Results 41 to 50 of about 658 (123)
Journal of Morphology, Volume 285, Issue 6, June 2024.We describe the nearly complete digital endocasts of the brain and bony labyrinth of the neotype specimen of Lithornis vulturinus, a palaeognathous bird from the early Eocene of Europe. Lithornis may provide the clearest insights to date into the neuroanatomy of the ancestral crown bird, combining an ancestrally unflexed brain with a caudally oriented ...
Klara E. Widrig +2 more
wiley +1 more source
Global diversity and adaptations of avian eggshell thickness indices
Ibis, Volume 166, Issue 2, Page 534-550, April 2024.The amniote eggshell is a fundamental aspect of the embryo life‐support system, protecting it from UV light, microbes and mechanical damage, while regulating gas exchange and providing calcium for growth. The thickness of eggshells is highly diverse across modern birds and influences multiple eggshell functions, yet the selective pressures driving ...
Marie R. G. Attard, Steven J. Portugal
wiley +1 more source
Publicación Electrónica de la Asociación Paleontológica Argentina, 2015 Since the discovery of this site in 1986. new ichnites of mammals and birds were Iound, as follows: 1) an outstanding trackway composed of 35 footprints assigned to Neomegatherichnum pehuencoensis Aramayo and Manera de Bianco, 1987, (Xenarthra ...
Silvia A. Aramayo +1 more
doaj
Effect of antipredator training on spatial behaviour of male and female Greater Rheas (Rhea americana) reintroduced into the wild [PDF]
, 2018 The Greater Rhea (Rhea americana) is a South-American flightless bird whose populations have decreased due to poaching and fragmentation of suitable habitats, and there has been an urgent need to carry out management practices to prevent local or ...
Martella, Monica Beatriz +2 more
core +1 more source
BioEssays, Volume 46, Issue 1, January 2024.We propose that fovea formation involves dynamic and asymmetric changes in ocular shape in humans and other species with foveated eyes. Abstract The human fovea is known for its distinctive pit‐like appearance, which results from the displacement of retinal layers superficial to the photoreceptors cells.
Ashley M. Rasys +5 more
wiley +1 more source
Palaeognathae: Apterygiformes, Casuariiformes, Rheiformes, Struthioniformes; Tinamiformes
, 2018 The infraclass Palaeognathae includes the flightless ratites (ostrich, emu, rhea, cassowary, kiwi) and the tinamous, a group of related, flighted birds. This chapter focuses on unique anatomy and important non-infectious and infectious diseases of these groups of birds.
openaire +1 more source
Vertebrados del mioceno de la provincia de Entre Ríos, Argentina [PDF]
, 2000 La diversa fauna de antiguos vertebrados que se registra en los acantilados que bordean la margen oriental del río Paraná cerca de la ciudad de Paraná, provincia de Entre Ríos, Argentina se conoce científicamente desde la primera mitad del siglo XIX.
Azpelicueta, María de las Mercedes +14 more
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Vertebrate Footprints and Invertebrate Traces from the Cadronian(Late Eocene) of Trans-Pecos Texas [PDF]
, 1994 Contents: Abstract -- Introduction -- Methods -- Acknowledgments -- Systematic Paleontology -- Vertebrate Footprints -- Invertebrate Traces -- Conclusions -- Plates -- ReferencesCeratomorph remains found in Eocene and Oligocene deposits of Trans-Pecos ...
Langston Jr, Wann +1 more
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Ciência Animal Brasileira, 2008 <span><p align="justify">The register the occurrence of the louse <em>Struthiolipeurus rheae</em> parasitizing rheas (<em>Rhea americana</em>)<em> </em>maintained in conditions conservationist and ...
Ana Carla Diógenes Suassuna +2 more
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Nueva lista de las aves de la provincia de Buenos Aires. [PDF]
, 2001 El presente trabajo aporta información de base para el seguimiento y evaluación de la biodiversidad de las aves a escala local o regional. Para la realización de la lista, hemos tenido como punto de referencia la Lista sistemática de las aves de la ...
Camperi, A. R., Darrieu, C. A.
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