Departamento de Geologia e Recursos Naturais
Taubaracna maculosa: First fossil spider from paleogene in South America
Spiders (Order Araneae) can be found in all continents, except Antarctica. This order has a long evolutionary history that began during the Paleozoic Era. Despite this prolonged span and the diversity of extant species, the fossil record of spiders is relatively modest, with most specimens preserved in amber and found in the Northern Hemisphere. Taubaracna maculosa nov. gen.
Técnica de laboratório desenvolve método para classificação de meteoritos metálicos
Publicado originalmente no Jornal da Unicamp.
The absence of an invasive air sac system in the earliest dinosaurs suggests multiple origins of vertebral pneumaticity
The origin of the air sac system present in birds has been an enigma for decades. Skeletal pneumaticity related to an air sac system is present in both derived non-avian dinosaurs and pterosaurs. But the question remained open whether this was a shared trait present in the common avemetatarsalian ancestor. We analyzed three taxa from the Late Triassic of South Brazil, which are some of the oldest representatives of this clade (233.23 ± 0.73 Ma), including two sauropodomorphs and one herrerasaurid.
The profile of palaeontology teaching in undergraduate courses in Brazil
Background: Currently, palaeontology professors have been challenged to update and incorporate innovative teaching approaches into their planning to help students develop the necessary skills and competencies.
Use of low-cost accelerometers for landslides monitoring: results from a flume experiment
Early Warning Systems (EWS) are non-structural measures for landslides disaster prevention. They are based on the detection of impending failure signals. The results of a landslide simulation experiment where accelerometers were used to identify pre-failure signals are presented in this paper. Landslide was simulated in a tilting flume filled with sandy soil. During the experiment, the flume was fixed at 30° inclination and water percolated through the soil until it slid.
Within-plate magmatism in the southern Borborema Province (NE Brazil): Mantle plumes associated with the Nuna-Columbia and Rodinia breakup?
Formation and fragmentation of landmasses, such as the Nuna/Columbia and Rodinia supercontinents, are influenced by mantle plume activity during rifting and breakup. In the Borborema Province, NE Brazil, within-plate magmatism at ca. 1.6 and at ca. 0.8 Ga is evidenced by the formation of mafic-ultramafic volcanic and plutonic rocks, mafic-ultramafic layered intrusions, and A-type granite intrusions.