Columbia subject headings:
Bivalves, Fossil.
Gastropoda, Fossil.
Mollusks, Fossil--Japan.
Paleontology--Japan.
Paleontology--Mesozoic.
Paleontology--Paleozoic.
Harvard subject headings:
Bivalves, Fossil--Japan.
Bivalves, Fossil.
Gastropoda, Fossil--Japan.
Gastropoda, Fossil.
Paleontology--Japan
Paleontology--Mesozoic
Paleontology--Paleozoic
Princeton subject headings:
Bivalves, Fossil--Japan.
Gastropoda, Fossil--Japan.
Paleontology--Japan.
Paleontology--Mesozoic.
Paleontology--Paleozoic.