Innitagnostus inexpectans - Proceratopyge protracta
Corynexochus plumula - Sinoproceratopyge cf. kiangshanensis
Agnostotes orientalis - Irvingella angustilimbata
Rhaptagnostus ciliensis - Onchonotellus cf. kuruktagensis
Eolotagnostus decoratus - Kaolishaniella
Probinacunaspis nasalis - Peichiashania hunanensis
Lotagnostus americanus - Hedinaspis regalis
Archaeuloma taoyuanense - Leioagnostus cf. bexelli
Mictosaukia striata -Fatocephalus
Leiostegium constrictum - Shenjiawania brevica
Hysterolenus - Onychopyge
Ordovician: North Atlantic Conodont Zones
Akidograptus ascensus
Parakidograptus acuminatus
Orthograptus vesiculosis
Coronograptus cyphus
Demirastrites triangulatus- pectinatus
Monograptus argenteus - leptotheca
Lituigraptus convolutus
Stimulograptus sedgwickii
Spirograptus guerichi
Spirograptus turriculatus
Monograptus crispus
Monograptus griestoniensis - crenulata
Oktavites spiralis Interval Zone
Cyrtograptus lapworthi - insectus
Cyrtograptus centrifugus - murchisoni
Monograptus riccartonensis - belophorus - antennularis
Cyrtograptus rigidus - perneri
Cyrtograptus lundgreni
Pristiograptus parvus - Gothograptus nassa
Colonograptus praedeubeli - deubeli
Colonograptus ludensisNeodiversograptus nilssoni
Lobograptus scanicus
Saetograptus leintwardinensis
Neocucullograptus kozlowskii - Polonograptus podoliensis
Monograptus formosus
Monograptus parultimus - ultimus
Monograptus branikensis - lochkovensis
Monograptus bouceki - transgrediens - perneri
Monograptus praehercynicus, M. uniformis
Monograptus hercinicus
Monograptus falcarius
Monograptus yukonensis
Sphaeroschwagerina vulgarisSphaeroschwagerina fusiformis
Schwagerina nux
Pseudoschwagerina robusta
Sphaeroschwagerina gigas
Schwagerina moelleri
Schwagerina vernueili
Zigarella urdalensis - Z. plicatissima
Pseudofusulina
Parafusulina
Chalaroschwagerina vulgaris
Brevaxina
Praeskinnerella pavlovi
Skinerella
Cancellina
Neoschwangerina tenuis
Afganella tereshkovae
Afganella schenki
Rauserella
Codonofusiella
Paradunbarulla
Palaeofusulina minima
Palaeofusulina sinensis - Parananlingellia
Tournayellina pseudobeata - Septatournayella njumylga
Bisphaera malevkensis - Earlandia minima
Chernyshinella disputabilis
Palaeospiroplectammina tchernyshinensis
Spinoendothyra costifera
Endothyra elegia - Eotextularia diversa
Eoparastaffella simplex - Eoendothyranopsis donica
Uralodiscus rotundus
Endothyranopsis compressa - Pararchaediscus kokjubensis
Endothyranopsis crassus - Archaediscus gigas
Neoarchaediscus postrugosus
Eostaffellina protvae
Monotaxinoides transitorius
( regional hiatus ? )
Plectostaffella bogdanovkensis
Semistaffella variabilis - Semistaffella minuscilaria
Pseudostaffella antiqua
