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†Obiraceras Matsumoto 1975
urn:lsid:organismnames.com:name:27261
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†Obiraceras Matsumoto 1975
Matsumoto 1975. Additional acanthoceratids from Hokkaido. (Studies of the Cretaceous ammonites from Hokkaido and Saghalien - 28.). Memoirs Fac Sci Kyushu Univ (Geol), 22(2) 1975: 99-163