Osteohistology of the silesaurid Sacisaurus agudoensis from southern Brazil (Late Triassic) and implications for growth in early dinosaurs.

Abstract:

:The non-dinosaurian dinosauriform silesaurids are the closest relatives of crown-group dinosaurs and are thus, important for understanding the origins of that group. Here, we describe the limb bone histology of the Late Triassic silesaurid Sacisaurus agudoensis from the Candelária Sequence of the Santa Maria Supersequence, Rio Grande do Sul state, Brazil. The sampled bones comprise eight femora and one fibula from different individuals. The microscopic analysis of all elements reveals uninterrupted fibrolamellar bone tissue indicating rapid growth. A transition to slower growing peripheral parallel-fibered bone tissue in some individuals indicates a decrease in growth rate, suggesting ontogenetic variation within the sample. The osteohistology of Sacisaurus agudoensis is similar to that of other silesaurids and supports previous hypotheses that rapid growth was attained early in the dinosauromorph lineage. However, silesaurids lack the complex vascular arrangements seen in saurischian dinosaurs. Instead, they exhibit predominantly longitudinally-oriented primary osteons with few or no anastomoses, similar to those of some small early ornithischian dinosaurs. This simpler vascular pattern is common to all silesaurids studied to date and indicates relatively slower growth rates compared to most Dinosauria.

journal_name

An Acad Bras Cienc

authors

Veiga FH,Botha-Brink J,Ribeiro AM,Ferigolo J,Soares MB

doi

10.1590/0001-3765201920180643

subject

Has Abstract

pub_date

2019-06-19 00:00:00

pages

e20180643

issue

suppl 2

eissn

0001-3765

issn

1678-2690

pii

S0001-37652019000400512

journal_volume

91

pub_type

杂志文章
  • Effect of thermo-coupled processes on the behaviour of a clay barrier submitted to heating and hydration.

    abstract::The storage of high level radioactive waste is still an unresolved problem of the nuclear industry, being geological disposal the most favoured option and, naturally, the one requiring the strongest geo-mechanical input. Most conceptual designs for the deep geological disposal of nuclear waste envisage placing the can...

    journal_title:Anais da Academia Brasileira de Ciencias

    pub_type: 杂志文章

    doi:10.1590/s0001-37652010000100013

    authors: Sánchez M,Gens A,Olivella S

    更新日期:2010-03-01 00:00:00

  • Screening for CLCN5 mutation in renal calcium stone formers patients.

    abstract:UNLABELLED:Thirty-five patients (23 males and 12 females), age 35 +/- 13 years old, presenting either idiopathic calcium nephrolithiasis, nephrocalcinosis or mild renal failure with idiopathic calcium nephrolithiasis were selected for the analysis of low molecular weight proteinuria and the possible mutations occurrenc...

    journal_title:Anais da Academia Brasileira de Ciencias

    pub_type: 杂志文章

    doi:10.1590/s0001-37652005000100007

    authors: Rebelo MA,Tostes V,Araújo NC,Martini SV,Botelho BF,Guggino WB,Morales MM

    更新日期:2005-03-01 00:00:00

  • Tephritidae flies associated with Chuquiraga avellanedae (Asteraceae) in Patagonia, Argentina.

    abstract::In Patagonia, knowledge about the interaction among tephritids and the native flora is very scarce. In this study we identified for the first time two tephritid species (Cecidochares sp. and Neosphaeniscus m-nigrum) associated with the capitula of Chuquiraga avellanedae. This is the first record of a host plant for th...

    journal_title:Anais da Academia Brasileira de Ciencias

    pub_type: 杂志文章

    doi:10.1590/0001-3765202020191524

    authors: Martinez FJ,Norrbom AL,Schliserman P,Campanella MV

    更新日期:2020-10-12 00:00:00

  • The behavior of Aphis gossypii and Aphis craccivora (Hemiptera: Aphididae) and of their predator Cycloneda sanguinea (Coleoptera: Coccinellidae) in cotton-cowpea intercropping systems.

    abstract::The intercropping is an important cultural practice commonly used in pest management. It is based on the principle that increased plant diversity in the agro-ecosystem can lead to reductions of pest populations in the crop. The current study aimed to assess the impact the colored fiber cotton-cowpea intercropped syste...

