Species event
|
Age (Ma)
|
Zone/Subzone base
|
Reference
|
T Globorotalia (Truncorotalia) tosaensis
|
0.61
|
PT1b
|
Srinivasan and Sinha, 1992
|
T Globigerinoides fistulosus
|
1.77
|
PT1a
|
Shackleton et al., 1990
|
Pliocene/Pleistocene boundary
|
1.81
|
|
Lourens et al., 2004
|
B Globorotalia (Truncorotalia) truncatulinoides
|
1.92
|
|
Chaisson and Pearson, 1997
|
T Globigerinoides extremus
|
1.98
|
|
Chaisson and Pearson, 1997
|
T Globorotalia pseudomiocenica
|
2.3
|
PL6
|
Berggren et al., 1995
|
T Globoturborotalita woodi
|
2.3
|
|
Chaisson and Pearson, 1997
|
T Globorotalia (Menardella) multicamerata
|
2.98
|
|
Berggren et al., 1995
|
T Dentoglobigerina altispira
|
3.47
|
PL5
|
Shackleton et al., 1995
|
T Sphaeroidinellopsis seminulina
|
3.59
|
PL4
|
Shackleton et al., 1995
|
T Globorotalia (Hirsutella) margaritae
|
3.85
|
PL3
|
Chaisson and Pearson, 1997
|
X Pulleniatina sinistral → dextral
|
4.08
|
|
Chaisson and Pearson, 1997
|
T Globoturborotalita nepenthes
|
4.37
|
PL2
|
Chaisson and Pearson, 1997
|
B Globorotalia (Menardella) exilis
|
4.45
|
|
Chaisson and Pearson, 1997
|
T Globorotalia (Hirsutella) cibaoensis
|
4.61
|
PL1b
|
Berggren et al., 1995
|
Miocene/Pliocene boundary
|
5.33
|
|
Lourens et al., 2004
|
B Sphaeroidinella dehiscens s.l.
|
5.54
|
|
Chaisson and Pearson, 1997
|
B Globorotalia tumida
|
5.57
|
PL1a
|
Shackleton et al., 1995
|
B Turborotalita humilis
|
5.81
|
|
Chaisson and Pearson, 1997
|
B Globorotalia (Hirsutella) margaritae
|
6.08
|
|
Chaisson and Pearson, 1997
|
T Globorotalia lenguaensis
|
6.13
|
M14
|
Berggren et al., 1995
|
B Globorotalia plesiotumida
|
8.58
|
M13b
|
Chaisson and Pearson, 1997
|
B Neogloboquadrina acostaensis
|
9.83
|
M13a
|
Chaisson and Pearson, 1997
|
T Paragloborotalia mayeri
|
10.46
|
M12
|
Chaisson and Pearson, 1997
|
B Globoturborotalita decoraperta
|
11.49
|
|
Chaisson and Pearson, 1997
|
B Globoturborotalita nepenthes
|
11.63
|
M11
|
Turco et al., 2002
|
T Globorotalia (Fohsella) fohsi s.l. (including lobata and robusta)
|
11.79
|
M10/N13
|
Chaisson and Pearson, 1997
|
B Globorotalia (Fohsella) foshi robusta
|
13.13
|
M9b
|
Chaisson and Pearson, 1997
|
B Globorotalia (Fohsella) fohsi s.l.
|
13.41
|
M8/M9a/N12
|
Chaisson and Pearson, 1997
|
T Globorotalia praescitula
|
13.73
|
|
Turco et al., 2002
|
B Globorotalia (Fohsella) “praefohsi”
|
13.77
|
N11
|
Turco et al., 2002
|
T Globorotalia (Fohsella) peripheroronda
|
13.8
|
|
Turco et al., 2002
|
T Clavatorella bermudezi
|
13.82
|
|
Shackleton et al., 1999
|
B Globorotalia (Fohsella) peripheroacuta
|
14.24
|
M7/N10
|
Pearson and Chaisson, 1997
|
B Globorotalia (Menardella) praemenardii
|
14.38
|
|
Lourens et al., 2004
|
T Globigerinatella insueta
|
14.66
|
|
Pearson and Chaisson, 1997
|
B Orbulina spp.
