Upper Cretaceous Fossil Molluscs in South America and West Africa

Nature ◽  
1965 ◽  
Vol 207 (5004) ◽  
pp. 1384-1384 ◽  
Author(s):  
R. A. REYMENT
Keyword(s):  
South America ◽  
West Africa ◽  
Upper Cretaceous

The Cretaceous and Paleocene pleurotomariid (Gastropoda: Vetigastropoda) fauna of Seymour Island, Antarctica

2009 ◽  
Vol 83 (5) ◽  
pp. 750-766 ◽  
Author(s):  
M. G. Harasewych ◽  
Anton Oleinik ◽  
William Zinsmeister
Keyword(s):  
Species Richness ◽  
New Zealand ◽  
South America ◽  
Late Cretaceous ◽  
Upper Cretaceous ◽  
Southern India ◽  
New Combination ◽  
The Family ◽  
The Status ◽  
Seymour Island

Leptomaria antipodensis and Leptomaria hickmanae are described from the Upper Cretaceous [Maastrichtian] Lopez de Bertodano Formation, Seymour Island, and represent the first Mesozoic records of the family Pleurotomariidae from Antarctica. Leptomaria stillwelli, L. seymourensis, Conotomaria sobralensis and C. bayeri, from the Paleocene [Danian], Sobral Formation, Seymour Island, are described as new. Leptomaria larseniana (Wilckens, 1911) new combination, also from the Sobral Formation, is redescribed based on better-preserved material. The limited diversity of the pleurotomariid fauna of Seymour Island is more similar to that of the Late Cretaceous faunas of Australia and New Zealand in terms of the number of genera and species, than to the older, more diverse faunas of South America, southern India, or northwestern Madagascar, supporting the status of the Weddelian Province as a distinct biogeographic unit. The increase in the species richness of this fauna during the Danian may be due to the final fragmentation of Gondwana during this period.

Two new Pseudephedrus Starý, aphid parasites (Hymenoptera: Aphidiidae) associated with Nothofagus in South America. With notes on the continental drift

1976 ◽  
Vol 7 (1) ◽  
pp. 24-30 ◽  
Keyword(s):  
South America ◽  
West Africa ◽  
Host Range ◽  
Continental Drift ◽  
South Australia ◽  
Nothofagus Obliqua

AbstractPseudephedrus chilensis n.sp., a parasite of Neuquenaphis schlingeri H. R. Lambers on Nothofagus obliqua, and P. lambersi n.sp., a parasite of N. similis H. R. Lambers on Nothofagus pumilo in South America are described. A key to the ♀♀ of the three known species of Pseudephedrus is provided. Taxonomical affinities, distribution, and host range of the aphidiid genera Parephedrus Starý & Carver, 1971, Pseudephedrus Starý, 1972, and Vanhartenia Starý & v. Harten, 1972 are examined and discussed. These aphidiids are found to be specific parasites of ancient Callaphidid aphids, viz. Sensoriaphis furcifera in South Australia, Neolizerius acunai Holman in Cuba, Neuquenaphis spp. in Chile, and Paoliella monotuberculata in West Africa, respectively. The distribution of the aphids could be connected with Gondwanaland, and thus the aphidiids possibly provide further evidence of continental drift and for the former existence of such a continent.

Etiology of Acute Diarrhea among United States Military Personnel Deployed to South America and West Africa

1993 ◽  
Vol 48 (2) ◽  
pp. 243-248 ◽  
Author(s):  
August L. Bourgeois ◽  
Neil R. Blacklow ◽  
Peter Echeverria ◽  
Joel Escamilla ◽  
Donald H. Burr ◽  
...  
Keyword(s):  
United States ◽  
South America ◽  
West Africa ◽  
Military Personnel ◽  
Acute Diarrhea ◽  
United States Military

Late Cenomanian–Turonian (Cretaceous) ammonites from Wadi Qena, central Eastern Desert, Egypt: taxonomy, biostratigraphy and palaeobiogeographic implications

2012 ◽  
Vol 62 (1) ◽  
pp. 63-89 ◽  
Author(s):  
Emad Nagm ◽  
Markus Wilmsen
Keyword(s):  
West Africa ◽  
Late Cretaceous ◽  
Upper Cretaceous ◽  
Eastern Desert ◽  
Lower Upper ◽  
Central Eastern Desert ◽  
Wadi Qena ◽  
Central Eastern ◽  
First Time

ABSTRACT Nagm, E. and Wilmsen, M. 2012. Late Cenomanian-Turonian (Cretaceous) ammonites from Wadi Qena, central Eastern Desert, Egypt: taxonomy, biostratigraphy and palaeobiogeographic implications. Acta Geologica Polonica, 62 (1), 63-89. Warszawa. In Egypt, marine Upper Cenomanian-Turonian strata are well exposed in the Eastern Desert. The southernmost outcrops are located in the central part of Wadi Qena, where the lower Upper Cretaceous is represented by the fossiliferous Galala and Umm Omeiyid formations. From these strata, numerous ammonites have been collected bed-by-bed and 13 taxa have been identified, which are systematically described herein. Four of them (Euomphalocerascostatum, Vascoceras globosum globosum, Thomasites gongilensis and Pseudotissotia nigeriensis) are recorded from Egypt for the first time. The ammonite ranges are used for a biostratigraphic zonation of the lower Upper Cretaceous succession in the northern and central part of Wadi Qena: the Upper Cenomanian-Lower Turonian has been subdivided into five biozones (including a new upper Lower Turonian biozone based on the occurrence of Pseudotissotia nigeriensis), and one biozone has been recognized in the Upper Turonian. Palaeobiogeographically, the ammonite assemblage has a Tethyan character. During the Early Turonian, influences of the Vascoceratid Province were predominant with strong affinities to typical Nigerian faunas. This shows the significance of faunal exchange between Egypt and Central and West Africa via the Trans-Saharan Seaway. Compared to contemporaneous ammonoid faunas from the northern part of the Eastern Desert, Boreal influences are much less obvious in Wadi Qena. Thus, the present study greatly enhances the knowledge of the Late Cretaceous palaeobiogeography and biostratigraphy of Egypt and adjacent areas.

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