    journal_title:Anais da Academia Brasileira de Ciencias

    pub_type: 杂志文章

    doi:10.1590/0001-3765201820160212

    authors: Fernandes FS,Godoy WAC,Ramalho FS,Malaquias JB,Santos BDB

    更新日期:2018-01-01 00:00:00

  • Ecological capability evaluation for afforestation and forest expansion using Geographic Information System (GIS) in management area of Caspian Sea.

    abstract::Ecological capability evaluation is referred to as evaluation of potential capability of land and determination of its natural land use. In this paper, ecological capability of Lille Basin in Lahijan was evaluated for afforestation and forest expansion using Geographical Information Systems (GIS). For this purpose, in...

    journal_title:Anais da Academia Brasileira de Ciencias

    pub_type: 杂志文章

    doi:10.1590/0001-3765201820170805

    authors: Hashemi SA

    更新日期:2018-10-01 00:00:00

  • Stonemeal of Amazon soils with sediments from reservoirs: a case study of remineralization of the Tucuruí degraded land for agroforest reclamation.

    abstract::This study suggests the employment of accumulated sediments in the reservoir of Tucuruí (Pará /Brazil) to remineralize the surrounding degraded soils. The approach was based on the principles of stonemeal technology. It suggests that the soil can be rejuvenated by crushed rocks rich in macro and micronutrients. Remova...

    journal_title:Anais da Academia Brasileira de Ciencias

    pub_type: 杂志文章

    doi:10.1590/s0001-37652013000100003

    authors: Theodoro SH,Leonardos OH,Rocha E,Macedo I,Rego KG

    更新日期:2013-03-01 00:00:00

  • Antifungal and antitumor models of bioactive protective peptides.

    abstract::Peptides are remarkably reactive molecules produced by a great variety of species and able to display a number of functions in uni-and multicellular organisms as mediators, agonists and regulating substances. Some of them exert cytotoxic effects on cells other than those that produced them, and may have a role in cont...

    journal_title:Anais da Academia Brasileira de Ciencias

    pub_type: 杂志文章

    doi:10.1590/s0001-37652009000300015

    authors: Rodrigues EG,Dobroff AS,Taborda CP,Travassos LR

    更新日期:2009-09-01 00:00:00

  • Ultrastructure and pollen morphology of Bromeliaceae species from the Atlantic Rainforest in Southeastern Brazil.

    abstract::Pollen grain morphology of Bromeliaceae species collected in areas of the Atlantic Rainforest of southeastern Brazil was studied. The following species were analyzed: Aechmea bambusoides L.B.Sm. & Reitz, A. nudicaulis (L.) Griseb., A. ramosa Mart. ex Schult.f., Ananas bracteatus (Lindl.) Schult.f., Billbergia distachi...

    journal_title:Anais da Academia Brasileira de Ciencias

    pub_type: 杂志文章

    doi:10.1590/0001-3765201620140715

    authors: Silva VJ,Ribeiro EM,Luizi-Ponzo AP,Faria AP

    更新日期:2016-01-01 00:00:00

  • Administering ascorbic acid to rats undergoing ageing processes: effects on myosin-V immunoreactive myenteric neurons.

    abstract::During the ageing process the enteric nervous system undergoes morphofunctional changes, such as enteric neurodegeneration. Neuronal death can be attributed to increase radicals free, and ascorbic acid (AA), known antioxidant, could minimize damage cause by oxidative stress. The objective of this study is to analyse t...

    journal_title:Anais da Academia Brasileira de Ciencias

    pub_type: 杂志文章

    doi:10.1590/S0001-37652013005000002

    authors: Mello SA,Marese AC,Brancalhão RM,Zanoni JN,Natali MR

    更新日期:2013-03-01 00:00:00

  • Splendid oddness: revisiting the curious trophic relationships of South American Pleistocene mammals and their abundance.

    abstract::The South American Pleistocene mammal fauna includes great-sized animals that have intrigued scientists for over two centuries. Here we intend to update the knowledge on its palaeoecology and provide new evidence regarding two approaches: energetics and population density and relative abundance of fossils per taxa. To...

    journal_title:Anais da Academia Brasileira de Ciencias

    pub_type: 杂志文章

    doi:10.1590/0001-3765201420120010

    authors: Fariña RA,Czerwonogora A,di Giacomo M

    更新日期:2014-03-01 00:00:00

  • New approaches to the treatment of orphan genetic disorders: Mitigating molecular pathologies using chemicals.

    abstract::With the advance and popularization of molecular techniques, the identification of genetic mutations that cause diseases has increased dramatically. Thus, the number of laboratories available to investigate a given disorder and the number of subsequent diagnosis have increased over time. Although it is necessary to id...