Staffellaeformes staffellaeformis - Pseudostaffella praegorskyi
Profusulinella primitiva - Pseudostaffella gorskyi
Profusulinella rhombiformis
Verella spicata - Alj. tikhonovichi
Aljutovella aljutovica
Priscoidella priscoidea
Fusulinella subpulchra
Fusulinella colaniae - F. voshgalensis - Beedeina kamensis
Fusulinella bocki
Fusulina cylindrica - Protriticites ovatus
Protriticites pseudomontiparus - Obsoletes obsoletus
Montiparus montiparus
Rauserites quasiarcticus
Rauserites rossicus - Rauserites stuckenbergi
Jigulites jigulensis
Daixina sokensis
Daixina bosbytauensis - Globifusulina robusta
Trilobite Zones andmajor Cambrian events
Trilobite Zones and Cambrian eventsSouth ChinaSiberia
Watsonella
SMALL SHELLY FOSSIL ZONES:
Abadiella huoi
Pararaia tateiPararaia bunyerooensis
Pararaia janeae
[ Gap ]
Redlichia forresti
Xystridura negrina
Pentagnostus anabarensis
Pentagnostus praecurrensPentagnostus shergoldiPtychagnostus gibbus
Ptychagnostus atavus
Euragnostus opimus
Ptychagnostus punctuosusDoryagnostus deltoides
Goniagnostus nathorsti
Lejopyge laevigata
Dam. torosa - Fer. janitrix
Erediaspis eretes
Achmarhachis quasivespa
Glyptagnostus stolidotus
Glyptagnostus reticulatus
Proceratopyge cryptica
Erixanium sentum
Stigmatoa diloma
Irvingella tropicaWentsuia iota - Rhaptagn. apsisPeich. secunda - Pro. glabellaPeichiashania tertia - P. quarta
Rh.c. patulus - C. squamosa - H. lilyensis
Rh. clarki prolatus - Caz. secatrixRh. bifax - N. denticulatus
Rhaptagn. clarki maximus - Rh. papilio Sinosaukia impages
Neoagn. quasibilobus - Shergoldia nomas
Mictosaukia perplexaCordylodus proavus (Australia)Hirsutodontus simplex (Australia)
C. prolindstromi (Australia)
Chang-3
Chang-2
Chang-1
Wuch-2
Wuch-1
Cap-3
Cap-2
Cap-1
Word-3
Word-2
Word-1
Road-2
Road-1Kung-3dKung-3cKung-3bKung-3a
Kung-2
Kung-1
Art-3
Art-2
Art-1
Sak-7
Sak-6
Sak-5
Sak-4
Sak-3
Sak-2
Sak-1
Ass-3
Ass-2
Ass-1
Gzh-3
Gzh-2
Gzh-1
Kas-3
Kas-2
Kas-1
Mosc-3
Mosc-2
Mosc-1
Bash-7
Bash-6
Bash-5
Bash-4Bash-3
Bash-2
Bash-1
Serp-9
Serp-8
Serp-7
Serp-6
Serp-5
Serp-4
Serp-3
Serp-2
Serp-1
Vis-7
Vis-6
Vis-5
Vis-4
Vis-3
Vis-2
Vis-1
Tour-5
Tour-4
Tour-3
Tour-2
Tour-1
Fam-8
Fam-7
Fam-6
Fam-5
Fam-4
Fam-3
Fam-2
Fam-1
Fras-8
Fras-7
Fras-6
Fras-5
Fras-4
Fras-3
Fras-2
Fras-1
Giv-5
Giv-4
Giv-3
Giv-6
Giv-2
Giv-1
Eif-3
Eif-2
Eif-1
Ems-8Ems-7
Ems-6
Ems-5
Ems-4
Ems-3
Ems-2
Ems-1
Prag-1
Loch-4
Loch-3
Loch-2
Loch-1
Pri-1
Lud-3
Lud-2
Lud-1
Gor-1
Hom-2
Hom-1
Shein-1
Tely-4
Tely-3
Tely-2
Tely-1
Aer-2
Aer-1
Rhud-1
Hirn-1
Kat-7
Kat-6
Kat-5
Kat-4
Kat-3
Kat-2
Kat-1
Sand-3
Sand-2
Sand-1
Darr-4
Darr-3
Darr-2
Darr-1
Dap-2
Dap-1
Flo-5
Flo-4
Flo-3
Flo-2
Flo-1
Trem-3
Trem-2
Trem-1
Camb10-4
Camb10-3
Camb10-2
Camb10-1
Camb9-1
Paib-1
Guzh-2
Guzh-1
Drum-2
Drum-1
Camb5-3
Camb5-2
Camb5-1
Camb4-2
