Table T5.
Ages of biostratigraphically useful radiolarian datums in the New Zealand
region.
Age
(Ma)
Radiolarian
event
Source
0.18
FO Buccinosphaera
invaginata
Johnson et al. (1989)
0.46
LO Stylatractus
universus
Caulet (1991)
0.83
LO Pterocanium
trilobum
Lazarus (1992)
1.81
Pliocene/Pleistocene
boundary
1.92
LO Eucyrtidium
calvertense
Lazarus (1992)
1.93
FO Lithelius
nautiloides
Caulet (1991)
1.93
FO Triceraspyris
antarctica
Caulet (1991)
2.42
LO Helotholus vema
Lazarus (1992)
2.44
LO Desmospyris
spongiosa
Lazarus (1992)
2.61
FO Cycladophora
davisiana
Lazarus (1992)
3.5
LO Prunopyle titan
Lazarus (1992)
4.57
FO Helotholus vema
Lazarus (1992)
4.6-4.62
LO Helotholus praevema
Caulet (1991)
4.98-5.01
FO Desmospyris
spongiosa
Caulet (1991)
5.01-5.11
FO Prunopyle titan
Caulet (1991)
5.03
LCO Lychnocanoma
grande
Lazarus (1992)
5.2
Miocene/Pliocene boundary
6.1
LO Amphymenium
challengerae
Lazarus (1992)
6.58
FO Amphymenium
challengerae
Lazarus (1992)
6.79
FO Lamprocyrtis
heteroporos
Morely and Nigrini (1995)
7.71
FO Acrosphaera?
labrata
Lazarus (1992)
9.12
LO Cycladophora
spongothorax
Lazarus (1992)
9.22
LO Stichocorys
peregrina
Lazarus (1992)
9.32
LCO Ceratocyrtis stigi
Lazarus (1992)
9.83
FCO Ceratocyrtis stigi
Lazarus (1992)
10.36
FO Acrosphaera
australis
Lazarus (1992)
10.53
LO Cycladophora
humerus
Lazarus (1992)
10.61
FO Eucyrtidium
pseudoinflatum
Lazarus (1992)
10.77
LO Actinomma glownini
Lazarus (1992)
12.55
FO Cycladophora
spongothorax
Lazarus (1992)
12.68
FO Dendrospyris
megalocephalis
Lazarus (1992)
13.61
FO Actinomma glownini
Lazarus (1992)
14.18
FO Cycladophora
humerus
Lazarus (1992)
17.02
FO Eucyrtidium
punctatum
Lazarus (1992)
(19.11
FO Cycladophora golli
regipileus
Lazarus (1992)
20.72
FO Cyrtocapsella
longithorx
Lazarus (1992)
22.48
FO Cyrtocapsella
tetrapera
Harwood et al. (1992)
23.35-24.73
LO Lithomelissa
sphaerocephalis
Takemura and Ling (1997)
23.8
Oligocene/Miocene boundary
23.94-25.26
FO Cycladophora
campanula
Caulet (1991)
23.94-25.26
FO Gondwanaria hister
Caulet (1991)
24.12-?28.75
LO Axoprunum
irregularis
Takemura and Ling (1997)
26.77-30.05
LO Eucyrtidium
antiquum
Caulet (1991)
26.77-30.05
LO Lophocyrtis
longiventer
Caulet (1991)
?28.28-29.40
FO Calocyclas sp.
A
Takemura and Ling (1997)
?28.28-29.40
LO Lithomelissa
challengerae
Takemura and Ling (1997)
28.75-30.10
LO Lychnocanoma conica
Takemura and Ling (1997)
30.48-?33.06
LO Calocyclas cf.
semipolita
Takemura and Ling (1997)
30.94-34.66
FO Axoprunum
irregularis
Takemura and Ling (1997)
30.94-34.66
FO Eucyrtidium
antiquum
Takemura and Ling (1997)
30.94-34.66
LO Eucyrtidium
spinosum
Takemura and Ling (1997)
Note: FO = first occurrence, LO = last occurrence, FCO = first common occurrence, LCO = last common occurrence. This table is also available in ASCII format.