Results 81 to 90 of about 5,498 (228)

Inside a duck‐billed dinosaur: Vertebral bone microstructure of Huallasaurus (Hadrosauridae), Upper Cretaceous of Patagonia

open access: yesThe Anatomical Record, Volume 309, Issue 7, Page 1702-1712, July 2026.
Abstract Dinosaurs evolved a unique respiratory system with air sacs that contributed to their evolutionary success. Postcranial skeletal pneumaticity (PSP) has been used to infer the presence of air sac systems in some fossil archosaurs. While unambiguous evidence of PSP is well documented in pterosaurs and post‐Carnian saurischians, it remains absent
Tito Aureliano   +3 more
wiley   +1 more source

A paleontologia na perspectiva do ensino

open access: yesTerrae Didatica, 2019
O ensino de paleontologia pressupõe compreender o processo evolutivo, baseado em evidências: os fósseis. Logo, analisar a produção cientifica sobre este tema é relevante, pois através desta, podemos verificar de forma indireta se a abordagem, além de desenvolvida em sala de aula, está sendo publicada.
Rômulo Hohemberger   +3 more
openaire   +2 more sources

Scientific literacy based on the prior conceptions of third and fourth-grade elementary school students regarding fossils

open access: yesAmazônia
This article aims to investigate the previous conceptions of students in the Early Years of Elementary School in relation to the topic of fossils, based on Scientific Literacy indicators.
Ruben Alexandre Boelter   +1 more
doaj   +1 more source

OBITUARIO Doctora María Elena Ibarra Martín

open access: yesRevista de Investigaciones Marinas, 2023
La Doctora María Elena Ibarra Martin nació el 27 de diciembre de 1932, en Santiago de Cuba. En 1959 fue investigadora del Instituto Cubano de Cartografía y Catastro. De 1960 a 1963 Jefe del Laboratorio de Paleontología y Petrografía del Instituto Cubano
Ana María Suárez Alfonso
doaj  

Editorial Anuário do Instituto de Geociências 2005/1

open access: yesAnuário do Instituto de Geociências, 2005
Ano 2005 Volume 28 - 1 II Jornada Fluminense de Paleontologia Editor: Ismar de Souza Carvalho Coordenadora: Maria Antonieta da Conceição Rodrigues Editorial ISSN: 0101-9759 A
Ismar de Souza Carvalho
doaj  

A Formação Serra Alta, Permiano, no centro-leste do Estado de São Paulo, Bacia do Paraná, Brasil

open access: yesBrazilian Journal of Geology
A individualização e o mapeamento da Formação Serra Alta no Estado de São Paulo sempre foi motivo de controvérsia na comunidade geológica. Apesar de apresentar extensão comparável à Formação Irati em subsuperfície, a unidade ainda carece de estudos mais ...
Lucas Veríssimo Warren   +4 more
doaj   +1 more source

In Search of the Lost Brown Trout (Salmo trutta Complex) Using DNA of Ancient and Modern Samples From the Southern Italian Peninsula

open access: yesEvolutionary Applications, Volume 19, Issue 6, June 2026.
ABSTRACT The current diversity and distribution of species and populations have been shaped by the major climatic oscillations during the Quaternary. The brown trout (Salmo trutta) is a striking example of the strong effect of past climate changes on the evolutionary history of species, in fact, the alternation of glacial/interglacial cycles has led to
Tatiana Fioravanti   +5 more
wiley   +1 more source

Avaliação crítica da abordagem paleontológica em livros didáticos dos anos finais do ensino fundamental

open access: yesAlexandria
A Paleontologia é uma ciência fundamental no processo de ensino-aprendizagem para a compreensão de processos naturais complexos e para a formação de cidadãos críticos, mas seu conhecimento ainda está restrito ao meio acadêmico.
Clarice Assumpção da Costa   +4 more
doaj   +1 more source

Hindlimb functional morphology and locomotor biomechanics of the small Late Triassic pseudosuchian reptile Gracilisuchus stipanicicorum (Archosauria: Gracilisuchidae)

open access: yesJournal of Anatomy, Volume 248, Issue 6, Page 1026-1063, June 2026.
A three‐dimensional biomechanical model of the musculoskeletal system is used to analyse the potential locomotor functions of the small (~1 kg) Late Triassic archosaurian reptile Gracilisuchus stipanicicorum. The study finds that, potentially like the ancestral archosaur, this taxon was probably quadrupedal, plantigrade and neither strongly sprawling ...
Agustina Lecuona   +3 more
wiley   +1 more source

Microbially generated ferruginous crusts: A potential biosignature of continental input in coastal settings

open access: yesSedimentology, Volume 73, Issue 4, Page 1225-1243, June 2026.
ABSTRACT Thin ferruginous sandy crusts are common on top of sandstone beds in the Early Permian post‐glacial deposits of the Paraná Basin in southern Brazil. These crusts usually preserve wrinkle structures, suggesting that they might be a product of microbial mediation.
Patrícia Weschenfelder   +2 more
wiley   +1 more source

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