    journal_title:Anais da Academia Brasileira de Ciencias

    pub_type: 杂志文章,评审

    doi:10.1590/0001-3765201520140711

    authors: Velho RV,Sperb-Ludwig F,Schwartz IV

    更新日期:2015-08-01 00:00:00

  • Physical and chemical study of lattice kaolinites and their interaction with orthophosphate.

    abstract::This study covers the evaluation of the structure and the capacity in adsorbing orthophosphate ions of kaolinites collected from sampling sites in Manaus (Brazil). The kaolinites were obtained using physical fractioning (sieving/siphoning) techniques and chemical treatment with HCl, H2SO4, H2O2 and KCl. The investigat...

    journal_title:Anais da Academia Brasileira de Ciencias

    pub_type: 杂志文章

    doi:10.1590/0001-3765201720160519

    authors: Silva MSE,Lages AS,Santana GP

    更新日期:2017-07-01 00:00:00

  • The T-cell anergy induced by Leishmania amazonensis antigens is related with defective antigen presentation and apoptosis.

    abstract::Leishmania amazonensis is the main agent of diffuse cutaneous leishmaniasis, a disease associated with anergic immune responses. In this study we show that the crude antigen of Leishmania amazonensis (LaAg) but not L. braziliensis promastigotes (LbAg) contains substances that suppress mitogenic and spontaneous prolife...

    journal_title:Anais da Academia Brasileira de Ciencias

    pub_type: 杂志文章

    doi:10.1590/s0001-37652004000300006

    authors: Pinheiro RO,Pinto EF,Benedito AB,Lopes UG,Rossi-Bergmann B

    更新日期:2004-09-01 00:00:00

  • Comparative studies of two dimensional and three dimensional ultrasonic nuchal translucency in trisomy assessments.

    abstract::Current two-dimensional (2D) ultrasonic marker measurements are inherent with intra- and inter-observer variability limitations. The objective of this paper is to investigate the performance of conventional 2D ultrasonic marker measurements and proposed programmable interactive three-dimensional (3D) marker evaluation...

    journal_title:Anais da Academia Brasileira de Ciencias

    pub_type: 杂志文章

    doi:10.1590/s0001-37652012000400030

    authors: Wee LK,Chai HY,Samsury SR,Mujamil NF,Supriyanto E

    更新日期:2012-12-01 00:00:00

  • Evaluation of the impact of pharmaceutical care for tuberculosis patients in a Secondary Referral Outpatient Clinic, Minas Gerais, Brazil.

    abstract::Pharmaceutical care is a professional practice seeking the responsible provision of drug therapy by identifying, resolving, and preventing Drug-Related Problems (DRP). The study aims to describe and evaluate the impact of pharmaceutical care given to patients being treated for tuberculosis (TB). Study concurrent, long...

    journal_title:Anais da Academia Brasileira de Ciencias

    pub_type: 杂志文章

    doi:10.1590/0001-3765201720170301

    authors: Lopes ARV,Miranda SS,Ceccato MDGB,Silveira MR,Resende NH,Carvalho WS

    更新日期:2017-10-01 00:00:00

  • Phenolic content and antioxidant capacity of infusions herbs: Optimization of phenolic extraction and HPLC-DAD method.

    abstract::The aim of this work was to investigate the phenolic content and antioxidant capacity of infusions of commercial herb samples (fennel, anise, peppermint, lemon grass and lemon balm) popularly consumed in Brazil. The infusion preparation for phenolic extraction was optimized using multivariate planning. Spectrophotomet...

    journal_title:Anais da Academia Brasileira de Ciencias

    pub_type: 杂志文章

    doi:10.1590/0001-3765202020190646

    authors: Santos WNLD,MagalhÃes BEA

    更新日期:2020-11-11 00:00:00

  • An integrated approach clarifies the cryptic diversity in Hypostomus Lacépède 1803 from the Lower La Plata Basin.

    abstract::Hypostomus commersoni Valenciennes 1836, Hypostomus cordovae (Günther 1880) and Hypostomus laplatae (Eigenmann 1907) have been little studied since their original descriptions. This study shows a comprehensive review of these species from the Lower La Plata Basin, including their taxonomic history, distribution, color...

    journal_title:Anais da Academia Brasileira de Ciencias

    pub_type: 杂志文章

    doi:10.1590/0001-3765201920180131

    authors: Cardoso YP,Brancolini F,Protogino L,Paracampo A,Bogan S,Posadas P,Montoya-Burgos JI

