paleozoic time scale and sea-level history...

1
Age Standard Chronostratigraphy Period Epoch Stage Primary Paleozoic Sequences -- Haq and Schutter (Science, 2008) Mega- Sequences of Sloss Sequences (nomenclature by J. Ogg) Coastal Onlap and Mean Sea- Level (intermediate term) Paleozoic Long- and Short-Term Sea Level 0 100 200m 0 100 200m Conodont Zonation Graptolite Zonation Paleozoic Time Scale and Sea-Level History Geo- magnetic Polarity 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) Precambrian Paleozoic Mesozoic Cen Time ScaLe Creator R 0 100 200m 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 Ediacaran Cambrian Ordovician Silurian Terreneuvian Series 2 Series 3 Furongian Early Middle Late Llandovery Wenlock Ludlow Pridoli 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 Hirnantian 445.6 Rhuddanian 443.7 Aeronian 439.0 Telychian 436.0 Sheinwoodian 428.2 Homerian 426.2 Gorstian 422.9 Ludfordian 421.3 418.7 Early-Cambrian series (Kirschvink and Rozanov, 1984; Kirschvink, 1978) Mid-Cambrian series (Pavlov-Gallet, 2005) Ord-Camb boundary series (Pavlov-Gallet, 2005) Mayero Reversed Superchron Sandbian-E. Katian mixed interval (Pavlov-Gallet, 2005) Hirnantian- Lt. Katian N Llandovery mixed- polarity interval Wenlock Normal- polarity interval Ludlow-Pridoli mixed-polarity interval Sauk Tippecanoe Lower Middle Upper Lower Upper Late Cambrian Lowstand Early- Middle Tremadocian Highstand Late Tremadoc- E. Arenig Lowstand Mid Arenig Highstand Late Arenig - Early Llanvirn Lowstand Late Llanvirn- Caradoc Highstand Ashgill Lowstand Interval Silur-1 Silur-2 Silur-3 Silur-4 Silur-5 Silur-5a Silur-6 Silur-7 Silur-8 Rhuddanian (Saelabonn) Transgressive Event Hirnantian Lowstand Event Langoyene Drowning Event Terminal Husbergoya Lowstand Event Husbergoya Drowning Event Spannslokket Drowning Event Grimsoya Regressive Event Linearis Drowning-3 Event Linearis Drowning-2 Event Linearis Drowning-1 Event Solvang Lowstand Event Nakkholmen Drowning Event Frognarkilen Lowstand Event Keila Drowning Event Arnestad Drowning Vollen Lowstand Furudal Highstand Skarlov Lowstand Helskjer Drowning Event Stein Lowstand Event Basal Llanvirn Drowning Event Komstad Regressive Event Gardlosa Drowning Event Basal Whiterock Lowstand Evae Drowning Event Billingen Transgressive Event Copiosus Drowning Event Hagastrand Drowning Event Ceratopyge Regressive Event Kiaerograptus Drowning Event Peltocare Regression Event Black Mountain Regression Event Stonehenge Transgression Acerocare Regressive Event Ordovician Sealevel Events (Baltoscandia) 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 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 upsilon Cardiograptus 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 nathorsti Lejopyge 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 ludensis Neodiversograptus nilssoni Lobograptus scanicus Saetograptus leintwardinensis Neocucullograptus kozlowskii - Polonograptus podoliensis Monograptus formosus Monograptus parultimus - ultimus Monograptus branikensis - lochkovensis Monograptus bouceki - transgrediens - perneri Trilobite Zones and major Cambrian events Trilobite Zones and Cambrian events South China Siberia Watsonella SMALL SHELLY FOSSIL ZONES: Abadiella huoi Pararaia tatei Pararaia bunyerooensis Pararaia janeae [ Gap ] Redlichia forresti Xystridura negrina Pentagnostus anabarensis Pentagnostus praecurrens Pentagnostus shergoldi Ptychagnostus gibbus Ptychagnostus atavus Euragnostus opimus Ptychagnostus punctuosus Doryagnostus deltoides Goniagnostus nathorsti Lejopyge laevigata Dam. torosa - Fer. janitrix Erediaspis eretes Achmarhachis quasivespa Glyptagnostus stolidotus Glyptagnostus reticulatus Proceratopyge cryptica Erixanium sentum Stigmatoa diloma Irvingella tropica Wentsuia iota - Rhaptagn. apsis Peich. secunda - Pro. glabella Peichiashania tertia - P. quarta Rh.c. patulus - C. squamosa - H. lilyensis Rh. clarki prolatus - Caz. secatrix Rh. bifax - N. denticulatus Rhaptagn. clarki maximus - Rh. papilio Sinosaukia impages Neoagn. quasibilobus - Shergoldia nomas Mictosaukia perplexa Cordylodus proavus (Australia) Hirsutodontus simplex (Australia) C. prolindstromi (Australia) 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-1 435.0 435.9 436.8 437.79 439.0 441.12 443.7 444.6 445.7 445.88 446.3 446.7 447.3 447.65 448.0 448.4 449.0 449.35 450.0 451.0 452.0 453.75 455.5 455.75 456.2 457.2 458.2 459.69 460.9 461.35 461.8 462.2 462.8 463.28 464.0 465.5 467.0 468.6 471.0 471.48 471.8 472.34 473.0 474.0 475.0 475.5 476.0 476.45 477.0 478.2 481.0 482.26 483.8 485.15 486.8 487.55 488.3 488.65 489.0 489.4 489.8 490.5 491.2 491.56 492.0 493.2 495.0 497.0 499.0 500.0 501.0 501.35 502.0 502.9 504.0 505.0 506.0 506.5 507.0 507.18 507.5 508.1 509.0 510.13 511.5 512.75 514.0 514.67 515.5 516.25 517.0 517.32 517.8 518.2 518.8 519.9 521.0 522.5 524.0 525.4 528.0 530.0 533.0 533.9 535.0 535.45 536.0 536.8 538.0 539.0 540.0 540.7 542.0 542.8 544.0 544.83 545.5 546.63 548.0 548.5 549.0 Silurian-Ordovician Sea Level 434.0 416.1 417.5 418.02 419.0 419.75 420.5 420.7 421.0 422.0 423.0 424.0 425.0 425.55 426.0 426.68 427.5 429.0 429.75 430.5 431.75 433.0 428.18

