Results 111 to 120 of about 667,421 (255)

Are there morpho‐acoustic patterns of adaptation in nonhuman primate ears? Testing the role of ecology and habitat in shaping ear morphology and function

open access: yesThe Anatomical Record, EarlyView.
Abstract Analysis of the variation in the bony structures of the inner and middle ear provides critical insights into functional morphology, as well as adaptive morphology across primates. In this study, we investigated whether ear morphology patterns are related to the ecological characteristics of species and their habitats to test two acoustic ...
Myriam Marsot   +4 more
wiley   +1 more source

Morphological and morphometric aspects of the equine aortic valve: New insights for comparative studies in mammals

open access: yesThe Anatomical Record, EarlyView.
Abstract New data on the equine aortic valve obtained using advanced techniques is especially important given the greater availability of animal models for translational research. Here we characterized the morphological and morphometric aspects of the equine aortic valve from 60 healthy hearts collected at equine abattoirs.
Vitor Pires Pereira   +3 more
wiley   +1 more source

La valoración plural de un río de flujo libre: análisis comparativo entre dos comunidades usando redes semánticas

open access: yesTecnología y ciencias del agua
Los ríos de flujo libre (RFL) se caracterizan por su conectividad fluvial íntegra y por proveer múltiples beneficios a las comunidades asentadas en ellos.
Aurora Cortés-Espino   +3 more
doaj   +1 more source

Clutch size of Caiman latirostris (Crocodylia: Alligatoridae) varies on a latitudinal gradient [PDF]

open access: yes, 2009
The distribution of the Broad-Snouted Caiman (Caiman latirostris) ranges from 5°S to 32°S. Thus, caiman populations are exposed to different climatic conditions, and this latitudinal gradient could affect aspects of their reproduction.
Piña, Carlos Ignacio   +2 more
core  

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

open access: yesThe Anatomical Record, EarlyView.
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

Herramientas computacionales para la simulación de episodios de contaminación atmosférica [PDF]

open access: yes, 2013
The present work briefly details the theoretical aspects of numerical methods for the simulation of turbulent transport and dispersion of gases into the atmospheric boundary layer.
Aguirre, Cesar Augusto   +2 more
core  

Revisiting a long‐overlooked skull: Implications for the distribution of Dinodontosaurus brevirostris (Kannemeyeriiformes) in the Brazilian Triassic

open access: yesThe Anatomical Record, EarlyView.
Abstract Dicynodonts (Anomodontia: Dicynodontia) were one of the main groups of terrestrial tetrapods in Permian and Triassic faunas. In Brazil, the genus Dinodontosaurus is one of the most common tetrapod taxon in the Triassic Santa Maria Supersequence. This genus has a complex taxonomic history and is represented in the Triassic of both Argentina and
Julia Lara Rodrigues de Souza   +5 more
wiley   +1 more source

Biodiversity of the "Pre Delta", National Park [PDF]

open access: yes, 2004
Biodiversity can be understood by the means of two terms: richness and evenness. We study the biological richness of Pre Delta National Park (Entre Ríos, Argentina) on its floristic and ornithological, mastozoological and amphibian fauna.
Aceñolaza, Pablo Gilberto   +5 more
core  

From armadillos to sloths: Patterns and variations in xenarthran coronary anatomy

open access: yesThe Anatomical Record, EarlyView.
Abstract Species of the superorder Xenarthra play a vital ecological role in the Neotropics. Despite their evolutionary significance, anatomical studies on their coronary circulation remain scarce. This study investigated the coronary anatomy of 82 hearts from nine Xenarthra species across the Dasypodidae, Myrmecophagidae, and Bradypodidae.
Wilson Viotto‐Souza   +5 more
wiley   +1 more source

Fitoplancton de la cuenca del Tajamar en el Noroeste de Argentina

open access: yesLilloa
El objetivo de este trabajo fue contribuir al conocimiento ficoflorístico de la cuenca del Tajamar, a través de sus tributarios (ríos Chorrillos y Nío) y su curso principal (río Tajamar). Esta cuenca, área poco estudiada con respecto a las microalgas, se
Virginia Mirande   +2 more
doaj   +1 more source

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