Results 21 to 30 of about 1,895 (219)
A Derived Morphology of the Quadrate May Support a Previously Unrecognized Major Higher-Level Clade of Neoavian Birds. [PDF]
J MorpholThe avian quadrate plays a critical role in cranial kinesis, but few comparative studies exist of its morphological variation across higher‐level taxa. In this study, the occurrence of a markedly concave articular facet of the condylus medialis is surveyed across neornithine birds.
Mayr G.
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Health evaluation of penguins (Sphenisciformes) following mortality in the Falklands (South Atlantic) [PDF]
Diseases of Aquatic Organisms, 2001 In the Falklands, heavy mortality of rock-hopper penguins Eudyptes chrysocome occurred during the 1985-86 breeding season. Starvation was diagnosed as the primary cause of death, possibly caused by a shortage of euphausiid crustaceans (krill) due to unusual meterological conditions.
I. F. Keymer +3 more
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The first skull of Anthropornis grandis (Aves, Sphenisciformes) associated with postcranial elements [PDF]
Comptes Rendus Palevol, 2019 Abstract Associated penguin remains found in Bartonian levels of the Submeseta Formation (Seymour Island, Antarctica), including cranium and mandible, both partial tarsometatarsi, and some other fragmentary bones, are analyzed here. This specimen preserves the first cranium reliably assigned to the giant form Anthropornis grandis, and constitutes the
Nadia Haidr +2 more
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Osteohistological variations in the Antarctic penguin Pygoscelis adeliae (Aves, Sphenisciformes) [PDF]
, 2023 Abstract To analyze the osteohistological variations between adult individuals of Pygoscelis adeliae, histological sections of the mid-level of the shaft of different bones (humerus, radius, ulna, carpometacarpus, femur, tibiotarsus, tarsometatarsus and ribs) of a female and a male, were compared.
Luis Marcial Garat, Marianella Talevi
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Nuevos restos terciarios de Spheniscidae (Aves, Sphenisciformes) procedentes de la costa del Perú
Spanish Journal of Palaeontology, 2021 Se estudian dos nuevos restos de Spheniscidae procedentes de la costa peruana. Uno de ellos, un tarsometatarso, proveniente de la Localidad de Zamaca, Departamento de Ica, fue exhumado de sedimentos de la Formación Chilcatay (Mioceno Medio temprano) y es asignado a Palaeospheniscus sp.
Marcelo Strucchi
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Fossil and modern penguin tarsometatarsi: cavities, vascularity, and resilience. [PDF]
Integr ZoolIn tarsometatarsi of Eocene and extant penguins, the distribution of primary diaphyseal nutrient foramina as well as dimensions of medullary cavities appears to align more with overall body‐size categories than geological age, albeit the extinct genus Anthropornis is unique in both respects.
Jadwiszczak P, Krüger A, Mörs T.
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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
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Frontiers in Cellular and Infection Microbiology, 2022 Aspergillosis remains difficult to diagnose in animals. Laboratory-based assays are far less developed than those for human medicine, and only few studies have been completed to validate their utility in routine veterinary diagnostics.
Guillaume Desoubeaux +4 more
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Los pingüinos (Aves: sphenisciformes) fósiles de Patagonia [PDF]
, 2004 Los <i>Spheniscidae</i> constituyen un grupo de aves buceadoras y no voladoras que habitan los mares australes y cuya historia evolutiva estaría en estrecha relación con las corrientes de aguas frías. En el pasado, sin embargo, habrían habitado aguas más cálidas que en la actualidad, habiendo cambiado sus requerimientos ecológicos en estos ...
Carolina Acosta Hospitaleche
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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
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