Table 4.

Table 4 A–F. Low-latitude absolute ages. (A) Indian Ocean—Quaternary and Pliocene.

EPOCH RADIOLARIAN
EVENT
Indian Ocean

literature MD
81-357 MD
81-369 MD
81-374 MD
81-375 RC
14-22 VM
29-40 VM
34-53 DSDP
214

source 1 1 1 1 1 1 1 2, 3

Quaternary Bm Buccinosphaera invaginata

Tm Stylatractus universus

0.46
0.49
0.45
0.47
0.37
0.41

Bm Collosphaera tuberosa

0.42
0.46
0.57
0.59
0.41
0.47

Tm Pterocorys campanula
0.75
0.78 0.72
0.77
0.73
0.76

Bm Pterocorys hertwigii
0.81
0.84

0.82
0.84

0.7
1.0

Tm Anthocyrtidium angulare
0.99
1.02

1.01
1.04

0.9
1.0

Bm Lamprocyrtis nigriniae
1.02
1.04

1.04
1.07

Tm Lamprocyrtis neoheteroporos
1.09
1.12

1.10
1.13

Pliocene Tm Pterocanium prismatium
1.54
1.56 1.27
1.37
1.52
1.55

1.6
1.7

Bm Anthocyrtidium angulare
1.63
1.64 1.46
1.56 1.63
1.80 1.59
1.62

1.7
1.8

Tm Theocorythium vetulum
1.86
1.89 1.81
1.89
1.81
1.85

1.7
1.8

Bm Lamprocyrtis neoheteroporos
2.51
2.54 2.29
2.31 2.41
2.44

Bm Theocorythium trachelium
2.54
2.56 2.39
2.42 2.44
2.56
2.46
2.54
2.4
2.5

Tm Stichocorys peregrina
2.62
2.64 2.46
2.59 2.63
2.68
2.62
2.70
2.6
2.7

Ev D. avita->
D. tetrathalamus

Tm Phormostichoartus fistula
3.26
3.28
3.23
3.26
3.23
3.30
3.3
3.4

Tm Lychnodictyum audax
3.33
3.35
3.29
3.32
3.30
3.37
3.3
3.4

Tm Phormostichoartus doliolum
3.53
3.55
3.50
3.55
3.51
3.58
3.4
3.5

Bm Amphirhopalum ypsilon 3.73
3.76 3.78
3.80
3.73
3.80
3.74
3.82
3.6
3.7

Tm Spongaster pentas 3.70
3.73 3.80
3.81
3.73
3.80
3.74
3.82
3.5
3.6

Bm Spongaster tetras tetras 3.70
3.73 3.83
3.85
3.73
3.80
3.74
3.82
3.6
3.7

Ev D. penultima->
D. avita

Bm Theocorythium vetulum

Tm Spongaster berminghami 3.76
3.78 3.85
3.87
3.80
3.85

3.8
3.9

EPOCH	RADIOLARIAN EVENT			Indian Ocean
			literature	MD 81-357	MD 81-369	MD 81-374	MD 81-375	RC 14-22	VM 29-40	VM 34-53	DSDP 214
			source	1	1	1	1	1	1	1	2, 3
Quaternary	Bm	Buccinosphaera invaginata
	Tm	Stylatractus universus				0.46 0.49		0.45 0.47		0.37 0.41
	Bm	Collosphaera tuberosa				0.42 0.46		0.57 0.59		0.41 0.47
	Tm	Pterocorys campanula			0.75 0.78	0.72 0.77		0.73 0.76
	Bm	Pterocorys hertwigii			0.81 0.84			0.82 0.84			0.7 1.0
	Tm	Anthocyrtidium angulare			0.99 1.02			1.01 1.04			0.9 1.0
	Bm	Lamprocyrtis nigriniae			1.02 1.04			1.04 1.07
	Tm	Lamprocyrtis neoheteroporos			1.09 1.12			1.10 1.13
Pliocene	Tm	Pterocanium prismatium			1.54 1.56	1.27 1.37		1.52 1.55			1.6 1.7
	Bm	Anthocyrtidium angulare			1.63 1.64	1.46 1.56	1.63 1.80	1.59 1.62			1.7 1.8
	Tm	Theocorythium vetulum			1.86 1.89	1.81 1.89		1.81 1.85			1.7 1.8
	Bm	Lamprocyrtis neoheteroporos			2.51 2.54	2.29 2.31	2.41 2.44
	Bm	Theocorythium trachelium			2.54 2.56	2.39 2.42	2.44 2.56		2.46 2.54		2.4 2.5
	Tm	Stichocorys peregrina			2.62 2.64	2.46 2.59	2.63 2.68		2.62 2.70		2.6 2.7
	Ev	D. avita-> D. tetrathalamus
	Tm	Phormostichoartus fistula			3.26 3.28		3.23 3.26		3.23 3.30		3.3 3.4
	Tm	Lychnodictyum audax			3.33 3.35		3.29 3.32		3.30 3.37		3.3 3.4
	Tm	Phormostichoartus doliolum			3.53 3.55		3.50 3.55		3.51 3.58		3.4 3.5
	Bm	Amphirhopalum ypsilon		3.73 3.76	3.78 3.80		3.73 3.80		3.74 3.82		3.6 3.7
	Tm	Spongaster pentas		3.70 3.73	3.80 3.81		3.73 3.80		3.74 3.82		3.5 3.6
	Bm	Spongaster tetras tetras		3.70 3.73	3.83 3.85		3.73 3.80		3.74 3.82		3.6 3.7
	Ev	D. penultima-> D. avita
	Bm	Theocorythium vetulum
	Tm	Spongaster berminghami		3.76 3.78	3.85 3.87		3.80 3.85				3.8 3.9