    更新日期:2019-01-01 00:00:00

  • Experimental validation of a bearing wear model using the directional response of the rotor-bearing system.

    abstract::The present work gives continuity in the analysis of the wear influence on cylindrical hydrodynamic bearings by presenting an experimental validation of the wear model previously proposed by the authors. This validation is carried on using the frequency response of the rotor-bearings system in directional coordinates....

    journal_title:Anais da Academia Brasileira de Ciencias

    pub_type: 杂志文章

    doi:10.1590/0001-3765201620150414

    authors: Machado TH,Cavalca KL

    更新日期:2016-10-01 00:00:00

  • Antiproliferative effect of guava fruit extracts in MDA-MB-435 and MCF-7 human breast cancer cell lines.

    abstract::Breast cancer is the most frequent and lethal neoplastic disease among women worldwide. Psidium Guajava is a promising functional food against cancer, owing to a variety of bioactive compounds. This study aimed to evaluate the anticarcinogenic potential of Pedro Sato (PS), Hitigio (HI) and Tsumori (TS) guava cultivars...

    journal_title:Anais da Academia Brasileira de Ciencias

    pub_type: 杂志文章

    doi:10.1590/0001-3765202020191500

    authors: Correa MG,Couto JS,Trindade BB,Abreu JP,Nakajima VM,Oliveira FL,Farah A,Teodoro AJ

    更新日期:2020-01-01 00:00:00

  • Influence of land use changes on water chemistry in streams in the State of São Paulo, southeast Brazil.

    abstract::Streamwater is affected by several processes in the watershed including anthropogenic activities that result in changes in water quality as well as in the functioning of these stream ecosystems. Therefore, this work aims to evaluate the concentration of major ions (Ca(2+), Mg(2+), Na(+), K(+), NH4(+), NO3(-), NO2(-), ...

    journal_title:Anais da Academia Brasileira de Ciencias

    pub_type: 杂志文章

    doi:10.1590/s0001-37652012000400007

    authors: Silva DM,Camargo PB,McDowell WH,Vieira I,Salomão MS,Martinelli LA

    更新日期:2012-12-01 00:00:00

  • Climatological aspects and changes in temperature and precipitation extremes in Viçosa-Minas Gerais.

    abstract::Extreme climatic events and their hazards have strong impact on society. Urban areas in Brazil are especially vulnerable to the impact of such events due to their rapid growth and inappropriate infrastructure. Viçosa is a mid-sized city in Southeastern Brazil that has been experiencing issues associated with urban exp...

    journal_title:Anais da Academia Brasileira de Ciencias

    pub_type: 杂志文章

    doi:10.1590/0001-3765202020190388

    authors: Avila-Diaz A,Justino F,Lindemann DS,Rodrigues JM,Ferreira GR

    更新日期:2020-01-01 00:00:00

  • Daily practices, consumption and citizenship.

    abstract::This paper promotes a reflection on the relationship between daily practices and consumption. Understanding how conflicts, resistance and consensus are generated from daily consumption practices opens up possibilities for reflecting on the construction of sustainability in the context of diversity, one of the landmark...

    journal_title:Anais da Academia Brasileira de Ciencias

    pub_type: 杂志文章

    doi:10.1590/s0001-37652011005000043

    authors: Mazzarino JM,Morigi VJ,Kaufmann C,Farias AM,Fernandes DA

    更新日期:2011-12-01 00:00:00

  • Endoscopic and symptoms analysis in Mexican patients with irritable Bowel syndrome, dyspepsia, and gastroesophageal reflux disease.

    abstract::The aim of this study was to analyze the data of endoscopy and symptoms in 118 Mexican patients with irritable bowel syndrome (IBS), dyspepsia, non-erosive reflux disease (NERD) and erosive esophagitis (EE). IBS criteria were fulfilling for dyspepsia patients in 47%, for NERD in 48%, and for EE patients in 48% of case...

    journal_title:Anais da Academia Brasileira de Ciencias

    pub_type: 杂志文章

    doi:10.1590/s0001-37652010000400018

    authors: Camacho S,Bernal F,Abdo M,Awad RA

    更新日期:2010-12-01 00:00:00

  • PCR-based detection of Helicobacter spp. in animal facilities of a University in Rio de Janeiro, Brazil.

