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https://www.noaa.gov/media/digital-library-photo/pl23expl3021jpgDescription
The Challenger Reports. Vol. IX, Plate CI. The Foraminifera. Polytrema_Tinoporus (Tinoporus_Gypsina). See expl3020 for accompanying text.
Credit
NOAA Central Library Historical Collections
Collection
Voyage to Inner Space
History of Oceanography Collection
Expeditions and Cruises
British Cruises
Keywords
Historic Exploration