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Published on Feb 4, 2019in Scientific Reports4.01
Thomas G. Kaye9
Estimated H-index: 9
(AmeriCorps VISTA),
Michael Pittman9
Estimated H-index: 9
(HKU: University of Hong Kong)
+ 2 AuthorsXing Xu41
Estimated H-index: 41
(CAS: Chinese Academy of Sciences)
In 1862, a fossil feather from the Solnhofen quarries was described as the holotype of the iconic Archaeopteryx lithographica. The isolated feather’s identification has been problematic, and the fossil was considered either a primary, secondary or, most recently, a primary covert. The specimen is surrounded by the ‘mystery of the missing quill’. The calamus described in the original paper is unseen today, even under x-ray fluorescence and UV imaging, challenging its original existence. We answer...
Published on 2019in Evodevo2.12
Katherine Woronowicz1
Estimated H-index: 1
(UCSF: University of California, San Francisco),
Richard A. Schneider27
Estimated H-index: 27
(UCSF: University of California, San Francisco)
The amniote jaw complex is a remarkable amalgamation of derivatives from distinct embryonic cell lineages. During development, the cells in these lineages experience concerted movements, migrations, and signaling interactions that take them from their initial origins to their final destinations and imbue their derivatives with aspects of form including their axial orientation, anatomical identity, size, and shape. Perturbations along the way can produce defects and disease, but also generate the...
Published on Jan 30, 2019in Scientific Reports4.01
Lida Xing18
Estimated H-index: 18
(China University of Geosciences),
Ryan C. McKellar12
Estimated H-index: 12
(KU: University of Kansas)
+ 3 AuthorsLuis M. Chiappe45
Estimated H-index: 45
(Natural History Museum of Los Angeles County)
Over the last three years, Burmese amber (~99 Ma, from Myanmar) has provided a series of immature enantiornithine skeletal remains preserved in varying developmental stages and degrees of completeness. These specimens have improved our knowledge based on compression fossils in Cretaceous sedimentary rocks, adding details of three-dimensional structure and soft tissues that are rarely preserved elsewhere. Here we describe a remarkably well-preserved foot, accompanied by part of the wing plumage. ...
Published on Mar 21, 2019in Scientific Reports4.01
Thomas G. Kaye9
Estimated H-index: 9
(AmeriCorps VISTA),
Michael Pittman9
Estimated H-index: 9
(HKU: University of Hong Kong)
+ 3 AuthorsAngela D. Buscalioni24
Estimated H-index: 24
(UAM: Autonomous University of Madrid)
Laser-Stimulated Fluorescence (LSF) is used to identify fully fledged feathering in the hatchling enantiornithine bird specimen MPCM-LH-26189, supporting precocial nesting behavior in this extinct group. The LSF results include the detection of a long pennaceous wing feather as well as cover feathers around the body. The LSF technique showed improved detection limits over and above synchrotron and UV imaging which had both been performed on this specimen. The findings underscore the value of usi...
Published on Jun 1, 2019in Trends in Ecology and Evolution15.24
Michael J. Benton66
Estimated H-index: 66
(UoB: University of Bristol),
Danielle Dhouailly25
Estimated H-index: 25
+ 1 AuthorsMaria E. McNamara12
Estimated H-index: 12
(UCC: University College Cork)
Feathers have long been regarded as the innovation that drove the success of birds. However, feathers have been reported from close dinosaurian relatives of birds, and now from ornithischian dinosaurs and pterosaurs, the cousins of dinosaurs. Incomplete preservation makes these reports controversial. If true, these findings shift the origin of feathers back 80 million years before the origin of birds. Gene regulatory networks show the deep homology of scales, feathers, and hairs. Hair and feathe...
Published on Feb 20, 2019in Systematic Biology10.27
Chad M. Eliason9
Estimated H-index: 9
(FMNH: Field Museum of Natural History),
Michael J. Andersen12
Estimated H-index: 12
(UNM: University of New Mexico),
Shannon J. Hackett26
Estimated H-index: 26
(FMNH: Field Museum of Natural History)
Published on Jul 11, 2019in bioRxiv
Lara Busby (University of Sheffield), Christina Aceituno (UC: University of Cantabria)+ 3 AuthorsMatthew Towers10
Estimated H-index: 10
(University of Sheffield)
Flight is a triumph of evolution that enabled the radiation and success of birds. A crucial step was the development of forelimb flight feathers that may have evolved for courtship or territorial displays in ancestral theropod dinosaurs. Classical tissue recombination experiments performed in the chick embryo provide evidence that signals operating during early limb development specify the position and identity of feathers. Here we show that a positional information gradient of Sonic hedgehog (S...
Xiaoshan Wu2
Estimated H-index: 2
(SC: University of Southern California),
Chao-Yuan Yeh2
Estimated H-index: 2
(SC: University of Southern California)
+ 5 AuthorsCheng-Ming Chuong61
Estimated H-index: 61
(SC: University of Southern California)
Networked structures integrate numerous elements into one functional unit, while providing a balance between efficiency, robustness, and flexibility. Understanding how biological networks self-assemble will provide insights into how these features arise. Here, we demonstrate how nature forms exquisite muscle networks that can repair, regenerate, and adapt to external perturbations using the feather muscle network in chicken embryos as a paradigm. The self-assembled muscle networks arise through ...
Published on 2019in The Journal of Experimental Biology3.02
Chi-Chih Wu1
Estimated H-index: 1
(Uppsala University),
Axel Klaesson5
Estimated H-index: 5
(Uppsala University)
+ 4 AuthorsJochen B. W. Wolf32
Estimated H-index: 32
(LMU: Ludwig Maximilian University of Munich)
Functional validation of candidate genes involved in adaptation and speciation remains challenging. We here exemplify the utility of a method quantifying individual mRNA transcripts in revealing the molecular basis of divergence in feather pigment synthesis during early-stage speciation in crows. Using a padlock probe assay combined with rolling circle amplification, we quantified cell type specific gene expression in the histological context of growing feather follicles. Expression of Tyrosinas...
Published on Jan 4, 2019in bioRxiv
Xinlei Wang1
Estimated H-index: 1
(Henan Agricultural University),
Donghua Li3
Estimated H-index: 3
(Henan Agricultural University)
+ 15 AuthorsYawei Fu (Henan Agricultural University)
Abstract Background Coloration is one of the most recognizable characteristics in chickens, and clarifying the coloration mechanisms will help us understand feather color formation. “Yufen I” is an commercial egg-laying chicken breed in China, that was developed by a three-line cross using lines H, N and D. Columbian plumage is a typical feather character of the “Yufen I” H line. In order to understand the molecular mechanism underlying pigmentation of Columbian plumage, this study utilizes high...
View next paperEvo-Devo of feathers and scales: building complex epithelial appendages