Results 41 to 50 of about 753 (160)
Figure 1. Bayesian inference (BI) majority consensus tree based on the concatenated molecular data, showing the phylogenetic relationships of tinamous (see also Supporting Information, Figs S6–S8).
Porzecanski, Ana L +3 more
core +2 more sources
New Comparative Data on the Long Bone Microstructure of Large Extant and Extinct Flightless Birds
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
Metric variation in the postcranial skeleton of ostriches,Struthio(Aves: Palaeognathae), with new data on extinct subspecies [PDF]
AbstractAs a result of numerous fossil and subfossil finds of ostriches, there is great demand for a comprehensive osteometric dataset for the living species and subspecies of the genus Struthio. We meet this demand by providing a set of > 100 measurements for a sample of 18 sexed skeletons, including all living and recently extinct species and ...
Elzanowski, Andrzej, Louchart, Antoine
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New Avian Hepadnavirus in Palaeognathous Bird, Germany
In 2015, we identified an avian hepatitis B virus associated with hepatitis in a group of captive elegant-crested tinamous (Eudromia elegans) in Germany. The full-length genome of this virus shares
Wendy K. Jo +10 more
doaj +1 more source
Amniote vertebrates share a suite of extra-embryonic membranes that distinguish them from anamniotes. Other than that, however, their reproductive characteristics could not be more different. They differ in basic ectothermic vs endothermic physiology, in
Shai Meiri +6 more
doaj +1 more source
Figure 3. Divergence-date estimates obtained with the two alternative molecular matrices (black lines, complete; grey lines, RAG2 only). In both cases, the fossil-based calibration scheme used the Diogenornis age constraint (see Table 1).
Porzecanski, Ana L +3 more
core +1 more source
On the Morphology and Phylogeny of the Palaeognathae (Ratitae and Crypturi) and Neognathae (Carinatae) [PDF]
n ...
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Figure 2. Simpson's ratio diagram comparing the lengths of scapulocoracoid (SC), humerus (H), femur (F), tibiotarsus (TT), tarsometatarsus (TM), and the first (III/1), second (III/2), and third (III/3) pedal digit III phalanges of living and extinct ...
Elzanowski, Andrzej, Louchart, Antoine
core +1 more source
Birds and hard ticks (Acari: Ixodidae), with discussions about hypotheses on tick evolution
The relationship between birds (Aves) and hard ticks (Ixodidae) was analyzed for the 386 of 725 tick extant species whose larva, nymph and adults are known as well as their natural hosts.
GUGLIELMONE AA, NAVA S
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Ultrastructure of the eggshell of selected Palaeognathae species – a comparative analysis
AbstractThe study aimed at comparative analysis of the eggshell ultrastructure, indicating differences and similarities in its structure depending on the bird species. The study was carried out in ostrich, emu and rhea breeding flocks. The birds were kept under open system.
Danuta Szczerbińska, Monika Wiercińska
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