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Electron backscatter diffraction (EBSD) analysis of maniraptoran eggshells with important implications for microstructural and taphonomic interpretations

Published on Sep 1, 2019in Palaeontology2.632
· DOI :10.1111/pala.12427
Seung Choi3
Estimated H-index: 3
(SNU: Seoul National University),
Seokyoung Han3
Estimated H-index: 3
(SNU: Seoul National University),
Yuong-Nam Lee14
Estimated H-index: 14
(SNU: Seoul National University)
Abstract
  • References (137)
  • Citations (3)
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References137
Newest
#1Mariela S. Fernández (CONICET: National Scientific and Technical Research Council)H-Index: 8
#2Leonardo Salgado (CONICET: National Scientific and Technical Research Council)H-Index: 29
ABSTRACTWe report the youngest fossil egg of avian affinities from the Cretaceous (Allen Formation, Campanian-Maastrichtian) of Patagonia, Argentina. The fossil consists in most of the internal cast of a single egg, preserving some eggshell fragments on one of its poles. Its axes are 4.5 cm and 3.06 cm. The eggshell surface is smooth, and its thickness average is 400 µm. The eggshell has two layers, with an ornithoid basic type and a ratite morphotype. The well-developed mammillary layer is 154 ...
3 CitationsSource
#1Pavel P. Skutschas (SPbU: Saint Petersburg State University)H-Index: 13
Last. Alexander O. Averianov (RAS: Russian Academy of Sciences)H-Index: 24
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AbstractThe Lower Cretaceous Ilek Formation in Western Siberia (Russia) has yielded various vertebrate fossils, including skeletal remains of dinosaurs. Here we report on a fragmentary theropod egg from the vertebrate locality Shestakovo 3 of the Ilek Formation in Kemerovo Province. We assign the specimen to the oogenus Prismatoolithus (oofamily Prismatoolithidae) as Prismatoolithus ilekensis oosp. nov., on the basis of the following unique combination of characters: ovoid-shaped egg; thin eggsh...
4 CitationsSource
#1Jessie Atterholt (Western University of Health Sciences)H-Index: 4
#2J. Howard Hutchison (University of California, Berkeley)H-Index: 18
Last. Jingmai K. O’Connor (CAS: Chinese Academy of Sciences)H-Index: 26
view all 3 authors...
3 CitationsSource
#1Yannicke Dauphin (CNRS: Centre national de la recherche scientifique)H-Index: 35
#2Gilles Luquet (University of Paris)H-Index: 3
Last. Murielle Salomé (European Synchrotron Radiation Facility)H-Index: 31
view all 4 authors...
ABSTRACTAvian eggshells are composed of several layers made of organic compounds and a mineral phase (calcite), and the general structure is basically the same in all species. A comparison of the structure, crystallography, and chemical composition shows that despite an overall similarity, each species has its own structure, crystallinity, and composition. Eggshells are a perfect example of the crystallographic versus biological concept of the formation and growth mechanisms of calcareous biomin...
6 CitationsSource
#1Frankie D. Jackson (MSU: Montana State University)H-Index: 20
#2Wenjie ZhengH-Index: 1
Last. Xingsheng Jin (AMNH: American Museum of Natural History)H-Index: 7
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Abstract The close association of osteological remains and fossil eggs sometimes leads to misinterpretations, particularly in the absence of adequate taphonomic data. A clutch of 15 fossil eggs from the Upper Cretaceous Xiaguan Formation, Henan Province, China occurs in close association to a partial skeleton of the neoceratopsian, Mosaiceratops azumai. Two centimeters of sediment separate several eggs on the edge of the clutch from the rostrum of the skull. However, preservation of aragonite cr...
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#1James Hansford (NOCS: National Oceanography Centre, Southampton)H-Index: 5
#2Samuel T. Turvey (ZSL: Zoological Society of London)H-Index: 24
Madagascar9s now-extinct radiation of large-bodied ratites, the elephant birds (Aepyornithidae), has been subject to little modern research compared to the island9s mammalian megafauna and other Late Quaternary giant birds. The family9s convoluted and conflicting taxonomic history has hindered accurate interpretation of morphological diversity and has restricted modern research into their evolutionary history, biogeography and ecology. We present a new quantitative analysis of patterns of morpho...
5 CitationsSource
#1David J. Varricchio (MSU: Montana State University)H-Index: 28
#2Martin Kundrát (University of Pavol Jozef Šafárik)H-Index: 12
Last. Jason Hogan (MSU: Montana State University)H-Index: 1
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Non-avian dinosaurs such as oviraptorosaurs and troodontids share several important reproductive characters with modern birds, including eggshell microstructure and iterative egg production. Nevertheless, debate exists concerning their incubation strategies. Here we estimate incubation period for the troodontid, Troodon formosus, by examining a near-term embryonic tooth. Synchrotron scanning and histologic thin sections allowed counting of daily (von Ebner) growth lines. The tooth preserves 31 i...
4 CitationsSource
#1Seung Choi (SNU: Seoul National University)H-Index: 3
#2Seokyoung Han (SNU: Seoul National University)H-Index: 3
Last. Yuong-Nam Lee (SNU: Seoul National University)H-Index: 14
view all 4 authors...