    abstract::Pathogenic microbial detection and control in laboratory animal facilities is essential to guarantee animal welfare, data validity and reproducibility. Helicobacter spp. are known to affect mice health, what may interfere with experimental outcomes. This study aimed to screen for Helicobacter spp. in mice from animal ...

    journal_title:Anais da Academia Brasileira de Ciencias

    pub_type: 杂志文章

    doi:10.1590/0001-3765202020191517

    authors: Matos-Rodrigues GE,Masseron CC,Silva FJMD,Frajblat M,Moreira LO,Martins RAP

    更新日期:2020-01-01 00:00:00

  • Influence of the nycthemeral cycle on the roosting behaviour of the Orange-winged Amazon.

    abstract::Environmental stimuli exert important effects on the expression of the endogenous rhythms. Daily movements of groups of parrots in response to the light/dark cycle have been studied by several researchers. However, the factors modifying the intrinsic rhythmicity of this behaviour remain little known. This study descri...

    journal_title:Anais da Academia Brasileira de Ciencias

    pub_type: 杂志文章

    doi:10.1590/s0001-37652012005000029

    authors: Moura LN,Silva ML,Vielliard JM

    更新日期:2012-06-01 00:00:00

  • Notes on court and copula, fertility, nest, eggs and hatchlings of the Caatinga's black snake Boiruna sertaneja Zaher, 1996 (Serpentes: Dipsadidae) from northeastern Brazil.

    abstract::The Caatinga's black snake Boiruna sertaneja is a Pseudoboini species, endemic of the Caatinga biome. It is rare and fits in five traits that suggest it deserve more attention in reproduction research and conservation policies. Here we provide information on reproductive biology of B. sertaneja by adding new data abou...

    journal_title:Anais da Academia Brasileira de Ciencias

    pub_type: 杂志文章

    doi:10.1590/0001-3765202020190588

    authors: Guedes T,Guedes A

    更新日期:2020-01-01 00:00:00

  • Pond characteristics influence the intraspecific variation in the morphometry of the tadpoles of two species of Dendropsophus (Anura: Hylidae) from the Cerrado savanna of northeastern Brazil.

    abstract::Spatial variation in the environment may be an important source of morphological variation in many organisms. Tadpoles are valuable model organisms for studies of morphological variation, and in particular, the evaluation of the relationship between environmental and morphological variables. In heterogeneous environme...

    journal_title:Anais da Academia Brasileira de Ciencias

    pub_type: 杂志文章

    doi:10.1590/0001-3765202020181171

    authors: Lopes GN,Serra RTA,Piorski NM,Andrade GV

    更新日期:2020-11-02 00:00:00

  • Population structure and allometry of Podocnemis unifilis (Testudines, Podocnemididae) in a protected area upstream Belo Monte dam in Xingu River, Brazil.

    abstract::Amazon river turtles are increasingly threatened by habitat loss and alteration due to the Brazilian energy policy based on construction of hydroelectric dams, meanwhile, populational studies remain scarce. We described the population structure, and established body allometric relationships of Podocnemis unifilis in t...

    journal_title:Anais da Academia Brasileira de Ciencias

    pub_type: 杂志文章

    doi:10.1590/0001-3765201520140321

    authors: Miorando PS,Giarrizzo T,Pezzuti JC

    更新日期:2015-10-01 00:00:00

  • Penguins and their noisy world.

    abstract::Penguins identify their mate or chick by an acoustic signal, the display call. This identification is realized in a particularly constraining environment: the noisy world of a colony of thousands of birds. To fully understand how birds solve this problem of communication, we have done observations, acoustic analysis, ...

    journal_title:Anais da Academia Brasileira de Ciencias

    pub_type: 杂志文章

    doi:10.1590/s0001-37652004000200015

    authors: Aubin T

    更新日期:2004-06-01 00:00:00

  • Centesimal composition and physical-chemistry analysis of the edible mushroom Lentinus strigosus occurring in the Brazilian Amazon.

    abstract::The centesimal composition and the physical and chemical analyses of Lentinus strigosus, an edible mushroom occurring in the Brazilian Amazon and produced in alternative substrates based on wood and agroindustrial residues, were evaluated. For this purpose, the C, N, pH, soluble solids, water activity, protein, lipids...

    journal_title:Anais da Academia Brasileira de Ciencias

    pub_type: 杂志文章

    doi:10.1590/0001-3765201399412

    authors: Sales-Campos C,Araujo LM,Minhoni MT,Andrade MC

    更新日期:2013-01-01 00:00:00