Zobrazeno 1 - 10
of 285
pro vyhledávání: '"MARK A. NORELL"'
Autor:
CECILIA E. CALVERT, TYLER C. HUNT, NIALL S. WHALEN, JONAH N. CHOINIERE, MARK A. NORELL, GREGORY M. ERICKSON
Publikováno v:
Acta Palaeontologica Polonica, Vol 68, Iss 4, Pp 603-612 (2023)
Among non-avian dinosaurs, Heterodontosaurus tucki is unique for possessing complex dental features including both morphological and proportional heterodonty, sub-hypsodonty, tooth occlusion, and extensive low-angled wear facets—a collection of der
Externí odkaz:
https://doaj.org/article/519d2813008d47df96d8708f519be009
Publikováno v:
Communications Biology, Vol 6, Iss 1, Pp 1-6 (2023)
The earliest larynx discovered in fossil dinosaurs indicates that non-avian dinosaurs may have had bird-like vocalization.
Externí odkaz:
https://doaj.org/article/1ee1d8c244e74a9e9d4501e972a2b020
Publikováno v:
Scientific Reports, Vol 12, Iss 1, Pp 1-14 (2022)
Abstract Intraspecific variation in growth trajectories provides a fundamental source of variation upon which natural selection acts. Recent work hints that early dinosaurs possessed elevated levels of such variation compared to other archosaurs, but
Externí odkaz:
https://doaj.org/article/9ebf568b7c49435d90a8078b2a6eddcf
Autor:
Jinlong Huang, Yi Zhong, Alvin P. Makohon-Moore, Travis White, Maria Jasin, Mark A. Norell, Ward C. Wheeler, Christine A. Iacobuzio-Donahue
Publikováno v:
Cell Reports, Vol 39, Iss 5, Pp 110771- (2022)
Summary: We performed a comparative analysis of human and 12 non-human primates to identify sequence variations in known cancer genes. We identified 395 human-specific fixed non-silent substitutions that emerged during evolution of human. Using bioin
Externí odkaz:
https://doaj.org/article/ea9a3d028d344fb7a83f8ff806b9eb82
Autor:
Albert Prieto‐Márquez, Joan Garcia‐Porta, Shantanu H. Joshi, Mark A. Norell, Peter J. Makovicky
Publikováno v:
Ecology and Evolution, Vol 10, Iss 13, Pp 6288-6309 (2020)
Abstract The fossil record provides compelling examples of heterochrony at macroevolutionary scales such as the peramorphic giant antlers of the Irish elk. Heterochrony has also been invoked in the evolution of the distinctive cranial frill of cerato
Externí odkaz:
https://doaj.org/article/ef57db4439d54db094ae7787e328805d
Autor:
Jasmina Wiemann, Matteo Fabbri, Tzu-Ruei Yang, Koen Stein, P. Martin Sander, Mark A. Norell, Derek E. G. Briggs
Publikováno v:
Nature Communications, Vol 9, Iss 1, Pp 1-9 (2018)
Recent studies have reported preservation of proteinaceous soft tissues within dinosaur bones. Here, Wiemann et al. combine analyses of fossil vertebrate tissues and experimentally matured modern samples to elucidate the mechanism of soft tissue pres
Externí odkaz:
https://doaj.org/article/ffad4d73b6e5436a8d09c077330f19c2
Publikováno v:
Frontiers in Behavioral Neuroscience, Vol 12 (2018)
Brain-behavior studies using 18F-FDG PET aim to reveal brain regions that become active during behavior. In standard protocols, 18F-FDG is injected, the behavior is executed during 30–60 min of tracer uptake, and then the animal is anesthetized and
Externí odkaz:
https://doaj.org/article/f99c7d393bcc4cddade929de3486c60d
Autor:
Gabriel S. Bever, Mark A. Norell
Publikováno v:
Royal Society Open Science, Vol 4, Iss 11 (2017)
A new rhynchocephalian is described based on a recently discovered and well-preserved specimen from the Late Jurassic (Kimmeridgian) marine limestones of Solnhofen, Bavaria. Phylogenetic analysis recovers the new taxon as the sister group to Pleurosa
Externí odkaz:
https://doaj.org/article/7ce6669323be443aa24ba05652b65cbe
Autor:
Mark A. Norell, Jasmina Wiemann, Iris Menéndez, Matteo Fabbri, Congyu Yu, Claudia A. Marsicano, Anita Moore-Nall, David J. Varricchio, Diego Pol, Darla K. Zelenitsky
Publikováno v:
Nature. 610:E11-E14
In the accompanying Comment, Choi et al. dispute morphological, histological, geochemical and biomechanical evidence for a soft-shelled egg in Mussaurus, an Early Jurassic sauropodomorph, based on three main assertions, namely that: (1) the carbonate
Autor:
Christopher T. Griffin, João F. Botelho, Michael Hanson, Matteo Fabbri, Daniel Smith-Paredes, Ryan M. Carney, Mark A. Norell, Shiro Egawa, Stephen M. Gatesy, Timothy B. Rowe, Ruth M. Elsey, Sterling J. Nesbitt, Bhart-Anjan S. Bhullar
Publikováno v:
Nature. 608:346-352