Results 41 to 50 of about 254,655 (238)

Paleopathology of a putative colossosaurian caudal vertebra (Neosauropoda: Titanosauria) from the Presidente Prudente Formation, Brazil

The Anatomical Record, EarlyView.
Abstract Studies investigating paleopathologies in sauropods remain scarce despite their relative abundance in the fossil record. In this study we report new occurrence of paleopathological features, corresponding to a neoplasm found in a middle caudal vertebra (MCT.R.2120) of an advanced titanosaur from the Presidente Prudente Formation (Bauru Basin ...
Maria Luiza Peres Bertolossi, Kamila L. N. Bandeira, Roberta Veronese do Amaral, Arthur S. Brum, Rafael C. da Silva, Valéria Gallo   +5 more
wiley   +1 more source

Nota sobre Phiale crocuta (Taczanowski, 1879), su distribución y sus sinónimos (Aranae, Salticidae)

Acta Zoológica Lilloana, 2020
El estudio de una colección de arañas Salticidae de diferentes partes de Perú y Ecuador, ha dado como resultado el hallazgo de una especie poco conocida: Phiale crocuta (Taczanowski), que parece ser muy abundante en las cercanías de edificaciones y ...
María Elena Galiano
doaj  

Leer y escribir en un entorno digital: Prácticas innovadoras en la carrera de Ciencias Biológicas

Arbor: Ciencia, Pensamiento y Cultura, 2011
Se presenta una innovación llevada a cabo en el ingreso a la carrera de Ciencias Biológicas de la Universidad Nacional de Córdoba, Argentina. Esta propuesta revalorizó los entornos virtuales como medios que tienen como soporte la escritura, con la ...
Leticia Garcia, Nora Valeiras
doaj   +1 more source

Early evolution of the gular musculature and its innervation in ray‐finned fishes

The Anatomical Record, EarlyView.
Abstract Gular muscles are an important but often overlooked component of cranial anatomy in bony fishes. They are located on the ventral surface of the head and are derived from the mandibular and hyoid arches. We present a comprehensive review of the gular musculature and its innervation across early diverging actinopterygian lineages. By integrating
Aléssio Datovo, Paulo Presti, George Vita, Murilo N. L. Pastana, Luiz A. W. Peixoto   +4 more
wiley   +1 more source

Biología. Práctica 5: Estudio comparativo y reconocimiento de organismos de los principales grupos y linajes evolutivos vegetales

, 2011
Se trata del guión de práticas de la práctica 5 de la asignatura de Biología del Grado de Biología, junto con las actividades que el alumno tiene que ...
Juan, Ana, Cristóbal Fernanz, José Carlos, Alonso-Vargas, M. Angeles   +2 more
core   +1 more source

BIOLOGÍA ALIMENTARIA DEL PEPITERO DE COLLAR SALTATOR AURANTIIROSTRIS (AVES: EMBERIZIDAE) EN EL VALLE DE INUNDACIÓN DEL RÍO PARANÁ (ARGENTINA) [PDF]

, 1997
This study was undertaken to investigate the alimentary ecology of Saltator a. aurantiirostris by quantifying the trophic spectrum, niche breadth, circadian alimentary activity rythm and habitat selection throughout the four seasons (spring, summer ...
Latino, S., Quiroga, M., Comini, B., Beltzer, Adolfo H.   +3 more
core  

Developmental morphology of claspers and clasper‐glands during maturation in Potamotrygon wallacei (Chondrichthyes: Potamotrygoninae)

The Anatomical Record, EarlyView.
Abstract The claspers are the copulatory organs in male elasmobranchs, responsible for directing the semen into the female cloaca (C). However, the microscopic morphology of the claspers remains poorly understood. This study describes the morphology of the claspers and clasper glands (CGs) of cururu stingray (Potamotrygon wallacei) at different ...
Matheus Samuel Cunha Braga, Grazyelle Sebrenski da Silva, Maria Inês Braga de Oliveira, Jaydione Luiz Marcon, Ruben Dario Morales Gamba   +4 more
wiley   +1 more source

Memoria de Investigación 2024-2025: Departamento de Biología Celular e Histología (Universidad Complutense de Madrid) [PDF]

Memoria de Investigación y Docencia 2024-2025, del Departamento de Biología Celular e Histología.Depto. de Biología CelularFac.
Departamento de Biología Celular e Histología (UCM)
core  

Balancing mechanics and metabolism: Elevational variation in the microanatomy of hummingbird flight muscle

The Anatomical Record, EarlyView.
Abstract Factors varying along elevational gradients impose strong aerodynamic and physiological constraints on powered flight, yet the internal microanatomical variation associated with elevational context in animals under such conditions remains poorly understood.
Juan Camilo Ríos‐Orjuela, Juliana Novoa‐Páramo, Maria Juliana Villalba Patiño, Zayra Viviana Garavito‐Aguilar, Alejandro Rico‐Guevara, Carlos Daniel Cadena   +5 more
wiley   +1 more source

The lower deciduous dentition of protodidelphids (Mammalia, Marsupialia) from the Itaboraí Basin (lower Eocene), Brazil, and the validity of “Riolestes capricornicus” (Goin et al., 2009)

The Anatomical Record, EarlyView.
Abstract The Itaboraí Basin, Southeastern Brazil, preserved one of the most diverse mammalian faunas from the Paleogene, with Metatheria comprising more than 60% of its diversity. Among identified metatherian clades, it has been argued that Paucituberculata is represented by “Riolestes capricornicus”.
Leonardo M. Carneiro, Hugo Bampi, João P. P. Araújo, Marina B. Soares, Gustavo R. Oliveira   +4 more
wiley   +1 more source