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Cenomanian
5
Cretaceous
5
Turonian
4
Hokkaido
3
Yezo Group
3
planktonic foraminifera
3
Biostratigraphy
2
Hobetsu
2
Carbon isotope
1
Carbon isotopes
1
Collignoniceras
1
Datum plane
1
Helvetoglobotruncana
1
Helvetoglobotruncana helvetica
1
Inoceramus
1
OAE
1
Oceanic Anoxic Event (OAE)
1
Organic carbon
1
Oyubari section
1
Planktonic foraminifera
1
Pueblo section
1
Sakhalin
1
T) boundary
1
Turonian(C
1
Whiteinella archaeocretacea Zone
1
bio-stratigraphy
1
biostratigraphy carbon
1
carbon isotope
1
correlation
1
helvetica
1
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