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Pachydiscus Zittel 1884 from: Ward, P.D..Kennedy, W.J.. (1993): Maastrichtian Ammonites from the Biscay Region (France, Spain) . Memoir (The Paleontological Society), Journal of Paleontology34 (Supplement to Vol. 67)(5) p. 1-58
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Subgenus Pachydiscus Zittel 1884



Discussion / Comments:
Cobban & Kennedy (1995):
[for synonymy see Kennedy, 1986a, page 34] TYPE SPECIES.- Ammonites neubergicus Hauer, 1858, page 12, plate 2, figures 1-3, plate 3, figures 1, 2, by the subsequent designation of de Grossouvre, 1894, page 177.
Synonym list:
Ward & Kennedy (1993):
1900 Parapachydiscus Hyatt. - Hyatt :
1958 Joaquinites Anderson. - Anderson :
References:

Hyatt,A.. (1900):
Cephalopoda.
In: Textbook of Palaeontology Eds: Zittel, v.K.A.. p. 502-604

Anderson,F.M.. (1958):
Upper Cretaceous of the Pacific Coast: , 71, 378 p. . New York, Geological Society of America Memoir Vol. 71 p. 378

Ward,P.D.. and Kennedy,W.J.. (1993):
Maastrichtian Ammonites from the Biscay Region (France, Spain) . Memoir (The Paleontological Society), Journal of Paleontology34 (Supplement to Vol. 67)(5) p. 1-58

Cobban,W.A.. and Kennedy,W.J.. (1995):
Maastrichtian ammonites chiefly from the Prairie Bluff Chalk in Alabama and Mississippi . Journal of Paleontology Vol. 69(5) p. 1-40

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