scholarly journals Mesozoic dinosaurs from Brazil and their biogeographic implications

2011 ◽  
Vol 83 (1) ◽  
pp. 23-60 ◽  
Author(s):  
Jonathas S. Bittencourt ◽  
Max C. Langer
Keyword(s):  
North Africa ◽  
Rio Grande ◽  
Species Level ◽  
Northeastern Brazil ◽  
Late Triassic ◽  
Close Correspondence ◽  
Rio Grande Do Sul ◽  
Central Brazil ◽  
South Central ◽  
Nomina Dubia

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.

scholarly journals Feather mites (Acari, Astigmata) associated with birds in an Atlantic Forest fragment in Northeastern Brazil

2015 ◽  
Vol 75 (3) ◽  
pp. 726-735 ◽  
Author(s):  
HM Silva ◽  
FA Hernandes ◽  
M Pichorim
Keyword(s):  
Atlantic Forest ◽  
Bird Species ◽  
Rio Grande ◽  
Neotropical Region ◽  
Species Level ◽  
Northeastern Brazil ◽  
Forest Fragment ◽  
Visual Examination ◽  
Feather Mites ◽  
First Time

AbstractThe present study reports associations between feather mites (Astigmata) and birds in an Atlantic Forest fragment in Rio Grande do Norte state, in Brazil. In the laboratory, mites were collected through visual examination of freshly killed birds. Overall, 172 individuals from 38 bird species were examined, between October 2011 and July 2012. The prevalence of feather mites was 80.8%, corresponding to 139 infested individuals distributed into 30 species and 15 families of hosts. Fifteen feather mite taxa could be identified to the species level, sixteen to the genus level and three to the subfamily level, distributed into the families Analgidae, Proctophyllodidae, Psoroptoididae, Pteronyssidae, Xolalgidae, Trouessartiidae, Falculiferidae and Gabuciniidae. Hitherto unknown associations between feather mites and birds were recorded for eleven taxa identified to the species level, and nine taxa were recorded for the first time in Brazil. The number of new geographic records, as well as the hitherto unknown mite-host associations, supports the high estimates of diversity for feather mites of Brazil and show the need for research to increase knowledge of plumicole mites in the Neotropical region.

scholarly journals On the fossil Remains of Panochthus Burmeister, 1866 (Xenarthra, Cingulata, Glyptodontidae) from the Pleistocene of southern Brazil

2015 ◽  
Vol 87 (1) ◽  
pp. 15-27 ◽  
Author(s):  
José D. Ferreira ◽  
Martín Zamorano ◽  
Ana Maria Ribeiro
Keyword(s):  
South America ◽  
Rio Grande ◽  
Species Level ◽  
External Morphology ◽  
Latitudinal Distribution ◽  
Southern Brazil ◽  
Rio Grande Do Sul ◽  
Diagnostic Features ◽  
New Material

The genus Panochthus represents the last lineage of "Panochthini" recorded in the Pleistocene. This genus has a wide latitudinal distribution in South America, and in Brazil it occurs in the southern and northeastern regions. In this paper we describe new material (isolated osteoderms and caudal tube fragments) assigned to Panochthus from the state of Rio Grande do Sul (southern Brazil) and discuss some taxonomic issues related to Panochthus tuberculatus and Panochthus greslebini based on this material . The occurrence of P. greslebini is the first for outside the Brazilian Intertropical Region. In addition, we describe new diagnostic features to differentiate the osteoderms of P. greslebini and P. tuberculatus. Unfortunately, it was not possible to identify some osteoderms at the species level. Interestingly, they showed four distinct morphotypes characterized by their external morphology, and thus were attributed to Panochthus sp. Lastly, we conclude that in addition to P.tuberculatus registered to southern Brazil, there is another species of the genus, assignable to P. cf. P. greslebini. Our analysis reinforce the reliability of caudal tube characters for the classification of species of Panochthus.

scholarly journals The Faxinal do Soturno local fauna, Late Triassic of Rio Grande do Sul, Brazil

