Phylogenetic relationships of the Bauru Group turtles (late Cretaceous of south-central Brazil)

2006 ◽  
Vol 9 (3) ◽  
pp. 365-373 ◽  
Author(s):  
Marco França
2021 ◽  
Vol 24 (4) ◽  
pp. 387-396
Author(s):  
Carlos Roberto Candeiro ◽  
Stephen Brusatte ◽  
Glayce Queiroz ◽  
Adelino Carvalho ◽  
Débora Maia ◽  
...  

The southern Goiás state region of Central Brazil has an extensive and informative record of fossil biota. Particularly over the last five years, there has been a great increase in fossil finds, which has enabled a greater understanding of this region's fauna and flora during the Late Cretaceous. In this article, we provide an updated synthesis of the biota from the Cretaceous of the southern Goiás state, the record of plants, gastropods, turtles, crocodilians, titanosaurs, and theropod dinosaurs.


Plant Disease ◽  
2003 ◽  
Vol 87 (11) ◽  
pp. 1322-1328 ◽  
Author(s):  
Elizabeth Alvarez ◽  
Juan Fernando Mejia ◽  
Teresa L. Valle

Isolates of Sphaceloma manihoticola, the asexual stage of Elsinoe brasiliensis, were collected from several regions of south-central Brazil. The isolates were obtained from samples of leaves, stems, and petioles of cassava (Manihot esculenta) and the weedy Euphorbia heterophylla (“amendoim bravo”) by directly plating infected tissue onto acidified potato dextrose agar. For pathogenicity studies, 19 isolates were inoculated onto each of two cassava cultivars, MBRA 703 as a susceptible cultivar and MBRA 12 as a resistant cultivar to S. manihoticola. MBRA 703, with the greatest pathogenicity to 58% (11) of the isolates, showed an intermediate pathogenic reaction to 16% (3) of the isolates, and was less pathogenic to 26% (5) of the isolates. MBRA 12, with a less pathogenic reaction to 63% (12) of the isolates, showed an intermediate pathogenic reaction to 16% (3) of the isolates, and was highly pathogenic to 21% (4) of the isolates. The isolates were verified as belonging to the genus Sphaceloma based on their morphological characteristics, including conidia and hyphae of monoconidial isolate. Conidia of isolates were small, thin-walled, ellipsoid to (rarely) globose, commonly with one or two gut-tules. Conidiophores were phialides, hyaline to slightly pigmented 0-to-1 septate; conidiophores from the weedy specie were phialides, hyaline to brown 0-to-2 septate producing hyaline conidia. The isolates also were verified as belonging to the genus Sphaceloma by using a poly-merase chain reaction (PCR) assay, which detected a 645-bp band in all isolates except two (1 and 6) for which the PCR product had 600 bp. Digestion of the amplified product with the enzymes MspI and CfoI allowed differences to be detected in restriction patterns among isolates. A homogeneous banding pattern was obtained for 17 of the isolates but a different restriction pattern was obtained for isolates 1 and 6 of E. heterophylla. This suggests the possibility of another species within this group of isolates. The results indicate the presence of pathogenic variation among isolates of the fungus and an isolate-host interaction, because statistically significant differences were observed between the two cassava cultivars in response to inoculation with the isolates of S. manihoticola.


2011 ◽  
Vol 83 (1) ◽  
pp. 23-60 ◽  
Author(s):  
Jonathas S. Bittencourt ◽  
Max C. Langer

