Results 11 to 20 of about 827 (199)

The humerus and stratigraphic range of Palaeospheniscus (Aves, Sphenisciformes)

Ameghiniana, 2017
A comparison between the Paleogene and Neogene marine assemblages in South America suggests a major turnover among penguins by the late Miocene, with the disappearance of the stem Sphenisciformes and the rise of the modern penguins.
Chavez-Hoffmeister, Martin Felipe
core   +2 more sources

Contracaecum pelagicum and C. plagiaticium (Nematoda: Anisakidae) infection in Magellanic penguins (Sphenisciformes: Spheniscidae) on the coast of Rio de Janeiro State [PDF]

Pesquisa Veterinária Brasileira, 2013
The occurrence of infections and the disease induced by Contracaecum plagiaticium and Contracaecum pelagicum in Magellanic penguins, Spheniscus magellanicus Foster.
Sabrina D.E. Campos, Bárbara Bianca N. Pereira, Salvatore Siciliano, Carlos Henrique C. Costa, Nádia R.P. Almosny, Beatriz Brener   +5 more
doaj   +2 more sources

Micro‐CT guided illustration of the head anatomy of penguins (Aves: Sphenisciformes: Spheniscidae)

Journal of Morphology, 2022
The illustration is an important tool to aid in the description and understanding of anatomy, and penguins (Aves: Sphenisciformes: Spheniscidae) are an important clade in environmental monitoring, paleontology, and other research fields.
McGhee, Charles NJ, Daniel Thomas, Jie Zhang, Gerneke, Dane A, Ober, William C., William C. Ober, Hadden, Peter W., Dane A. Gerneke, Charles N. J. McGhee, Gerneke, Dane A., Hadden, Peter W, McGhee, Charles N. J., Ober, William C, Peter W. Hadden, Miriam Scadeng, Zhang, Jie, Thomas, Daniel, Scadeng, Miriam   +17 more
core   +3 more sources

FUNCTIONAL IMPLICATIONS OF A SINGULAR PENGUIN SCAPULA (AVES, SPHENISCIFORMES) FROM THE EOCENE OF ANTARCTICA

Rivista Italiana di Paleontologia e Stratigrafia, 2012
Penguins have peculiar modifications in their skeletal anatomy as a consequence of their extremely specialized diving habit. Morphological specialization is particularly evident in the forelimb.
CAROLINA ACOSTA HOSPITALECHE, ULISES DI CARLO   +1 more
doaj   +4 more sources

A Paleocene penguin from New Zealand substantiates multiple origins of gigantism in fossil Sphenisciformes

Nature Communications, 2017
The oldest known penguin fossils date to approximately 62 million years ago. Here, Mayr et al. describe Kumimanu biceae, an extinct penguin from approximately 55–60 million years ago, which represents an independent origin of giant size soon after the ...
Gerald Mayr, R. Paul Scofield, Vanesa L. De Pietri, Alan J. D. Tennyson   +3 more
doaj   +4 more sources

Contracaecum pelagicum and C. plagiaticium (Nematoda: Anisakidae) infection in Magellanic penguins (Sphenisciformes: Spheniscidae) on the coast of Rio de Janeiro State Infecção por Contracaecum pelagicum e C. plagiaticium (Nematoda: Anisakidae) em pinguins-de-Magalhães (Sphenisciformes: Spheniscidae) na costa do Estado do Rio de Janeiro

Pesquisa Veterinária Brasileira, 2013
The occurrence of infections and the disease induced by Contracaecum plagiaticium and Contracaecum pelagicum in Magellanic penguins, Spheniscus magellanicus Foster.
Sabrina D.E. Campos, Bárbara Bianca N. Pereira, Salvatore Siciliano, Carlos Henrique C. Costa, Nádia R.P. Almosny, Beatriz Brener   +5 more
doaj   +1 more source

The pectoralis muscle orientation as an indicator of the modes of wing-propelled locomotion in birds. [PDF]

J Anat
The pectoralis orientation of birds was consistent with the orientation of the aerodynamic force acting on the wing, varying by wing‐propelled locomotion (WPL) mode. The skeletal morphology unique to each WPL mode, related to the origin/insertion of the pectoralis, may be associated with these functional demands of pectoralis orientation.
Akeda T, Fujiwara SI.
europepmc   +2 more sources

Insight Into Body Size Evolution in Aves: Based on Some Body Size-Related Genes. [PDF]

Integr Zool
These findings provide new insights into the genetic determinants of body size evolutionary mechanisms in Aves. ABSTRACT Birds exhibit remarkable variations in body size, making them an ideal group for the study of adaptive evolution. However, the genetic mechanisms underlying body size evolution in avian species remain inadequately understood.
Luo C, Xu X, Zhao C, Wang Q, Wang R, Lang D, Zhang J, Hu W, Mu Y.   +8 more
europepmc   +2 more sources

A Reproducible, Data-Driven Approach to Mapping Species Distributions Using Presence-Only Data and Biogeographic Templates. [PDF]

Ecol Evol
This study presents a novel, data‐driven approach for mapping species' extent of occurrence (EOO) that addresses the issues of reproducibility and precision of expert‐derived range maps. By combining presence‐only data with the operational units of a biogeographic template within a consistent quantitative framework, our approach generates spatially ...
Montalvo-Mancheno CS, Buettel JC, Ondei S, Brook BW.   +3 more
europepmc   +2 more sources

Sound Guides Object Size Choices in African Penguins Through Pitch-Size Association. [PDF]

Ann N Y Acad Sci
African penguins use auditory pitch to guide visual size choices. When hearing high‐pitched sounds, they preferentially approach and gaze at smaller objects, and when hearing low‐pitched sounds, they preferentially approach and gaze at larger ones.
Terranova F, D'Orazio F, Pilenga C, Baciadonna L, Reby D, Favaro L.   +5 more
europepmc   +2 more sources