Results 111 to 120 of about 2,459,011 (325)

Histology and fossil diagenesis of a pterosaur tooth from the Crato Formation (Lower Cretaceous of Brazil)

The Anatomical Record, EarlyView.
Abstract Pterosaur dental biology remains poorly understood despite its importance for comprehending feeding strategies and flight adaptations. Here, we present the first comprehensive histological analysis of an ornithocheiriform pterosaur tooth from the Lower Cretaceous Crato Formation (Santana Group, Northeast Brazil).
Tito Aureliano, Matheus P. S. Rocha, Francisco P. Lima‐Filho, Aline M. Ghilardi   +3 more
wiley   +1 more source

Uncinaria hamiltoni (Nematoda: Ancylostomatidae) in South American Sea Lions, Otaria flavescens, From Northern Patagonia, Argentina [PDF]

, 2004
Bárbara Berón‐Vera, Enrique A. Crespo, Juan Antonio Raga, Susana N. Pedraza   +3 more
openalex   +1 more source

Dos nuevas especies de Pogonomyrmex (Hymenoptera: Formicidae) de la Argentina [PDF]

, 2009
Se describen dos nuevas especies de Pogonomyrmex Mayr para la Argentina: P. mendozanus sp. nov. y P. kusnezovi sp. nov. Se presenta una lista actualizada de las especies de Pogonomyrmex de la Argentina junto con datos de distribución, comentarios sobre ...
Claver, Silvia, Cuezzo, Fabiana del Carmen   +1 more
core  

Cranial anatomy of a Late Cretaceous aspidorhynchid fish (Neopterygii: Aspidorhynchiformes) from Alberta, Canada

The Anatomical Record, EarlyView.
Abstract Belonostomus longirostrisis was named for an isolated jaw fragment from freshwater Upper Cretaceous (Campanian) sediments of the Dinosaur Park Formation of Alberta, Canada. Following the description of the Albertan species, numerous isolated cranial and postcranial elements have been collected from the Dinosaur Park Formation and assigned to B.
Mondo Miyazato, Luke E. Nelson, Joshua A. Doyon, Donald B. Brinkman, Alison M. Murray   +4 more
wiley   +1 more source

Un tesoro inexplorado: los periódicos escolares en la Argentina - A unexplored treasure: school journals in Argentina

História da Educação, 2013
No âmbito desse artigo propõe-se a identificar as origens da imprensa produzida por estudantes na Argentina e situar esse objeto impresso no contexto das atividades de produção e distribuição da imprensa em geral e da imprensa educativa e infantil em ...
Silvia Finocchio, Argentina
doaj  

An unusual titanosaur axis from the Upper Cretaceous of Brazil and its significance for sauropod anatomy and systematics

The Anatomical Record, EarlyView.
Abstract The Upper Cretaceous São José do Rio Preto Formation (Bauru Group, southeastern Brazil) has yielded a fragmentary but taxonomically diverse record of titanosaur sauropods, although elements from cervical series remain scarce. Here, we describe a nearly complete sauropod axis from the Vila Ventura Paleontological Area, representing an uncommon ...
Bruno A. Navarro, Jeffrey A. Wilson Mantilla, Jhonata H. A. Martins, Fabiano V. Iori, Leonardo S. Paschoa, Alberto B. Carvalho, Joseli M. Piranha, Hussam Zaher   +7 more
wiley   +1 more source

La escolarización en la campaña bonaerense: un campo de disputas en la conformación del poder social (1850-1875) - The education in Buenos Aires’ countryside: a field of disputes in the conformation of the social power (1850-1875)

História da Educação, 2011
 A ESCOLARIZAÇÃO NA REGIÃO RURAL DE BUENOS AIRES: UM CAMPO DE DISPUTAS NA CONFORMAÇÃO DO PODER SOCIAL (19850-1875)ResumoNeste artigo, abordam-se alguns aspectos da escolarização no cenário rural de Buenos Aires, entre as décadas de 1850 e 1870.
Lucía Lionetti, Argentina
doaj  

Caracterización de la curva de lactancia y rendimiento en cabras Saanen de un tambo de la provincia de Buenos Aires, Argentina

, 2021
Kevin Denís Steffen, Rubén Omar Arias, Lihuel GORTARI-CASTILLO, Gastón Moré   +3 more
openalex   +2 more sources

A new species of Lonchidiidae (Hybodontiformes) from the Late Jurassic of Brazil (Aliança Formation, Jatobá Basin)

The Anatomical Record, EarlyView.
Abstract The Aliança Formation (Jatobá Basin) represents lacustrine deposits formed in oxygenated waters that hosted a diverse fauna, including Hybodontiform sharks. Within this group, the Family Lonchidiidae comprises 11 valid genera, with Parvodus previously reported in Brazilian deposits from the Brejo Santo Formation (Araripe Basin, Late Jurassic ...
Larissa de Souza Ribeiro, Marco Aurélio Gallo de França   +1 more
wiley   +1 more source

Top predator fish assemblages in Northern Patagonia, Argentina. What factors regulate their patterns of distribution and abundance? [PDF]

, 2018
María V. Seco Fernández, Mailén Elizabeth Lallement, Magalí Rechencq, Pablo H. Vigliano, Alejandro Sosnovsky, Patricio J. Macchi   +5 more
openalex   +1 more source