Table T4. Ages of radiolarian bioevents.

Event
Taxon
name
Age
(Ma)
Source of
datum
FO Stylatractus sp. A of Nakaseko and Nishimura (1982)

LO Stylatractus universus Hays 0.45 McIntyre and Kaczmarska (1996)
LO Antarctissa cylindrica Petrushevskaya 0.65 Caulet (1991)
LO Pterocarnium charybdeum trilobum (Haeckel) 0.88 Lazarus (1992)
LO Eucyrtidium calvertense Haeckel 1.90 Lazarus (1992)
LO Helotholus vema Hays 2.40 Ramsay and Baldauf (1999)
LO Prunopyle titan Campbell et Clark 3.48 Caulet (1991)
LO Desmospyris spongia Hays 2.46 Caulet (1991)
LO Lampromitra coronata Haeckel 3.35 Lazarus (1992)
FO Helotholus vema Hays 4.50 Ramsay and Baldauf (1999)
LCO Lychnocanoma grande (Campbell et Clark) 5.00 Lazarus (1992)
LO Amphymenium challengerae Weaver 6.10 Lazarus (1992)
FO Amphymenium challengerae Weaver 6.60 Recalculated
FO Acrosphaera (?) labrata Lazarus 7.80 Lazarus (1992)
LO Cycladophora spongothorax (Hays) 9.10 Lazarus (1992)
ET A. murrayana (Haeckel) A. australis Lazarus 10.40 Lazarus (1992)
FO Eucyrtidium pseudoinflatum Weaver 10.60 Lazarus (1992)
LO Actinomma golownini Petrushevskaya 10.80 Lazarus (1992)
FO Cycladophora spongothorax (Hays) 12.14 Lazarus (1992)
FO Dendrospyris megalocephalis Chen 12.78 Lazarus (1992)
FO Actinomma golownini Petrushevskaya 13.22 Lazarus (1992)
FO Cycladophora humerus (Petrushevskaya) 14.18 Abelmann (1990)
FO Eucyrtidium punctatum Ehrenberg 17.03 Abelmann (1990)
FO Cycladophora golli regipileus (Chen) 19.10 Abelmann (1990)
FO Theocorys longithorax Petrushevskaya 20.65 Abelmann (1990)
FO Cycladophora antiqua Abelmann 21.95 Abelmann (1990)
FO Cyrtocapsella tetrapera (Haeckel) 23.62 Sanfilippo and Nigrini (1998)
LO Axoprunum (?) irregularis Takemura 32.70 Recalculated
FO Eucyrtidium antiquum Caulet 32.96 Recalculated
FO Eucyrtidium spinosum Takemura 37.00 Recalculated
FO Lithapium mitra (Ehrenberg) 39.00 Recalculated
FO Eusyringium fistuligerum (Ehrenberg) 42.00 Recalculated
FO Eusyringium lagena (Ehrenberg) 47.00 Recalculated
FO Dictyoprora mongolfieri (Ehrenberg) 51.00 Recalculated
LO Bekoma divaricata Foreman 53.20 Recalculated
ET Bekoma bidartensis Riedel et Sanfilippo B. divaricata 54.40 Recalculated
LO Bekoma campechensis Foreman 55.60 Recalculated
FO Bekoma campechensis Foreman 58.00 Recalculated
FO Miscroscidaicapsa (?) sp. 59.70 Recalculated
FO Buryella tetradica Foreman 60.90 Spencer-Cervato (1999)
FO Buryella foremanae Petrushevskaya 62.80 Spencer-Cervato (1999)
FO Buryella granulata (Petrushevskaya) 63.90 Spencer-Cervato (1999)
FO Amphisphaera kina Hollis 64.60 Spencer-Cervato (1999)
FO Amphisphaera aotea Hollis 65.10 Spencer-Cervato (1999)

Note: FO = first occurrence, LO = last occurrence, LCO = last consistent occurrence, ET = earliest transition.