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Mark A. Norell
American Museum of Natural History
Publications 224
Published on Jan 1, 2019in eLife 7.62
Evan T. Saitta1
Estimated H-index: 1
R Liang + 16 AuthorsGeoffrey D. Abbott22
Estimated H-index: 22
Published on Jun 1, 2019in Nature 41.58
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Published on May 23, 2019in Integrative and Comparative Biology 2.75
R N Felice (UCL: University College London), A Watanabe (New York Institute of Technology College of Osteopathic Medicine)+ 6 AuthorsAnjali Goswami30
Estimated H-index: 30
(Natural History Museum)
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Published on Mar 1, 2019in Journal of Anatomy 2.48
Akinobu Watanabe5
Estimated H-index: 5
Paul M. Gignac (Oklahoma State University Center for Health Sciences)+ 3 AuthorsMark A. Norell57
Estimated H-index: 57
(AMNH: American Museum of Natural History)
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Published on Dec 1, 2018in Nature Communications 12.35
Jingmai K. O’Connor9
Estimated H-index: 9
(CAS: Chinese Academy of Sciences),
Gregory M. Erickson33
Estimated H-index: 33
(FSU: Florida State University)
+ 3 AuthorsZHOUZhonghe47
Estimated H-index: 47
(CAS: Chinese Academy of Sciences)
Medullary bone is an ephemeral type of bone tissue, today found only in sexually mature female birds, that provides a calcium reservoir for eggshell formation. The presence of medullary bone-like tissues in extant birds, pterosaurs, and dinosaurs distantly related to birds shows that caution must be exercised before concluding that fossils bear medullary bone. Here we describe a new specimen of pengornithid enantiornithine from the Lower Cretaceous Jiufotang Formation. Consisting of an isolated ...
2 Citations Source Cite
Published on Dec 1, 2018in Nature Communications 12.35
Jasmina Wiemann3
Estimated H-index: 3
(Yale University),
Matteo Fabbri5
Estimated H-index: 5
(Yale University)
+ 4 AuthorsDerek E. G. Briggs62
Estimated H-index: 62
(Yale University)
Vertebrate hard tissues consist of mineral crystallites within a proteinaceous scaffold that normally degrades post-mortem. Here we show, however, that decalcification of Mesozoic hard tissues preserved in oxidative settings releases brownish stained extracellular matrix, cells, blood vessels, and nerve projections. Raman Microspectroscopy shows that these fossil soft tissues are a product of diagenetic transformation to Advanced Glycoxidation and Lipoxidation End Products, a class of N-heterocy...
5 Citations Source Cite
Published on Dec 1, 2018in Palaeoworld 1.09
Hongyu Yi1
Estimated H-index: 1
(CAS: Chinese Academy of Sciences),
Mark A. Norell57
Estimated H-index: 57
(AMNH: American Museum of Natural History)
Abstract Mosasaurs were among the last marine reptiles that lived before the Cretacesous–Paleogene extinction. Little is known about the sensory evolution of mosasaurs in relation to their aquatic lifestyle. In this study, the braincase of Platecarpus was CT-scanned and virtual models were constructed showing the bony labyrinth — or the inner ear — a sensory apparatus for balance and hearing. The virtual inner ear consists of the semicircular canals, vestibule, and cochlea. Compared with extant ...
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Published on Nov 1, 2018in Organic Geochemistry 2.81
Evan T. Saitta4
Estimated H-index: 4
(UoB: University of Bristol),
Ian Fletcher (Northumbria University)+ 8 AuthorsKirsty Penkman28
Estimated H-index: 28
(Ebor: University of York)
Abstract White fibers from a Late Cretaceous dinosaur Shuvuuia deserti stained positive for β-keratin antibodies in a 1999 paper, followed by many similar immunological claims for Mesozoic protein in bones and integument. Antibodies recognize protein epitopes derived from its tertiary and quaternary structure, so such results would suggest long polypeptide preservation allowing for sequencing with palaeobiological implications. However, proteins are relatively unstable biomacromolecules that rea...
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