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Luis M. Chiappe
Natural History Museum of Los Angeles County
191Publications
45H-index
5,648Citations
Publications 191
Newest
Published on Jan 30, 2019in Scientific Reports 4.12
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. ...
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Published on Mar 1, 2019in Cretaceous Research 1.93
Di Liu5
Estimated H-index: 5
(AMNH: American Museum of Natural History),
Luis M. Chiappe45
Estimated H-index: 45
(Natural History Museum of Los Angeles County)
+ 2 AuthorsQingjin Meng14
Estimated H-index: 14
(AMNH: American Museum of Natural History)
We describe two nearly complete enantiornithine skeletons from the Lower Cretaceous Huajiying Formation (ca. 130.7 Ma) of northern Hebei province, China. Many morphological features indicate that these specimens represent a new taxon, here named Orienantius ritteri gen. et sp.. nov. The new fossils preserve their plumage as well as rare information about their soft tissues, including the wing’s patagia. Multivariate analyses of their skeleton and flight feathers provide insight into the aerodyna...
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Published on Jan 1, 2019in Gondwana Research 5.66
Francisco Serrano3
Estimated H-index: 3
(UMA: University of Málaga),
Luis M. Chiappe45
Estimated H-index: 45
(Natural History Museum of Los Angeles County)
+ 3 AuthorsJosé Luis Sanz29
Estimated H-index: 29
(UAM: Autonomous University of Madrid)
Abstract Atmospheric conditions are critical for a range of biological functions—locomotion among others—and long-term changes in these conditions have been identified as causal for different macroevolutionary patterns. Here we examine the influence of variations in atmospheric O 2 concentration ( AOC ), temperature ( T air ), and air density ( ρ air ) on the power efficiency, as it relates to locomotion, during the evolutionary history of birds. Specifically, our study centers on four key evolu...
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Published on Dec 1, 2018in Scientific Reports 4.12
Dana Rashid2
Estimated H-index: 2
(MSU: Montana State University),
Kevin Surya (MSU: Montana State University)+ 7 AuthorsJohn R. Horner41
Estimated H-index: 41
(MSU: Montana State University)
The avian tail played a critical role in the evolutionary transition from long- to short-tailed birds, yet its ontogeny in extant birds has largely been ignored. This deficit has hampered efforts to effectively identify intermediate species during the Mesozoic transition to short tails. Here we show that fusion of distal vertebrae into the pygostyle structure does not occur in extant birds until near skeletal maturity, and mineralization of vertebral processes also occurs long after hatching. Ev...
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Published on Dec 1, 2018in Nature Communications 12.35
Fabien Knoll15
Estimated H-index: 15
(University of Manchester),
Luis M. Chiappe45
Estimated H-index: 45
(Natural History Museum of Los Angeles County)
+ 11 AuthorsFrancisco Serrano3
Estimated H-index: 3
(UMA: University of Málaga)
Fossils of juvenile Mesozoic birds provide insight into the early evolution of avian development, however such fossils are rare. The analysis of the ossification sequence in these early-branching birds has the potential to address important questions about their comparative developmental biology and to help understand their morphological evolution and ecological differentiation. Here we report on an early juvenile enantiornithine specimen from the Early Cretaceous of Europe, which sheds new ligh...
3 Citations Source Cite
Published on May 1, 2018in Palaeontology 3.73
Francisco Serrano3
Estimated H-index: 3
(UMA: University of Málaga),
Luis M. Chiappe45
Estimated H-index: 45
(Natural History Museum of Los Angeles County)
+ 3 AuthorsJosé Luis Sanz29
Estimated H-index: 29
(UAM: Autonomous University of Madrid)
Intermittent flight through flap-gliding (alternating flapping phases and gliding phases with spread wings) or bounding (flapping and ballistic phases with wings folded against the body) are strategies to optimize aerial efficiency which are commonly used among small birds today. The broad morphological disparity of Mesozoic birds suggests that a range of aerial strategies could have evolved early in avian evolution. Based on biomechanics and aerodynamic theory, this study reconstructs the fligh...
1 Citations Source Cite
Published on Feb 1, 2018in Chinese Science Bulletin
Lida Xing18
Estimated H-index: 18
(China University of Geosciences),
Jingmai K. O'Connor22
Estimated H-index: 22
(CAS: Chinese Academy of Sciences)
+ 7 AuthorsLIGang16
Estimated H-index: 16
(CAS: Chinese Academy of Sciences)
Abstract Cretaceous amber from Myanmar (∼99 Ma Burmese amber) has become a valuable supplement to the traditional skeletal record of small theropod dinosaurs preserved in sedimentary rocks, particularly for coelurosaurs and enantiornithines. The specimens recovered from this deposit preserve skeletal material and soft tissues in unmatched detail. This provides opportunities to study three-dimensional preservation of soft tissues, microstructure, and pigmentation patterns that are seldom availabl...
3 Citations Source Cite
Published on Feb 1, 2018in Journal of Asian Earth Sciences 2.87
Guillermo Navalón2
Estimated H-index: 2
(UoB: University of Bristol),
Qingjin Meng14
Estimated H-index: 14
(AMNH: American Museum of Natural History)
+ 5 AuthorsLuis M. Chiappe45
Estimated H-index: 45
(Natural History Museum of Los Angeles County)
Abstract The Huajiying Formation contains the earliest deposits of the Jehol Biota, representing the world’s second oldest avifauna. This avifauna includes the early confuciusornithid Eoconfuciusornis zhengi , the oldest occurrence of this clade and one of the earliest divergences of pygostylian birds. Although E. zhengi shows unique traits, the holotype’s immature age makes comparisons with the better known Confuciusornis sanctus problematic. As a result, the taxonomic validity of E. zhengi is ...
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Published on Jan 1, 2018in Palaeogeography, Palaeoclimatology, Palaeoecology 2.38
Alyssa Bell5
Estimated H-index: 5
(Natural History Museum of Los Angeles County),
Yun-Hsin Wu (SC: University of Southern California), Luis M. Chiappe45
Estimated H-index: 45
(Natural History Museum of Los Angeles County)
Abstract The Cretaceous Hesperornithiformes are an extinct group of aquatic birds long recognized to have practiced foot-propelled diving. This specialization is seen today in a number of modern avian families (loons, grebes, cormorants, and some ducks) that have convergently derived a diving lifestyle. Historically, hesperornithiforms have usually been compared to modern loons and grebes as analogues. However, these comparisons are based on qualitative observations of skeletal morphology and ha...
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