Columbia subject headings:
Brachiopoda, Fossil--Norway--Oslo Region.
Paleontology--Norway--Oslo Region.
Paleontology--Silurian.
Strophomenida--Norway--Oslo Region.
Harvard subject headings:
Princeton subject headings:
Brachiopoda, Fossil--Norway--Oslo Region.
Paleontology--Norway--Oslo Region.
Paleontology--Silurian.
Strophomenida--Norway--Oslo Region.