By Heldt M.   Mutterlose J.   Berner U.   Erbacher J.   in Newsletters on Stratigraphy

ISSN:0078-0421|45|2|151-169

E. Schweizerbart'sche Verlagsbuchhandlung‎(2012)‎

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By Kößler P.   Herrle J.O.   Appel E.   Erbacher J.   Hemleben C.   in Cretaceous Research

ISSN:0195-6671|22|3|321-331

Academic Press‎(2001)‎

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