The Gekkota is an important clade in the evolution of calcified eggshells in that some of its families lay rigid eggshells like archosaurs. However, the fundamental differences and similarities between the mechanism of rigid eggshell formation of the Gekkota and Archosauria have not been investigated thoroughly due to the lack of knowledge of gekkotan eggshells. Here, we report for the first time a comprehensive analysis of morphological, chemical compositional, and crystallographic features of ...
3 CitationsSource
#1Kohei Tanaka (Japan Society for the Promotion of Science)H-Index: 1
#2Darla K. Zelenitsky (U of C: University of Calgary)H-Index: 15
Last. Rongjun ChenH-Index: 1
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Most birds sit on their eggs during incubation, a behaviour that likely evolved among non-avian dinosaurs. Several ‘brooding9 specimens of smaller species of oviraptorosaurs and troodontids reveal these non-avian theropods sat on their eggs, although little is known of incubation behaviour in larger theropod species. Here we examine egg clutches over a large body size range of oviraptorosaurs in order to understand the potential effect of body size on incubation behaviour. Eggshell porosity indi...
1 CitationsSource
#1A. Bravo (CSIC: Spanish National Research Council)H-Index: 5
#2Paloma Sevilla (Complutense University of Madrid)H-Index: 9
Last. Fernando Barroso-Barcenilla (Complutense University of Madrid)H-Index: 10
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The new upper Barremian microfossil site of Vadillos-1 (Lower Cretaceous, Beteta Gorges, Cuenca province, Spain) has yielded a rich fossil assemblage consisting of numerous eggshell fragments along with diverse skeletal remains of fishes, amphibians, turtles, crocodyliforms and dinosaurs. Crocodilian eggshells constitute the main fraction of the eggshell assemblage which includes abundant material belonging to the oofamily Krokolithidae, as well as a new type of crocodilian eggshells (Neokrokoli...
1 CitationsSource
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#1Hongyu SunH-Index: 1
Last. Erik C. GarnettH-Index: 25
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Recently, the application of electron backscatter diffraction (EBSD) in halide perovskites has enabled the correlation of the micro‐structural arrangement of polycrystalline grains with other properties (optical, electrical, mechanical, and chemical) in a “pixel‐by‐pixel” approach. Most studies so far have used an ultra‐sensitive electron beam detector that has sensitivity thousands of times higher than a traditional scintillator screen and charge coupled device camera, enabling much lower beam ...
Source
#1Seung Hong Choi (SNU: Seoul National University)H-Index: 44
#2Sung Keun Lee (SNU: Seoul National University)H-Index: 30
Last. Yuong-Nam Lee (SNU: Seoul National University)H-Index: 14
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Raman spectroscopy has been widely used in micropalaeontology and organic geochemistry to identify carbonaceous materials and evaluate their thermal maturity in fossils or metasedimentary rocks. Meanwhile, fossil egg researches have mostly focused on biomineralized calcite, but preserved carbonaceous (or possibly organic) materials inside the eggshells have been usually neglected until recently. Here we report an enigmatic egg from the Wido Volcanics (Upper Cretaceous) of South Korea that was an...
Source
#1Seung Hong Choi (SNU: Seoul National University)H-Index: 44
#2Miguel Moreno-Azanza (NOVA: Universidade Nova de Lisboa)H-Index: 11
Last. Yuong-Nam Lee (SNU: Seoul National University)H-Index: 14
view all 5 authors...
1 CitationsSource
#1Seung Choi (SNU: Seoul National University)H-Index: 3
#2Yuong-Nam Lee (SNU: Seoul National University)H-Index: 14
Abstract Among non-avian maniraptoran eggshells, oofamilies Prismatoolithidae and Elongatoolithidae are usually associated with troodontid and oviraptorosaur dinosaurs, respectively. However, dromaeosaurid eggshells are poorly known so far except for one possible Deinonychus egg associated with the gastralia of Deinonychus. Since then, some Deinonychus eggshell-like non-prismatoolithid and non-elongatoolithid maniraptoran eggshells have been reported including oogenera Reticuloolithus and Montan...
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#1Xufeng Zhu (CAS: Chinese Academy of Sciences)H-Index: 1
#2Kaiyong Fang (China University of Geosciences)
Last. Xuri Wang (Ontario Ministry of Natural Resources)
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ABSTRACTThis study describes a new member of Similifaveoloolithidae from the Upper Cretaceous Zhoutian Formation of Jiangxi, China. The new ootaxon, Wormoolithus luxiensis oogen. et oosp. nov., is ...
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#1Noe-Heon Kim (SNU: Seoul National University)H-Index: 2
#2Seung Choi (SNU: Seoul National University)H-Index: 3
Last. Yuong-Nam Lee (SNU: Seoul National University)H-Index: 14
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Abstract The Cretaceous oofamily Faveoloolithidae has a unique shell unit and pore canal system that clearly differs from most of the extant and fossil eggshells. Despite its distinctiveness, morphological (micro- and ultrastructural) and crystallographic features of the Faveoloolithidae are poorly known. Here we report a new faveoloolithid nesting ground from the Upper Cretaceous siltstones within the Daeri Andesite of the Wido Volcanics (Coniacian–Santonian), South Korea. Forty-one of the same...
2 CitationsSource