The record of dinosaur body-fossils in the Brazilian Mesozoic is restricted to the Triassic of Rio Grande do Sul and Cretaceous of various parts of the country. This includes 21 named species, two of which were regarded as nomina dubia, and 19 consensually assigned to Dinosauria. Additional eight supraspecific taxa have been identified based on fragmentary specimens and numerous dinosaur footprints known in Brazil. In fact, most Brazilian specimens related to dinosaurs are composed of isolated teeth and vertebrae. Despite the increase of fieldwork during the last decade, there are still no dinosaur body-fossils of Jurassic age and the evidence of ornithischians in Brazil is very limited. Dinosaur faunas from this country are generally correlated with those from other parts of Gondwana throughout the Mesozoic. During the Late Triassic, there is a close correspondence to Argentina and other south-Pangaea areas. Mid-Cretaceous faunas of northeastern Brazil resemble those of coeval deposits of North Africa and Argentina. Southern hemisphere spinosaurids are restricted to Africa and Brazil, whereas abelisaurids are still unknown in the Early Cretaceous of the latter. Late Cretaceous dinosaur assemblages of south-central Brazil are endemic only to genus or, more conspicuously, to species level, sharing closely related taxa with Argentina, Madagascar, Indo-Pakistan and, to a lesser degree, continental Africa.


Author(s):  
Ieda C. Mendes ◽  
◽  
Cássio A. Tormena ◽  
Maurício R. Cherubin ◽  
Douglas L. Karlen ◽  
...  

2018 ◽  
Vol 179 (2) ◽  
pp. 136-150 ◽  
Author(s):  
Emilio Estrada-Ruiz ◽  
Elisabeth A. Wheeler ◽  
Garland R. Upchurch ◽  
Greg H. Mack

Zootaxa ◽  
2012 ◽  
Vol 3315 (1) ◽  
pp. 1 ◽  
Author(s):  
FERNANDO LOBO ◽  
CRISTIAN ABDALA ◽  
SOLEDAD VALDECANTOS

With 36 species and at least nine potentially independent lineages (not formally described yet) occurring mostly in theAndes and adjacent Patagonia and Puna plateau areas, Phymaturus lizards represent one of the most endemic vertebrategroups of the arid southwestern region of South America. Phylogenetic relationships among species of Phymaturus areinferred using mainly a morphological data set of 206 characters. Also available sequences of mitochondrial DNA for sev-en terminals were added for a total evidence analysis. Most information is included in the discrete characters block; mostcharacters involve color pattern, osteology and squamation. Continuous characters were taken from body proportions,squamation and skeletons. Among morphological data, binary polymorphic characters were analyzed applying the scaledcoding criteria. Continuous characters were entered in the analysis using standardized ranges, a method that allows a sim-ple optimization to estimate distances/costs avoiding the arbitrary coding as discrete characters. For our parsimony anal-yses we chose the implied weights method, which underweights homoplastic characters. Several runs were madeanalyzing all the information combined and also separating morphological from molecular datasets. Binary polymor-phisms were also analyzed as missing data. All characters affected by sexual dimorphism were analyzed separating thesexes; female information was more congruent with the total evidence analysis. Characters involving continuous and poly-morphic information are relevant for searching and building phylogenetic hypotheses in Phymaturus. There exists signif-icant congruence between the molecular information analyzed in this study and previous published analyses. Within bothmain clades of Phymaturus, northern subgroups are those more recently originated during the genus diversification. Spe-cies belonging to the puna subclade of the palluma group are arranged in two natural groups, one distributed in the north(Catamarca and La Rioja provinces), and the other in the south, La Rioja and San Juan provinces. Within the patagonicusgroup, the majority of the species are arranged in a south-central Chubut clade, eastern-central Chubut clade, central Rio Negro clade and a Payunia clade.


2020 ◽  
Vol 106 ◽  
pp. 104259
Author(s):  
Galuber Oliveira Cunha ◽  
Rodrigo Miloni Santucci ◽  
Marco Brandalise de Andrade ◽  
Carlos Eduardo Maia de Oliveira

2012 ◽  
Vol 4 (10) ◽  
pp. 3201-3214 ◽  
Author(s):  
Marcos Adami ◽  
Marcio Pupin Mello ◽  
Daniel Alves Aguiar ◽  
Bernardo Friedrich Theodor Rudorff ◽  
Arley Ferreira de Souza

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