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Bulletin no.215 (1957)
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Planktonic foramini-feral families Hantkeninidae, Orbulinidae, Globorotaliidae and Globotruncanidae
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By: Bolli, Hans M. (Hans Martin), - Loeblich, Alfred R. (Alfred Richard) - Tappan, Helen Niña,
Type: Article
In: Bulletin
Volume: 215
Date: 1957
Page Range: 3--50
Publication info: Washington G.P.O 1907-1971
The genera Praeglobotruncana, Rotalipora, Globotruncana and Abathomphalus in the upper Cretaceous of Trinidad, B.W.I
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Type: Article
In: Bulletin
Volume: 215
Date: 1957
Page Range: 51--60
Publication info: Washington G.P.O 1907-1971
The genera Globigerina and Globorotalia in the Paleocene-lower Eocene Lizard Springs formation at Trinidad, B.W.I
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By: Bolli, Hans M. (Hans Martin),
Type: Article
In: Bulletin
Volume: 215
Date: 1957
Page Range: 61--82
Publication info: Washington G.P.O 1907-1971
Chiloguembelina Loeblich and Tappan and related Foraminifera from the Lower Tertiary of Trinidad, B.W.I
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By: Beckmann, Jean-Pierre,
Type: Article
In: Bulletin
Volume: 215
Date: 1957
Page Range: 83--95
Publication info: Washington G.P.O 1907-1971
Planktonic Foraminifera from the Oligocene-Miocene Cipero and Langua formations of Trinidad, B.W.I
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By: Bolli, Hans M. (Hans Martin),
Type: Article
In: Bulletin
Volume: 215
Date: 1957
Page Range: 97--123
Publication info: Washington G.P.O 1907-1971
A revision of the foraminiferal family Heterohelicidae
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Type: Article
In: Bulletin
Volume: 215
Date: 1957
Page Range: 133--154
Publication info: Washington G.P.O 1907-1971
Planktonic Foraminifera from the Eocene Naver and San Fernando formations of Trinidad, B.W.I
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By: Bolli, Hans M. (Hans Martin),
Type: Article
In: Bulletin
Volume: 215
Date: 1957
Page Range: 155--172
Publication info: Washington G.P.O 1907-1971
Planktonic Foraminifera of Paleocene and early Eocene age from the Gulf and Atlantic coastal plains
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By: Loeblich, Alfred R. (Alfred Richard) - Tappan, Helen Niña,
Type: Article
In: Bulletin
Volume: 215
Date: 1957
Page Range: 173--198
Publication info: Washington G.P.O 1907-1971
New Cretaceous index Foraminifera from northern Alaska
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Type: Article
In: Bulletin
Volume: 215
Date: 1957
Page Range: 201--222
Publication info: Washington G.P.O 1907-1971
The foraminiferal genus Cruciloculina d'Orbigny, 1839
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Type: Article
In: Bulletin
Volume: 215
Date: 1957
Page Range: 233--235
Publication info: Washington G.P.O 1907-1971