2010 ◽  
Vol 13 (3) ◽  
pp. 233-246 ◽  
Author(s):  
Jose Bonaparte ◽  
Cesar Schultz ◽  
Marina Soares ◽  
Agustín Martinelli
Keyword(s):  
Rio Grande ◽  
Late Triassic ◽  
Rio Grande Do Sul ◽  
Local Fauna

Maruina Müller, 1895 (Diptera: Psychodidae): description of four new species from Brazil, with revised diagnoses for the genus and subgenera

Zootaxa ◽  
2019 ◽  
Vol 4652 (2) ◽  
pp. 296-316 ◽  
Author(s):  
JÉSSICA LUNA CAMICO ◽  
DANILO PACHECO CORDEIRO ◽  
CÍNTHIA CHAGAS
Keyword(s):  
New Species ◽  
Atlantic Forest ◽  
Rio Grande ◽  
Neotropical Region ◽  
Western Hemisphere ◽  
Flowing Water ◽  
Rio Grande Do Sul ◽  
Type Specimens ◽  
Distribution Maps ◽  
Nomina Dubia

Maruina is an aquatic genus of Psychodidae with larvae and pupae adapted for life in flowing water. The genus is restricted to the Western Hemisphere, with the majority of species distributed in the Neotropical region. 39 Maruina species are described, with 11 currently known to occur in Brazil, all recorded from the eastern Biomes of Atlantic forest and Caatinga. Here we describe four new Maruina species collected from Brazil: Maruina (Aculcina) roraimensis sp. nov., Maruina (Maruina) kallyntrona sp. nov. and M. (M.) mystax sp. nov. constitute the first report of Maruina from Amazonia and M. (A.) pila sp. nov. from the southern portion of the Atlantic forest expands the distribution of the genus to Rio Grande do Sul, the southernmost state of Brazil. Type specimens of some described species were also studied. Redescriptions are completed for M. (M.) garota and M. (M.) namorada, and additional characters and figures are presented for M. (A.) duckhousei, M. (M.) barrettoi and M. (M.) jezeki. M. pilosella and M. spinosa are considered nomina dubia. Diagnostic characters for the genus and both subgenera are revised and distribution maps for Maruina species recorded in Brazil are provided. 

The Late Triassic dinosauromorphSacisaurus agudoensis(Caturrita Formation; Rio Grande do Sul, Brazil): anatomy and affinities

2013 ◽  
Vol 379 (1) ◽  
pp. 353-392 ◽  
Author(s):  
Max C. Langer ◽  
Jorge Ferigolo
Keyword(s):  
Rio Grande ◽  
Late Triassic ◽  
Rio Grande Do Sul

Vertebrate dinoturbation from the Caturrita Formation (Late Triassic, Paraná Basin), Rio Grande do Sul State, Brazil

2007 ◽  
Vol 11 (3) ◽  
pp. 303-310 ◽  
Author(s):  
Rafael Costa Da Silva ◽  
Ismar De Souza Carvalho ◽  
Cibele Schwanke
Keyword(s):  
Rio Grande ◽  
Late Triassic ◽  
Rio Grande Do Sul ◽  
Paraná Basin ◽  
Parana Basin

scholarly journals A Primitive Late Triassic 'ictidosaur' from Rio Grande Do Sul, Brazil

Palaeontology ◽  
2001 ◽  
Vol 44 (4) ◽  
pp. 623-635 ◽  
Author(s):  
Jose F. Bonaparte ◽  
Jorge Ferigolo ◽  
Ana maria Ribeiro
Keyword(s):  
Rio Grande ◽  
Late Triassic ◽  
Rio Grande Do Sul

scholarly journals Distribution extension of the Yellow Anaconda Eunectes notaeus Cope, 1862 (Squamata: Boidae) in the state of Rio Grande do Sul, Brazil

