Variation and ontogeny of Calycoceras (Proeucalycoceras) canitaurinum (Haas, 1949) from the Upper Cretaceous (Cenomanian) of the Western Interior of the United States

Variation and ontogeny of Calycoceras (Proeucalycoceras) canitaurinum (Haas, 1949) from the Upper Cretaceous (Cenomanian) of the Western Interior of the United States

Mantelliceras canitaurinum Haas, 1949 was originally described from the basal part of the Cody Shale near Greybull, Wyo. The species, which belongs to the genus Calycoceras Hyatt, 1900, subgenus Proeucalycoceras Thomel, 1972, shows considerable variation. This upper Cenomanian index fossil is known...

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Chi tiết về thư mục
Những tác giả chính:	Cobban, W, Kennedy, W
Định dạng:	Journal article
Ngôn ngữ:	English
Được phát hành:	1990

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