Page 1

100

95

110

105

115

120

175

180

185

190

195

200

145

150

155

160

165

170

125

130

135

140

Ma

upper

173

180

184

190

202

BAJOCIAN

AALENIAN

TOARCIAN

SINEMURIAN

HETTANGIAN

7cii

7d

PLIENSBACHIAN

195

9Bi9Bii

146

151

159

TITHONIAN

KIMMERIDGIAN

OXFORDIAN

CALLOVIAN

BATHONIAN

165

6a

6b

6c

7ai

6ciia

6ciib6ciiia

6ciiib

7bi

7aiiai

7aiibi

7aiibii

7aiiaii

7aia-7aib

7bi

7bii

7ci

7bii

7ciai

7ciaii

7ciaiii

111

115

AP

TIA

N

123

130

135

141

143

HAUTERIVIAN

BARREMIAN

VALANGINIAN

BERRIASIAN

EA

RL

YL

AT

E

3c

2c

2di

2dii

2diii

2div

3a

3b

4aiii4aiv

4bi

4bii

4biii

4ci4cii

5a5b5c5d

AL

BIA

N

CENOMANIAN

97.5

100.5

103

108

EA

RL

YM

IDL

AT

E

1aii

1aiii

1b

1c-2bi

2bii

2biii

1c

2biia

2biiib

2ci

2di

1biii

2biib

2biiic

2biiia

2ciia

2ciib

upper-lower

lower

upper

lower

upper

lower

uppermiddle

upper bii

upper bi

upper aii

upper ai

middle b

1aii

1aiiia

1bi

1aiiib

1aiiic

1bii

3c

2diii

2div

3a

3b

2dii middle aii

middle ai

lower

lower

upper

uppermost

lower

upper

6aib

4bi

4bii

4biii

4cia-4cic

5c5d

6aia

6bi

6cia

4aiv

4ciia-4ciiic

5aia-5aid

5aii-5bii

6aiia6aiib6aiiia6aiiib

6bii

lowermiddle

lowerupper

lowerupper

lower

uppermiddle

upperlower

di-diici-ciiibi-biiiai-aiva-ba-c

ab

c

d

ab

di-dii

4ai-4aii4aiii upper

6cib ci-ciii

bi-bv

ai-aiii

ca-bc

a

b

c

a

b

d

upper

lower

middle

MicroplanktonZones

DinocystZones

DinocystZones Dinocyst Zones

Key species occurrencesHelby, Morgan &Partridge 1987

ZoneCodes

AAP Memoir 242001

Sub-zones

Sub-zones

Morgan, Hooker& Ingram, 2002

UPDATED AGREEDSCHEME

Australian TimescaleYoung & Laurie 1996

Youngest occurrenceOldest occurrence

EA

RL

Y C

RE

TA

CE

OU

SL

AT

EC

RE

T.

STAGEPERIOD

LA

TE

JU

RA

SS

ICM

IDD

LE

JU

RA

SS

ICE

AR

LY

JU

RA

SS

IC

7d

Fig. 1

Carnarvonodinium morganii ACME

4ai-4aii

Reg

ion

alN

ort

h W

est

Sh

elf

Eve

nt

Mar

kers

KA

KV

K

JT

JK

JO

JC

UPDATED JURASSIC – EARLY CRETACEOUSDINOCYST ZONATION NWS AUSTRALIA

Robin Helby, Roger Morgan, and Alan D. PartridgeGeoscience Australia publication ISBN: 1 920871 01 2

Bibliographic reference: Helby, R., Morgan, R. and Partridge, A.D.,2004. Updated Jurassic – Early Cretaceous dinocyst zonation NWSAustralia. Geoscience Australia publication ISBN 1 920871 01 2.

Geoscience Australia has tried to make the information in this product asaccurate as possible. However, it does not guarantee that the information istotally accurate or complete. THEREFORE, YOU SHOULD NOT RELY SOLELYON THIS INFORMATION WHEN MAKING A COMMERCIAL DECISION.

© Commonwealth of Australia 2004

10A/B

Dinocysts notgenerallyreported.

