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Alexei B. Herman and Ksenia V. Domogatskaya
Three species belonging to the fern genus Ochotopteris E. Lebedev, including the new species O. lebedevii Herman et Domogatskaya, are revised, described and illustrated in this paper. The fossils come from Albian, Cenomanian, Turonian and Coniacian beds ...
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Gabriel Andrés Casal,Patricia Vallati,Lucio Manuel Ibiricu,Andrea De Sosa Tomas,Nicolás Foix,José Óscar Alllard,Rubén Darío Martínez
Pág. 162 - 178
The presence of stromatolites from Cretaceous outcrops at the headwaters of the río Chico locality in the Golfo San Jorge Basin is reported for the first time. They are present in the uppermost part of the Lago Colhué Huapi Formation (Coniacian-Maastrich...
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Elena Previtera
Pág. 345 - 367
The uppermost Cretaceous continental deposits of the Neuquén Basin (west-central Argentina) have yielded a high diversity vertebrate assemblage, including numerous dinosaur species. The Neuquén Group is the richest unit in remains of dinosaur of the basi...
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Markus J. Loegering and Alexei V. Milkov
Although the first petroleum fields in the Mozambique basin were discovered more than 60 years ago, the composition and origin of petroleum fluids in this basin are largely unknown. We studied the geochemical composition of petroleum gases and liquids fr...
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Rodrigo A. Otero,Sergio Soto-Acuña,Christian Salazar S.,José Luis Oyarzún
Pág. 237 - 267
Several Upper Cretaceous plesiosaur specimens recovered from southernmost Chile are described here. These were collected from upper levels of the Dorotea Formation exposed on three different localities (Sierra Baguales, Cerro Castillo, and Dumestre). The...
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Leonardo Salgado,Rodolfo A. Coria,Andrea B. Arcucci,Luis M. Chiappe
Pág. 67 - 80
We present new remains from the Cam-panian-Maastrichtian beds of the Alien Formation, in Salitral Ojo de Agua (Río Negro, Argentina), which are assignable to Alvarezsauridae indet. This clade of small coelurosaurian theropods is known from strata of simi...
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