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Zhiheng Li
Chinese Academy of Sciences
19Publications
8H-index
243Citations
Publications 23
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The avian predentary is a small skeletal structure located rostral to the paired dentaries found only in Mesozoic ornithuromorphs. The evolution and function of this enigmatic element is unknown. Skeletal tissues forming the predentary and the lower jaws in the basal ornithuromorph Yanornis martini are identified using computed-tomography, scanning electron microscopy, and histology. On the basis of these data, we propose hypotheses for the development, structure, and function of this element. T...
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#1Han Hu (UNE: University of New England (United States))H-Index: 1
#2Gabriele Sansalone (UNE: University of New England (United States))H-Index: 6
Last.ZHOUZhonghe (CAS: Chinese Academy of Sciences)H-Index: 47
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Most living birds exhibit cranial kinesis—movement between the rostrum and braincase—in which force is transferred through the palatal and jugal bars. The palate alone distinguishes the Paleognathae from the Neognathae, with cranial kinesis more developed in neognaths. Most previous palatal studies were based on 2D data and rarely incorporated data from stem birds despite great interest in their kinetic abilities. Here we reconstruct the vomer of the Early Cretaceous stem bird Sapeornis and the ...
1 CitationsSource
#1Yaser Saffar Talori (THU: Tsinghua University)H-Index: 1
#2Jing-Shan Zhao (THU: Tsinghua University)H-Index: 1
Last.Jingmai K. O’Connor (CAS: Chinese Academy of Sciences)H-Index: 26
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The origin of avian flight is one of the most controversial debates in Paleontology. This paper investigates the wing performance of Caudipteryx, the most basal non-volant dinosaur with pennaceous feathered forelimbs by using modal effective mass theory. From a mechanical standpoint, the forced vibrations excited by hindlimb locomotion stimulate the movement of wings, creating a flapping-like motion in response. This shows that the origin of the avian flight stroke should lie in a completely nat...
1 CitationsSource
#1Yanhong Pan (CAS: Chinese Academy of Sciences)H-Index: 13
#2Wenxia Zheng (NCSU: North Carolina State University)H-Index: 11
Last.Mary H. Schweitzer (NCSU: North Carolina State University)H-Index: 25
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Dinosaur fossils possessing integumentary appendages of various morphologies, interpreted as feathers, have greatly enhanced our understanding of the evolutionary link between birds and dinosaurs, as well as the origins of feathers and avian flight. In extant birds, the unique expression and amino acid composition of proteins in mature feathers have been shown to determine their biomechanical properties, such as hardness, resilience, and plasticity. Here, we provide molecular and ultrastructural...
8 CitationsSource
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#1Zhiheng Li (CAS: Chinese Academy of Sciences)H-Index: 8
#2Julia A. Clarke (University of Texas at Austin)H-Index: 28
Last.ZHOUZhonghe (CAS: Chinese Academy of Sciences)H-Index: 47
view all 6 authors...
Modifications to the upper vocal tract involving hyper-elongated tracheae have evolved many times within crown birds, and their evolution has been linked to a ‘size exaggeration’ hypothesis in acoustic signaling and communication, whereby smaller-sized birds can produce louder sounds. A fossil skeleton of a new extinct species of wildfowl (Galliformes: Phasianidae) from the late Miocene of China, preserves an elongated, coiled trachea that represents the oldest fossil record of this vocal modifi...
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#1Yaser Saffar Talori (THU: Tsinghua University)H-Index: 1
#2Yun-Fei Liu (THU: Tsinghua University)H-Index: 1
Last.Zhiheng Li (CAS: Chinese Academy of Sciences)H-Index: 8
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Pennaceous feathers capable of forming aerodynamic surfaces are characteristic of Pennaraptora, the group comprising birds and their closest relatives among non-avian dinosaurs. However, members of the basal pennaraptoran lineage Oviraptorosauria were clearly flightless, and the function of pennaceous feathers on the forelimb in oviraptorosaurs is still uncertain. In the basal oviraptorosaur Caudipteryx both the skeleton and the plumage, which includes pennaceous feathers forming wing-like arran...
1 CitationsSource
#1Zhiheng Li (CAS: Chinese Academy of Sciences)H-Index: 8
#2Fei Yan (Rice University)H-Index: 8
Last.Julia A. Clarke (University of Texas at Austin)H-Index: 28
view all 5 authors...
Abstract Iodine staining combined with X-ray computed tomography (CT) has become a core approach in anatomy, offering three-dimensional and essentially non-destructive imaging of soft tissues. Although there have been rapid advances in methodologies and techniques, the mechanisms underlying diffusible iodine contrast-enhanced CT are not yet fully understood. The protocols for staining samples of differing sizes and tissue types have not yet been justified theoretically. Here we utilize mass tran...
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