Results 31 to 40 of about 282 (96)

Paleoneurology of stem palaeognaths clarifies the plesiomorphic condition of the crown bird central nervous system

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, Guillermo Navalón, Daniel J. Field   +2 more
wiley   +1 more source

Contribuciones al estudio oologico de los Rheiformes

, 1939
(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
openaire   +2 more sources

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

Dynamic changes in ocular shape during human development and its implications for retina fovea formation

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, Andrew Wegerski, Paul A. Trainor, Robert B. Hufnagel, Douglas B. Menke, James D. Lauderdale   +5 more
wiley   +1 more source

ECTOPARASITISM FOR STRUTHIOLIPEURUS RHEAE (HARRISON, 1916) (PHTHIRAPTERA: PHILOPTERIDAE) IN AMERICAN RHEA (RHEIFORMES: RHEIDAE) IN CAPTIVE CONDITIONS IN THE MUNICIPAL OF MOSSORO, RIO GRANDE DO NORTE, BRAZIL ECTOPARASITISMO POR Struthiolipeurus Rheae (HARRISON, 1916) (PHTHIRAPTERA: PHILOPTERIDAE) EM Rhea americana (RHEIFORMES: RHEIDAE) EM CONDIÇÕES CATIVAS NO MUNICÍPIO DE MOSSORÓ, RIO GRANDE DO NORTE, BRASIL

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, Moacir Franco de Oliveira, Silvia Maria Mendes Ahid   +2 more
doaj  

The Length Polymorphism of the 9th Intron in the Avian CHD1 Gene Allows Sex Determination in Some Species of Palaeognathae. [PDF]

Genes (Basel), 2022
Kroczak A, Wierzbicki H, Urantówka AD.
europepmc   +1 more source

LTR Retroelements and Bird Adaptation to Arid Environments. [PDF]

Int J Mol Sci, 2023
Carotti E, Tittarelli E, Canapa A, Biscotti MA, Carducci F, Barucca M.   +5 more
europepmc   +1 more source

Infection of ratites with clade 2.3.4.4b HPAIV H5N1: potential implications for zoonotic risk. [PDF]

Emerg Microbes Infect
Coombes HA, Terrey J, Schlachter AL, McCarter P, Regina I, Hepple R, Mcginn N, Seekings J, Cooper J, Clifton B, Mollett BC, Falchieri M, Nunez A, Reid SM, James J, Banyard AC.   +15 more
europepmc   +2 more sources

The selfish preen: absence of allopreening in Palaeognathae and its socio-cognitive implications. [PDF]

Anim Cogn, 2023
Jensen TR, Zeiträg C, Osvath M.
europepmc   +1 more source

Internal fossil constraints have more effect on the age estimates of crown Palaeognathae than different phylogenomic data type. [PDF]

Front Bioinform
Selvatti AP, Takezaki N.
europepmc   +1 more source