Abstract The spider crabs Willinachoides santanai n. gen. sp. from the early-middle Miocene of north Brazil and Paradasygyius rodriguezi late Venezuela are described illustrated. Additionally, Eoinachoides senni Van Straelen, 1933, Oligocene–early Venezuela, is redescribed based on photographs holotype, diagnosis latispinosus Carriol, Muizon, Secretan, 1987, Peru, emended also basis holotype. p...

Abstract Hypogene mineralization in porphyry Cu deposits is typically associated with crustal thickening and rapid exhumation, whereas supergene enrichment requires slow exhumation to allow sufficient time for leaching downward transport of before it lost surface erosion. Therefore, spatial temporal patterns within a metallogenic belt can highlight favorable locations hypogene mineralization, e...

A new burmagomphid anisopteran, Satelitala soberana gen. et sp. nov. is described from the lower Eocene of Laguna del Hunco, Patagonia, Argentina. The new genus is characterised by hindwing characters such as the subdiscoidal triangle not elongated; anal loop divided longitudinally; paranal cell divided longitudinally; five terminal cells between RP and MA; five terminal cells between MP and Cu...

A new fossil genus and species of fairyfly, Eotriadomeroides abjunctus Huber & Greenwalt, gen. sp. nov. (Hymenoptera: Chalcidoidea: Mymaridae), is described illustrated from a female preserved as compression in middle Eocene shale the Kishenehn Formation, Montana, USA. It compared to extant Neotriadomerus Huber, known only Australia, Triadomerus Yoshimoto, Cretaceous amber Canada. suggested...

An upper Campanian to Oligocene stratigraphic succession has been examined from six deep exploration wells in the Palmyrides area of Syria. Most sedimentary contains rich and well moderately preserved planktonic foraminiferal assemblages that enable successful age determination. The Maastrichtian fauna is highly diverse with domination warm water taxa such as Globotruncana aegyptiaca, Gansserin...

The GAARlandia hypothesis has produced vigorous debate among biologists regarding whether now-submerged landforms that existed in the Caribbean region during late Paleogene might have acted as a barrier for marine organisms and bridge terrestrial biotas migrating from South America into Greater Antilles. This concept derived hypothesized emergence history of Aves Ridge. In quarter century since...