Cobban, W., & Kennedy, W. (1990). Variation and ontogeny of Calycoceras (Proeucalycoceras) canitaurinum (Haas, 1949) from the Upper Cretaceous (Cenomanian) of the Western Interior of the United States.
Чикаго-гийн эшлэл (17 дахь хэвлэлт)Cobban, W., ба W. Kennedy. Variation and Ontogeny of Calycoceras (Proeucalycoceras) Canitaurinum (Haas, 1949) from the Upper Cretaceous (Cenomanian) of the Western Interior of the United States. 1990.
MLA -ийн эшлэл (9 дэх хэвлэлт)Cobban, W., ба W. Kennedy. Variation and Ontogeny of Calycoceras (Proeucalycoceras) Canitaurinum (Haas, 1949) from the Upper Cretaceous (Cenomanian) of the Western Interior of the United States. 1990.
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