|
14.74
|
M6/N9
|
Shackleton et al., 1999
|
B Clavatorella bermudezi
|
14.89
|
|
Pearson and Chaisson, 1997
|
B Globorotalia (Menardella) archeomenardii
|
16.26
|
|
Pearson and Chaisson, 1997
|
B Praeorbulina glomerosa
|
16.27
|
M5b
|
Berggren et al., 1995
|
B Praeorbulina sicana
|
16.97
|
M5a
|
Berggren et al., 1995
|
B Globorotalia birnageae*
|
16.69
|
|
Berggren et al., 1995
|
T Catapsydrax dissimilis
|
17.54
|
M4
|
Berggren et al., 1995
|
B Globigerinatella insueta
|
17.59
|
M3
|
Pearson and Chaisson, 1997
|
T Globoquadrina binaiensis
|
19.09
|
|
Pearson and Chaisson, 1997
|
T Paragloborotalia kugleri
|
21.12
|
M2
|
Berggren et al., 1995
|
T Paragloborotalia pseudokugleri
|
21.31
|
|
Berggren et al., 1995
|
B Globoquadrina dehiscens
|
22.44
|
M1b
|
Berggren et al., 1995
|
T Globigerina ciperoensis
|
22.9
|
|
Pearson and Chaisson, 1997
|
B Paragloborotalia kugleri
|
22.96
|
M1a
|
Berggren et al., 1995
|
Oligocene/Miocene boundary
|
23.03
|
|
Lourens et al., 2004
|
B Paragloborotalia pseudokugleri
|
25.2
|
|
Berggren et al., 1995
|
T Paragloborotalia opima
|
26.9
|
O6
|
Wade et al., 2007
|
Tc Chiloguembelina cubensis
|
28
|
O5
|
Wade et al., 2007
|
B Globigerina angulisuturalis
|
29.2
|
O4
|
Berggren et al., 1995
|
T Subbotina angiporoides
|
29.8
|
|
Berggren et al., 1995
|
T Turborotalia ampliapertura
|
30.3
|
O3
|
Berggren et al., 1995
|
B Paragloborotalia opima
|
30.8
|
|
Berggren et al., 1995
|
T Pseudohastigerina naguewichiensis
|
32
|
O2
|
Berggren et al., 1995
|
T Hantkenina spp.
|
33.8
|
O1
|
Berggren and Pearson, 2005
|
Eocene/Oligocene boundary
|
33.8
|
|
Pälike et al., 2006a
|
T Turborotalia cerroazulensis
|
33.9
|
|
Berggren and Pearson, 2005
|
T Globigerinatheka index
|
34.5
|
E16
|
Berggren and Pearson, 2005
|
T Globigerinatheka semiinvoluta
|
35.8
|
E15
|
Berggren and Pearson, 2005
|
T Morozovelloides crassatus
|
38.1
|
E14
|
Wade, 2004
|
T Acarinina mcgowrani
|
38.1
|
|
Wade, 2004
|
T Orbulinoides beckmanni
|
40
|
E13
|
Wade, 2004
|
B Orbulinoides beckmanni
|
40.8
|
E12
|
Berggren et al., 1995
|
T Acarinina bullbrooki
|
40.8
|
|
Berggren et al., 1995
|
T Guembelitrinoides nuttalli
|
42.3
|
E11
|
Berggren and Pearson, 2005
|
B Turborotalia pomeroli
|
42.4
|
|
Berggren et al., 1995
|
B Morozovelloides lehneri
|
43.5
|
|
Berggren et al., 1995
|
T Morozovella aragonensis
|
43.6
|
E10
|
Berggren et al., 1995
|
B Globigerinatheka kugleri
|
45.8
|
E9
|
Berggren et al., 1995
|
B Guembelitrinoides nutalli
|
46.4
|
E8
|
Wade et al., 2011
|