Diconodinum multispinum

Xenascus asperatus

Pseudoceratiumludbrookiae

Canninginopsis denticulata

Muderongia tetracantha

Diconodinium davidii

Odontochitina operculata

Ascodinium cinctum

Muderongia australis

Muderongia testudinaria

Phoberocysta burgeri

D. multispinum

X. asperatus

D. armata

E. ludbrookiae

C. denticulata

M. tetracantha

D. davidii

O. operculata

M. australis

M. testudinaria

P. burgeri

A. cinctum

D. multispinum

X. asperatus

P. ludbrookiae

C. denticulata

M. tetracantha

D. davidii

O. operculata

M. australis

M. testudinaria

P. burgeri

Senoniasphaera tabulata

Systematophora areolata

Batioladinium reticulatum

Dissimulidinium lobispinosum

Cassiculosphaeridia delicata

Kalyptea wisemaniae

Pseudoceratium iehiense

Dingodinium jurassicumOmatia montgomeryi

Cribroperidinum perforans

Dingodinium swanense

Rigaudella aemula

Wanaea clathrata

Wanaea spectabilis

Egmontodinium torynum

Wanaea digitata

S. tabulata

S. areolata

B. reticulatum

E. torynum

O. montgomeryiC. perforans

P. iehiense

D. jurassicum

D. lobispinosum

C. delicata

K. wisemaniae

D. swanense

W. clathrata

W. spectabilis

R. aemula

W. digitata

S. tabulata

S. areolata

B. reticulatum

E. torynum

O. montgomeryiC. perforans

P. iehiense

D. jurassicum

D. lobispinosum

C. delicata

K. wisemaniae

D. swanense

W. clathrata

W. spectabilis

R. aemula

W. digitata

Wanaea indotata

Caddasphaera halosa

Dissiliodinium caddaense

Wanaeaverrucosa

W. indotata

Dapcodinium priscum

SkuadiniumSusadinium

D. priscum

W. indotata

C. halosa

D. caddaense

Nannoceratopsisgracilis

Wanaea indotata

Dissiliodinium caddaense

Nannoceratopsis deflandrei

Wanaea verrucosa

Luehndea Assemblage

Dapcodinium priscum

Wanaea clathrata

Wanaea spectabilis

Ctenidodinium ancorum

Voodooia tabulata

Ternia balmei

Diconodinum multispinum

Xenascus asperatus

Endoceratium ludbrookiae

Canninginopsis denticulata

Muderongia tetracantha

Diconodinium davidii

Odontochitina operculata

Muderongia australis

Muderongia testudinaria

Phoberocysta burgeri

Senoniasphaera tabulata

Systematophora areolata

Batioladinium reticulatum

Dissimulidinium lobispinosum

Cassiculosphaeridia delicata

Kalyptea wisemaniae

Pseudoceratium iehiense

Dingodinium jurassicumOmatia montgomeryi

Cribroperidinum perforans

Egmontodinium torynum

Dioxya armata

Dingodinium swanense

Dissimulidinium lobispinosum

Batioladinium reticulatum

Omatidinium amphiacanthum

Cassiculosphaeridia delicata ACMEKalyptea wisemaniae

Consistent Pseudoceratium iehiense

Egmontodinium torynum

Diconodinum multispinum

Xenascus asperatus

Endoceratium ludbrookiae

Muderongia tetracantha

Diconodinium davidii

Muderongia testudinaria

Phoberocysta burgeri

Senoniasphaera tabulata

Dioxya armata

Wanaea indotata

Consistent Dissiliodinium caddaense

Nannoceratopsis deflandrei

Wanaea verrucosa

Skuadinium biturbinatumSusadinium australisDapcodinium priscum

Consistent Wanaea clathrata

Scriniodinium crystallinumCtenidodinium ancorumVoodooia tabulata

Ternia balmei

Omatia montgomeryi

Tubotuberella missilis

Dingodinium swanense

Rigaudella aemula

Wanaea digitata

Odontochitina singhii

Craspedodinium indistinctum

Dioxya armata

Cannosphaeropsis australis

Dingodinium cerviculum

Ovoidinium striatum ACME

Diconodinium davidii ACME

Pseudoceratium turneriiMuderongia australis

Muderongia mcwhaei

Batioladinium longicornutum

Ascodinium cinctum ACME

Scriniodinium attadalense

Canningia reticulata

Phoberocysta neocomica (very spiny)

Phoberocysta neocomicaMuderongia spp.

Phoberocysta burgeri

Dingodinium cerviculum

Gardodinium lowii

Batioladinium reticulatumDissimulidinium lobispinosumBatioladinium "apicoramosa" Helby †

Dissimulidinium purattensePseudoceratium iehiense

Tubotuberella missilis

Wanaea clathrata

Wanaea talea

Cygnusicysta taltarniana ACME

Systematophora geminus

Wanaea spectabilis

Voodooia tabulataLithodinia protothymosa

Wanaea verrucosa

Endoscrinium kempiaeTernia balmei

Kylindrocysta spinosa

Ctenidodinium spp. (spiny varieties)

Susadinium australis

† Informal manuscript species

D. caddaense

Phoberocysta neocomica (less spiny)

Nummus similis ACME

Dissiliodinium caddaense

D. priscum

S. australis

Consistent Odontochitina spp.

Nummus monoculatus influx

Diconodinum cristatum suite

Fusiformacysta challisiana ACME

Consistent Wanaea talea

Acknowledgements. The authors would like to thankGeoscience Australia and the companies represented bytheir logos for assistance in compilation of this update.