Diversity, 2022 Despite its current low diversity, the penguin clade (Sphenisciformes) is one of the groups of birds with the most complete fossil record. Likewise, from the evolutionary point of view, it is an interesting group given the adaptations developed for ...
Jonathan Pelegrin Ramírez +2 more
exaly +3 more sources
Microstructural Variations in the Bone of Pygoscelis antarctica (Aves, Sphenisciformes) During the Postnatal Ontogeny [PDF]
BiologyOntogenetic changes in bone microstructure provide key information on growth patterns and functional differentiation in birds. This study describes microanatomical and histological variation in the appendicular and axial skeleton across an ontogenetic ...
Luis Marcial Garat +2 more
doaj +2 more sources
What's in a database? Insights from a retrospective review of penguin necropsy records in Aotearoa New Zealand. [PDF]
PLoS ONEWildlife necropsy databases often provide data for morbidity and mortality studies of free-ranging species, with implicit relevance for conservation goals, as well as domestic animal and human health.
Stefan Saverimuttu +8 more
doaj +2 more sources
Factors determining semen sample collection and semen quality parameters in African penguins Spheniscus demersus [PDF]
Scientific ReportsOur research focuses on semen collection from 42 African penguin males, grouped by age, habituation levels, and reproductive season timing. We assess behavioral and physiological responses to dorso-abdominal massage, evaluating species-specific seminal ...
Paweł Borecki +3 more
doaj +2 more sources
Feraequornithes: a name for the clade formed by Procellariiformes, Sphenisciformes, Ciconiiformes, Suliformes and Pelecaniformes (Aves) [PDF]
Vertebrate Zoology, 2021 Recent genomic data sets have resolved many aspects of higher-level phylogenetic relationships of birds. Eleven phylogenomic studies provide congruent support for a clade formed by Procellariiformes, Sphenisciformes, Ciconiiformes, Suliformes and ...
George Sangster, Gerald Mayr
doaj +3 more sources
Checklist of Platyhelminthes, Acanthocephala, Nematoda and Arthropoda parasitizing penguins of the world [PDF]
Check List, 2014 A list of 108 species of metazoans parasites reported from penguins (Sphenisciformes) is provided, with information on their hosts, habitat and distribution.
Martha Brandão +2 more
doaj +3 more sources
Diversity, 2020 We describe a partial skeleton of a stem group penguin from the Waipara Greensand in New Zealand, which is tentatively assigned to Muriwaimanu tuatahi. The fossil includes the first complete wing of a Paleocene penguin and informs on previously unknown ...
Gerald Mayr +5 more
doaj +1 more source
New mammalian and avian records from the late Eocene La Meseta and Submeseta formations of Seymour Island, Antarctica [PDF]
PeerJ, 2020 The middle–late Eocene of Antarctica was characterized by dramatic change as the continent became isolated from the other southern landmasses and the Antarctic Circumpolar Current formed.
Sarah N. Davis +7 more
doaj +2 more sources
Melanin concentration gradients in modern and fossil feathers. [PDF]
PLoS ONE, 2013 In birds and feathered non-avian dinosaurs, within-feather pigmentation patterns range from discrete spots and stripes to more subtle patterns, but the latter remain largely unstudied.
Daniel J Field +5 more
doaj +1 more source
Publicación Electrónica de la Asociación Paleontológica Argentina, 2023 “The present state of knowledge of the Cenozoic birds of Argentina” published in Contributions in Sciences in 1980, written by the argentine paleontologist Eduardo Pedro Tonni, became a must-read for those interested in the record of fossil birds.
Claudia P. Tambussi +2 more
doaj +1 more source