Consulta: creatorFacets:"AVILLA,LEONARDO S."
Registros recuperados: 6
Data/hora: 06/06/2024 14:11:36

Gondwana biogeography: a phylogenetic approach
Provedor de dados: 42
Autores: AVILLA,LEONARDO S.; CANDEIRO,CARLOS R.A.; BUCKUP,PAULO A.; BERGQVIST,LÍLIAN P.
Tipo: Info:eu-repo/semantics/other
Ano: 2002
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652002000200018

Late Pleistocene echimyid rodents (Rodentia, Hystricognathi) from northern Brazil
Provedor de dados: 42
Autores: FERREIRA,THAIS M.F.; OLIVARES,ADRIANA ITATI; KERBER,LEONARDO; DUTRA,RODRIGO P.; AVILLA,LEONARDO S.
ABSTRACT Echimyidae (spiny rats, tree rats and the coypu) is the most diverse family of extant South American hystricognath rodents (caviomorphs). Today, they live in tropical forests (Amazonian, coastal and Andean forests), occasionally in more open xeric habitats in the Cerrado and Caatinga of northern South America, and open areas across the southern portion of the continent (Myocastor). The Quaternary fossil record of this family remains poorly studied. Here, we describe the fossil echimyids found in karst deposits from southern Tocantins, northern Brazil. The analyzed specimens are assigned to Thrichomys sp., Makalata cf. didelphoides and Proechimys sp. This is the first time that a fossil of Makalata is reported. The Pleistocene record of echimyids...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Caviomorphs; Echimyidae; Fossil record; Quaternary; South America.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652016000300829

Distributional patterns of herbivore megamammals during the Late Pleistocene of South America
Provedor de dados: 42
Autores: GALLO,VALERIA; AVILLA,LEONARDO S.; PEREIRA,RODRIGO C.L.; ABSOLON,BRUNO A.
The geographic distribution of 27 species of the South American megafauna of herbivore mammals during the Late Pleistocene was analyzed in order to identify their distributional patterns. The distribution of the species was studied using the panbiogeographical method of track analysis. Six generalized tracks (GTs) and two biogeographic nodes were obtained. The GTs did not completely superpose with the areas of open savanna present in Pleistocene, nor with the biotic tracks of some arthropods typical of arid climate, indicating that these animals avoided arid environment. Overall, the GTs coincided with some biogeographic provinces defined on the basis of living taxa, indicating that certain current distributional patterns already existed in Pleistocene....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Distributional patterns; Historical Biogeography; Panbiogeography; Megafauna; Late Pleistocene; South America.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000200533

A new Mammutidae (Proboscidea, Mammalia) from the Late Miocene of Gansu Province, China
Provedor de dados: 42
Autores: MOTHÉ,DIMILA; AVILLA,LEONARDO S.; ZHAO,DESI; XIE,GUANGPU; SUN,BOYANG.
ABSTRACT The "Yanghecun specimen", a proboscidean specimen represented by a mandible from Miocene of China and previously described as Gomphotheriidae, is here reviewed and described as a new genus and species of Mammutidae: Sinomammut tobieni. This taxon is a longirostrine mastodon, lacking lower tusks, and bearing a wide last molar with oblique and non-inflated lophids, broad transverse interlophids, and yoke-like wear figures. Phylogenetic analysis of Mammutidae based on dental and mandibular features recovered S. tobieni as sister group of the mastodon Mammut. The longirostrine condition and the well-developed lower incisors seem to be primitive for Mammutidae, while the brevirostry is the derived condition, probably emerged during the middle Miocene...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Evolution; Longirostrine symphysis; Mammutidae; Miocene; Proboscidea.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652016000100065

Late Pleistocene carnivores (Carnivora: Mammalia) from a cave sedimentary deposit in northern Brazil
Provedor de dados: 42
Autores: RODRIGUES,SHIRLLEY; AVILLA,LEONARDO S.; SOIBELZON,LEOPOLDO H.; BERNARDES,CAMILA.
The Brazilian Quaternary terrestrial Carnivora are represented by the following families: Canidae, Felidae, Ursidae, Procyonidae Mephitidae and Mustelidae. Their recent evolutionary history in South America is associated with the uplift of the Panamanian Isthmus, and which enabled the Great American Biotic Interchange (GABI). Here we present new fossil records of Carnivora found in a cave in Aurora do Tocantins, Tocantins, northern Brazil. A stratigraphical controlled collection in the sedimentary deposit of the studied cave revealed a fossiliferous level where the following Carnivora taxa were present: Panthera onca, Leopardus sp., Galictis cuja, Procyon cancrivorus, Nasua nasua and Arctotherium wingei. Dating by Electron Spinning Resonance indicates that...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Carnivora; Fossil record; Pleistocene; South America.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652014000401641

Dinosaur osteoderms from the Adamantina Formation, upper Cretaceous of São Paulo State, Brazil
Provedor de dados: 42
Autores: TORRES,SANDRA R.; AVILLA,LEONARDO S.; ABRANTES,ÉRIKA A.L.; BERGQVIST,LÍLIAN P.
Tipo: Info:eu-repo/semantics/other
Ano: 2002
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652002000200021