B Acarinina cuneicamerata
|
50.4
|
E7
|
Hancock et al., 2002
|
B Astrorotalia palmerae
|
50.4
|
|
Berggren et al., 1985
|
T Morozovella subbotinae
|
50.8
|
E6
|
Berggren and Pearson, 2005
|
B Acarinina pentacamerata
|
50.8
|
|
Berggren and Pearson, 2005
|
B Morozovella aragonensis
|
52.3
|
E5
|
Berggren et al., 1995
|
T Subbotina velascoensis
|
53.5
|
|
Berggren et al., 1995
|
T Morozovella aequa
|
53.6
|
|
Berggren et al., 1995
|
B Morozovella lensiformis
|
54
|
E4
|
Berggren et al., 1995
|
T Morozovella velascoensis
|
54.5
|
E3
|
Berggren and Pearson, 2005
|
B Morozovella gracilis
|
54.7
|
|
Berggren et al., 1995
|
B Pseudohastigerina wilcoxensis
|
55.4
|
E2
|
Berggren and Pearson, 2005
|
Paleocene/Eocene boundary
|
55
|
|
Berggren et al., 1995
|
B Globanomalina australiformis
|
55.5
|
|
Berggren et al., 1995
|
B Acarinina sibaiyaensis
|
55.5
|
E1
|
Berggren and Pearson, 2005
|
T Morozovella acuta
|
55.7
|
|
Berggren et al., 1995
|
B Morozovella subbotinae
|
55.9
|
|
Berggren et al., 1995
|
T Globanomalina pseudomenardii
|
55.9
|
P5
|
Berggren et al., 1995
|
T Acarinina mckannai
|
56.3
|
|
Berggren et al., 1995
|
B Acarinina soldadoensis
|
56.5
|
P4c
|
Berggren et al., 1995
|
T Acarinina subsphaerica
|
57.1
|
P4b
|
Berggren et al., 1995
|
B Acarinina mckannai
|
59.1
|
|
Berggren et al., 1995
|
B Globanomalina pseudomenardii
|
59.2
|
P4a
|
Berggren et al., 1995
|
B Igorina albeari
|
60
|
P3b
|
Berggren et al., 1995
|
B Morozovella angulata
|
61
|
P3a
|
Berggren et al., 1995
|
B Globanomalina imitata
|
(61.3)
|
|
Berggren et al., 1995
|
B Praemurica unicinata
|
61.4
|
P2
|
Berggren and Pearson, 2005
|
B Globorotalia compressa
|
62.9
|
P1c
|
Berggren and Pearson, 2005
|
B Praemurica inconstans
|
62.9
|
|
Berggren and Pearson, 2005
|
B Parasubottina varianta
|
63
|
|
Berggren et al., 1995
|
B Subbotina triloculinoides
|
64.3
|
P1b
|
Berggren et al., 1995
|
T Parvularugoglobigerina eugubina
|
64.8
|
P1a
|
Berggren and Pearson, 2005
|
B Parvularugoglobigerina extensa
|
64.9
|
|
Olsson et al., 1999
|
B Parvularugoglobigerina eugubina
|
64.97
|
Pα
|
Berggren et al., 1995
|
T Globotruncana
|
65
|
P0
|
Berggren et al., 1995
|
* = Zone M4 is not divided into Subzones M4a and M4b because the base of Zone M5, as defined by B Praeorbulina sicana, has been recalibrated to 16.97 Ma (Lourens et al., 2004), which is older than B Globorotalia birnageae, previously used to define the base of Subzone M4b. B = base, T = top, Tc = top common, X = coiling change. (61.3) = estimated age.