scholarly journals South America: an Economic and Regional Geography; with an Historical Chapter

Nature ◽  
1927 ◽  
Vol 120 (3025) ◽  
pp. 580-580
Keyword(s):  
South America ◽  
Regional Geography

South America: An Economic and Regional Geography, with an Historical Chapter

1927 ◽  
Vol 70 (1) ◽  
pp. 80
Author(s):  
H. A. M. ◽  
E. W. Shanahan
Keyword(s):  
South America ◽  
Regional Geography

scholarly journals A Middle Jurassic abelisaurid from Patagonia and the early diversification of theropod dinosaurs

2012 ◽  
Vol 279 (1741) ◽  
pp. 3170-3175 ◽  
Author(s):  
Diego Pol ◽  
Oliver W. M. Rauhut
Keyword(s):  
South America ◽  
Northern Hemisphere ◽  
Early Cretaceous ◽  
Middle Jurassic ◽  
Evolutionary History ◽  
Regional Geography ◽  
Distinctive Features ◽  
Theropod Dinosaurs ◽  
Early Diversification ◽  
History Of

Abelisaurids are a clade of large, bizarre predatory dinosaurs, most notable for their high, short skulls and extremely reduced forelimbs. They were common in Gondwana during the Cretaceous, but exceedingly rare in the Northern Hemisphere. The oldest definitive abelisaurids so far come from the late Early Cretaceous of South America and Africa, and the early evolutionary history of the clade is still poorly known. Here, we report a new abelisaurid from the Middle Jurassic of Patagonia, Eoabelisaurus mefi gen. et sp. nov., which predates the so far oldest known secure member of this lineage by more than 40 Myr. The almost complete skeleton reveals the earliest evolutionary stages of the distinctive features of abelisaurids, such as the modification of the forelimb, which started with a reduction of the distal elements. The find underlines the explosive radiation of theropod dinosaurs in the Middle Jurassic and indicates an unexpected diversity of ceratosaurs at that time. The apparent endemism of abelisauroids to southern Gondwana during Pangean times might be due to the presence of a large, central Gondwanan desert. This indicates that, apart from continent-scale geography, aspects such as regional geography and climate are important to reconstruct the biogeographical history of Mesozoic vertebrates.

Animal taxa named for Rollo H. Beck

2014 ◽  
Vol 41 (1) ◽  
pp. 113-123 ◽  
Author(s):  
Gary M. Fellers
Keyword(s):  
Natural History ◽  
South America ◽  
Southern California ◽  
American Museum ◽  
Type Specimens ◽  
California Academy ◽  
Vertebrate Zoology ◽  
The Caribbean ◽  
Set Up ◽  
Academy Of Sciences

Rollo Howard Beck (1870–1950) was a professional bird collector who spent most of his career on expeditions to the Channel Islands off southern California, the Galápagos Islands, South America, the South Pacific, and the Caribbean. Some of the expeditions lasted as long as ten years during which time he and his wife, Ida, were often working in primitive conditions on sailing vessels or camps set up on shore. Throughout these expeditions, Beck collected specimens for the California Academy of Sciences, the Museum of Vertebrate Zoology at Berkeley (California), the American Museum of Natural History, and the Walter Rothschild Museum at Tring, England. Beck was one of the premier collectors of his time and his contributions were recognized by having 17 taxa named becki in his honor. Of these taxa, Beck collected 15 of the type specimens.

Charles Waterton (1782–1865) and wourali

2017 ◽  
Vol 44 (1) ◽  
pp. 122-129 ◽  
Author(s):  
A. Padfield
Keyword(s):  
South America ◽  
British Guiana ◽  
History Of

Charles Waterton was the eccentric “Lord of Walton Hall” near Wakefield in Yorkshire. His Wanderings in South America was first published in 1826; translated into French, German and Spanish, it was a best seller. He brought back wourali used by the Macoushi natives of British Guiana (now Guyana) for killing prey; there is a piece of it in the Wakefield Museum. This paper traces the history of wourali which paralyses its victims; its attempted medical use for rabies and tetanus and, though different from curare, its belated use in modern anaesthesia.

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