Camb4-1
Camb3-5
Camb3-4
Camb3-3
Camb3-2
Camb3-1
Camb2-2
Camb2-1
Fort-6
Fort-5
Fort-4
Fort-3
Fort-2
Fort-1
Vend-4
Vend-3
Vend-2
Vend-1
251.5251.8
252.5252.89
253.8
254.57
256.0
257.32
260.4
261.04
262.0
262.5
263.0
264.12
265.8266.15
266.5266.7
267.0267.25267.5
267.77
268.4
269.28
270.6270.7
270.95271.3
271.65
272.0
272.6
273.5
274.34
275.6
276.68
278.0
279.75
281.5
282.81
284.4
285.35
286.5
287.18
288.0
288.64
289.6
290.23
291.0291.3
292.0292.36
293.2
293.69
294.6295.02
295.8295.98
296.7
297.5
299.0
299.68
300.5
301.02
301.8
302.65
303.5
303.98
304.7304.9
305.5
305.98
306.7
307.26
308.3308.51
309.0
309.92
311.3311.6
312.3312.65
313.3313.6
314.3
314.95
315.6316.0316.18
316.7316.9
317.5
318.01
319.2319.59
320.5320.86
321.7322.09
323.0323.35
324.0324.3
325.0
325.56
326.6326.8
327.4
328.3
329.4329.6
330.2330.62
331.6332.02
332.8
334.08
336.0
337.44
339.2
340.53
343.0
343.6
344.5344.92
345.7
346.54
348.5
349.5
351.0
351.69
353.3
355.37
359.2
359.92
361.0
361.96
363.4
364.2
365.7365.91
366.4366.84
367.5
368.5
370.0
370.8
386.02
376.72
379.0
382.0
372.0
372.88
374.5374.78
375.2375.56
376.0
377.6
378.09
379.72
380.8
381.4
383.0
384.0
384.68
385.5385.9386.2
386.79
387.5
388.0388.4
389.04
390.0
390.5
391.0391.21
391.6391.88
392.3392.45392.8
393.0393.3
393.98
395.0395.16395.4
396.56
397.5
398.3
399.5
400.35
401.2
402.6
404.0
404.9
406.0
406.45
407.0
408.35
410.0
410.82
411.5
412.5
413.5
414.0
414.5414.85
415.5
416.1
417.5
418.02
419.0
419.75
420.5420.7
421.0
422.0
423.0
424.0
425.0
425.55
426.0
426.68
427.5
428.18
429.0
429.75
430.5
431.75
433.0
434.0
435.0
435.9
436.8
437.79
439.0
441.12
443.7
444.6
445.7445.88
446.3446.7
447.3447.65
448.0448.4
449.0449.35
450.0
451.0
452.0
453.75
455.5455.75
456.2
457.2
458.2
459.69
460.9
461.35
461.8462.2
462.8
463.28
464.0
465.5
467.0
468.6
471.0
471.48471.8
472.34
473.0
474.0
475.0
475.5
476.0
476.45
477.0
478.2
481.0
482.26
483.8
485.15
486.8
487.55
488.3488.65
489.0489.4489.8
490.5
491.2491.56
492.0
493.2
495.0
497.0
499.0
500.0
501.0501.35
502.0
502.9
504.0
505.0
506.0
506.5
507.0507.18
507.5
508.1
509.0
510.13
511.5
512.75
514.0
514.67
515.5
516.25
517.0517.32
517.8518.2
518.8
519.9
521.0
522.5
524.0
525.4
528.0
530.0
533.0
533.9
535.0
535.45
536.0
536.8
538.0
539.0
540.0
540.7
542.0
542.8
544.0
544.83
545.5
546.63
548.0
548.5
549.0
Giv-7
R T
Paleozoic Time Scale and Sea-Level History
Silurian-Ordovician Sea Level
Geo-magneticPolarity
ICS
Sponsored, in part, by:
Updated by James G. Ogg (Purdue University) and Gabi Ogg to: GEOLOGIC TIME SCALE 2004(Gradstein, F.M., Ogg, J.G., Smith, A.G., et al.2004)
and The Concise Geologic Time Scale (Ogg, J.G., Ogg, G. & Gradstein, F.M., 2008)PrecambrianPaleozoicMesozoicCen
TimeScaLe
CreatorR