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Page 1: Paleozoic Time Scale and Sea-Level History …nhm2.uio.no/norges/timescale/9b_Lower_Paleozoic_Sept08.pdfLate Llandovery Wenlock Ludlow Pridoli Fortunian 542.0 Stage 2 528.0 Stage 3

Age

Standard Chronostratigraphy

Period Epoch Stage Primary

Paleozoic Sequences -- Haq and Schutter (Science, 2008)

Mega-Sequences

of Sloss

Sequences(nomenclature by

J. Ogg)

Coastal Onlap and Mean Sea-Level (intermediate term)

Paleozoic Long- andShort-Term Sea Level

0 100 200m 0 100 200mConodont Zonation Graptolite Zonation

Paleozoic Time Scale and Sea-Level History

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

0 100 200m

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 Edia

cara

nC

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ian

Ord

ovic

ian

Silu

rian

Terr

eneu

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Furo

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nE

arly

Mid

dle

Late

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dlow

Prid

oli

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

Ear

ly-C

ambr

ian

serie

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Low

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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 Stonehenge

Transgression

Acerocare RegressiveEvent

Ordovician Sealevel Events (Baltoscandia)

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

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 maximusOncograptus upsilon

Cardiograptus 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 jakutensisFallotaspis

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 stolidotusGlyptagnostus 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 stolidotusGlyptagnostus 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 convolutusStimulograptus 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

Trilobite Zones andmajor Cambrian events

Trilobite Zones and Cambrian events

South China

Siberia

Watsonella

SMALL SHELLY FOSSIL ZONES:

Abadiella huoi

Pararaia tateiPararaia bunyerooensis

Pararaia janeae

[ Gap ]

Redlichia forresti

Xystridura negrina

Pentagnostus anabarensis

Pentagnostus praecurrensPentagnostus shergoldiPtychagnostus gibbusPtychagnostus atavus

Euragnostus opimus

Ptychagnostus punctuosusDoryagnostus deltoides

Goniagnostus nathorsti

Lejopyge laevigata

Dam. torosa - Fer. janitrix

Erediaspis eretes

Achmarhachis quasivespa

Glyptagnostus stolidotusGlyptagnostus 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. secatrix

Rh. bifax - N. denticulatusRhaptagn. clarki maximus - Rh. papilio

Sinosaukia impages

Neoagn. quasibilobus - Shergoldia nomas

Mictosaukia perplexaCordylodus proavus (Australia)Hirsutodontus simplex (Australia)

C. prolindstromi (Australia)

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

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

460.9461.35

461.8462.2

462.8463.28

464.0

465.5

467.0

468.6

471.0471.48

471.8

472.34

473.0

474.0

475.0475.5476.0

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

506.0506.5507.0

507.18507.5

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

535.0535.45

536.0

536.8

538.0

539.0

540.0

540.7

542.0

542.8

544.0

544.83

545.5

546.63

548.0548.5549.0

Silurian-Ordovician Sea Level

434.0

416.1

417.5418.02

419.0

419.75

420.5420.7

421.0

422.0

423.0

424.0

425.0

425.55426.0

426.68

427.5

429.0

429.75

430.5

431.75

433.0

428.18