Results 21 to 30 of about 1,108 (163)

Bone histology, phylogeny, and palaeognathous birds (Aves: Palaeognathae) [PDF]

open access: yesBiological Journal of the Linnean Society, 2014
The presence of a phylogenetic signal in the variation of osteohistological features has been recently debated in the literature. Previous studies have found a significant signal for some features, but these results were obtained on a small amount of characters and a reduced sample.
Lucas J. Legendre   +6 more
openaire   +4 more sources

The impact of allometry on vomer shape and its implications for the taxonomy and cranial kinesis of crown-group birds

open access: yesPeer Community Journal, 2021
Crown birds are subdivided into two main groups, Palaeognathae and Neognathae, that can be distinguished, among other means, by the organization of the bones in their pterygoidpalatine complex (PPC).
Plateau, Olivia, Foth, Christian
doaj   +1 more source

Ontogenetic scaling patterns and functional anatomy of the pelvic limb musculature in emus (Dromaius novaehollandiae) [PDF]

open access: yesPeerJ, 2014
Emus (Dromaius novaehollandiae) are exclusively terrestrial, bipedal and cursorial ratites with some similar biomechanical characteristics to humans. Their growth rates are impressive, as their body mass increases eighty-fold from hatching to adulthood ...
Luis P. Lamas   +2 more
doaj   +2 more sources

"THE PRESENT STATE OF KNOWLEDGE OF THE CENOZOIC BIRDS OF ARGENTINA" BY TONNI 1980: FOUR DECADES AFTER

open access: yesPublicación 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

Analysis of Sex Chromosome Evolution in the Clade Palaeognathae from Phased Genome Assembly. [PDF]

open access: yesGenome Biol Evol, 2021
Abstract Birds in the clade Palaeognathae, excluding Tinamiformes, have morphologically conserved karyotypes and less differentiated ZW sex chromosomes compared with those of other birds. In particular, the sex chromosomes of the ostrich and emu have exceptionally large recombining pseudoautosomal regions (PARs), whereas non-PARs are ...
Okuno M, Mizushima S, Kuroiwa A, Itoh T.
europepmc   +4 more sources

New Comparative Data on the Long Bone Microstructure of Large Extant and Extinct Flightless Birds

open access: yesDiversity, 2022
Here, we investigate whether bone microanatomy can be used to infer the locomotion mode (cursorial vs. graviportal) of large terrestrial birds. We also reexamine, or describe for the first time, the bone histology of several large extant and extinct ...
Aurore Canoville   +2 more
doaj   +1 more source

Whole Genome Analysis of the Red-Crowned Crane Provides Insight into Avian Longevity [PDF]

open access: yes, 2020
The red-crowned crane (Grus japonensis) is an endangered, large-bodied crane native to East Asia. It is a traditional symbol of longevity and its long lifespan has been confirmed both in captivity and in the wild.
Bhak, Jong   +14 more
core   +1 more source

Comparative genomic data of the Avian Phylogenomics Projects [PDF]

open access: yes, 2014
The evolutionary relationships of modern birds are among the most challenging to understand in systematic biology and have been debated for centuries.
Avian Genome Consortium   +7 more
core   +5 more sources

The serine/threonine kinase 33 is present and expressed in palaeognath birds but has become a unitary pseudogene in neognaths about 100 million years ago [PDF]

open access: yes, 2015
BACKGROUND: Serine/threonine kinase 33 (STK33) has been shown to be conserved across all major vertebrate classes including reptiles, mammals, amphibians and fish, suggesting its importance within vertebrates. It has been shown to phosphorylate vimentin
Daniel Schäfer   +3 more
core   +4 more sources

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