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

Published on May 17, 2019in Palaeontology2.63
· DOI :10.1111/pala.12427
Seung Im Choi3
Estimated H-index: 3
(SNU: Seoul National University),
Seung Ho Choi18
Estimated H-index: 18
(SNU: Seoul National University)
+ 0 AuthorsYuong-Nam Lee14
Estimated H-index: 14
(SNU: Seoul National University)
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  • References (138)
  • Citations (1)
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References138
Newest
Published on Nov 5, 2017in Historical Biology1.49
Pavel P. Skutschas13
Estimated H-index: 13
(SPbU: Saint Petersburg State University),
Valentina D. Markova1
Estimated H-index: 1
+ 4 AuthorsAlexander O. Averianov23
Estimated H-index: 23
(RAS: Russian Academy of Sciences)
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...
Published on Dec 1, 2018in Scientific Reports4.01
David J. Varricchio28
Estimated H-index: 28
(MSU: Montana State University),
Martin Kundrát11
Estimated H-index: 11
(University of Pavol Jozef Šafárik),
Jason Hogan1
Estimated H-index: 1
(MSU: Montana State University)
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...
Published on Dec 1, 2018in Scientific Reports4.01
Kohei Tanaka1
Estimated H-index: 1
(Japan Society for the Promotion of Science),
Darla K. Zelenitsky15
Estimated H-index: 15
(U of C: University of Calgary)
+ 1 AuthorsYoshitsugu Kobayashi15
Estimated H-index: 15
(Hokkaido University)
Dinosaurs thrived and reproduced in various regions worldwide, including the Arctic. In order to understand their nesting in diverse or extreme environments, the relationships between nests, nesting environments, and incubation methods in extant archosaurs were investigated. Statistical analyses reveal that species of extant covered nesters (i.e., crocodylians and megapodes) preferentially select specific sediments/substrates as a function of their nesting style and incubation heat sources. Rela...
Published on Nov 13, 2018in PeerJ2.35
Jessie Atterholt4
Estimated H-index: 4
(Western University of Health Sciences),
J. Howard Hutchison16
Estimated H-index: 16
(University of California, Berkeley),
Jingmai K. O’Connor9
Estimated H-index: 9
(CAS: Chinese Academy of Sciences)
Published on Nov 8, 2018in Connective Tissue Research2.17
Yannicke Dauphin6
Estimated H-index: 6
(CNRS: Centre national de la recherche scientifique),
Gilles Luquet3
Estimated H-index: 3
(University of Paris)
+ 1 AuthorsMurielle Salomé29
Estimated H-index: 29
(European Synchrotron Radiation Facility)
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...
Published on Nov 1, 2018in Cretaceous Research2.12
Frankie D. Jackson19
Estimated H-index: 19
(MSU: Montana State University),
Wenjie Zheng1
Estimated H-index: 1
+ 2 AuthorsXingsheng Jin6
Estimated H-index: 6
(AMNH: American Museum of Natural History)
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 c...
Published on Sep 1, 2018in Royal Society Open Science2.52
James Hansford4
Estimated H-index: 4
(NOCS: National Oceanography Centre, Southampton),
Samuel T. Turvey23
Estimated H-index: 23
(ZSL: Zoological Society of London)
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...
Published on Jun 22, 2018in PLOS ONE2.78
Seung Im Choi3
Estimated H-index: 3
(SNU: Seoul National University),
Seung Ho Choi18
Estimated H-index: 18
(SNU: Seoul National University)
+ 1 AuthorsYuong-Nam Lee14
Estimated H-index: 14
(SNU: Seoul National University)
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 ...
Published on Jun 3, 2018in Historical Biology1.49
Mariela Soledad Fernández8
Estimated H-index: 8
(CONICET: National Scientific and Technical Research Council),
Leonardo Salgado27
Estimated H-index: 27
(CONICET: National Scientific and Technical Research Council)
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 ...
Published on May 1, 2018in Biology Letters3.32
Kohei Tanaka1
Estimated H-index: 1
(Japan Society for the Promotion of Science),
Darla K. Zelenitsky15
Estimated H-index: 15
(U of C: University of Calgary)
+ 8 AuthorsCaizhi Shen1
Estimated H-index: 1
(AMNH: American Museum of Natural History)
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...
Cited By1
Newest
Published on Jun 1, 2019in Cretaceous Research2.12
Seung Im Choi3
Estimated H-index: 3
(SNU: Seoul National University),
Yuong-Nam Lee14
Estimated H-index: 14
(SNU: Seoul National University)
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 Monta...
Published on Aug 29, 2019in Historical Biology1.49
Xufeng Zhu (CAS: Chinese Academy of Sciences), Kaiyong Fang (CAS: Chinese Academy of Sciences)+ 5 AuthorsXuri Wang (Ontario Ministry of Natural Resources)
This 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 erected based on eggs collected from a partial clutch and represents the second oogenera of Similifaveoloolithidae. Wormoolithus shares some unique features with Similifaveoloolithus such as irregularly branched eggshell units, irregular cavities in the inner part of eggshell that are worm-like in tangential v...
Published on Aug 1, 2019in Cretaceous Research2.12
Noe-Heon Kim1
Estimated H-index: 1
(SNU: Seoul National University),
Seung Im Choi3
Estimated H-index: 3
(SNU: Seoul National University)
+ 1 AuthorsYuong-Nam Lee14
Estimated H-index: 14
(SNU: Seoul National University)
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...
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