Check List ◽  
2013 ◽  
Vol 9 (3) ◽  
pp. 660 ◽  
Author(s):  
Guilherme S. Santos ◽  
Thales de Lema ◽  
Gisele R. Winck ◽  
Sonia Z. Cechin ◽  
Ruben A. Boelter
Keyword(s):  
Rio Grande ◽  
The State ◽  
Southern Brazil ◽  
Rio Grande Do Sul ◽  
Central Brazil ◽  
River Floods ◽  
Established Population

The yellow anaconda, Eunectes notaeus, was until recently considered as a species with accidental occurrence on southern Brazil, due to river floods from the Pantanal region on central Brazil. Here we provide monitoring records of a well-established population in the state of Rio Grande do Sul, and also discuss its distribution in the area.

scholarly journals A reassessment of the basal dinosaur Guaibasaurus candelariensis, from the Late Triassic Caturrita Formation of south Brazil

2010 ◽  
Vol 101 (3-4) ◽  
pp. 301-332 ◽  
Author(s):  
Max C. Langer ◽  
Jonathas S. Bittencourt ◽  
Cesar L. Schultz
Keyword(s):  
Rio Grande ◽  
Late Triassic ◽  
Unique Combination ◽  
Rio Grande Do Sul ◽  
Weak Support ◽  
Type Series ◽  
Phylogenetic Studies ◽  
Continuous Radiation ◽  
Santa Maria ◽  
South Brazil

ABSTRACTThe dinosaur record of the Santa Maria beds of Rio Grande do Sul (Mid–Late Triassic; south Brazil) includes the herrerasaur Staurikosaurus pricei, and two basal members of the sauropodomorph lineage: Saturnalia tupiniquim and Unaysaurus tolentinoi. The most enigmatic of the saurischian taxa is, however, Guaibasaurus candelariensis, previously regarded as either a basal theropod or a basal sauropodomorph. This study provides a detailed anatomical revision of all specimens originally referred to G. candelariensis by Bonaparte and co-authors, including its type-series and a more recently excavated partial postcranium. Although coming from different sites, these specimens share a unique combination of traits, and at least one possible autapomorphic feature of the pelvis, which support the inclusivity and uniqueness of the species. G. candelariensis was a medium-sized (nearly 2 m long) biped with an intriguing mix of plesiomorphic and derived (eusaurischian/theropod) features. Phylogenetic studies reveal weak support for the nesting of G. candelariensis within Theropoda, but this affinity is bolstered by various traits it shares with neotheropods. The Norian age of G. candelariensis corroborates previous studies that suggest the continuous radiation of more basal dinosauromorphs until the end of the Triassic, after the appearance of the three main dinosaur clades.

On the taxonomic status of the genus Horvathinia Montandon (Hemiptera: Belostomatidae)

Zootaxa ◽  
2005 ◽  
Vol 1016 (1) ◽  
pp. 21 ◽  
Author(s):  
JUAN A. SCHNACK ◽  
ANA L. ESTÉVEZ
Keyword(s):  
Morphological Variation ◽  
Taxonomic Status ◽  
Rio Grande ◽  
Species Level ◽  
South American ◽  
Rio Grande Do Sul ◽  
Diagnostic Species

Nine species of Horvathinia have been described since Montandon (1911) described H. pelocoroides, a description based upon two specimens. Subsequent descriptions, of H. argemii Schnack, H. bollei De Carlo, H. castilloi De Carlo, H. doellojuradoi De Carlo, H. forsteri Lauck, H. lenti De Carlo, H. meyeri De Carlo, H. pelleranoi De Carlo, and H. schubarti De Carlo, were based on only one specimen, each all captured while flying at lights. In February 1981, 55 specimens of Horvathinia were collected flying at light in Torres, Rio Grande do Sul, Brazil. The morphological variation of these specimens is similar to that diagnostic species-level characters in describing Horvathinia species. Therefore, we consider that the southern South American genus Horvathinia is monotypic. However, as far as the type of H.lenti could not be examined, we therefore synonymize all species described after 1911 with H. pelocoroides, except for H. lenti. We also redescribe H. pelocoroides Montandon.

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