Topic
planktonic foraminifera
Cenomanian
3
Hokkaido
3
Yezo Group
3
Cretaceous
2
Hobetsu
2
Turonian
2
biostratigraphy
2
"Orbitolina-Praecaprotina limestone"
1
456
1
Early Cretaceous
1
Helvetoglobotruncana
1
Helvetoglobotruncana helvetica
1
Ichishi Group
1
Kojyakui-sho
1
Middle Miocene
1
Miocene
1
Miocene Climatic Optimum
1
N.7/N.8 zona lboundary
1
Obata Formation
1
Oceanic Anoxic Event (OAE)
1
Oyubari section
1
Pueblo section
1
T) boundary
1
Turonian(C
1
Whiteinella archaeocretacea Zone
1
bathyal zone
1
bio-stratigraphy
1
biostratigraphy carbon
1
carbon isotope
1
diatom
1
helvetica
1
isotope
1
microfossils
1
olistostrome
1
ostracods
1
σ^<13>C spike
1