... dataset of fifty tibiae from the hadrosaurid dinosaur Maiasaura. In addition to LAGs, unusual cortical rings resulting ... the tibiae, but not investigated further. The fifty Maiasaura tibiae from that study were histologically reexamined here ... other extinct taxa. This assessment reveals that the Maiasaura LVC is comprised of one or more laminae ... only found prior to the first LAG in Maiasaura. However, LVC frequency is variable, ranging from specimens ... likely do not have an annual periodicity in Maiasaura. Instead, LVCs may signal times of temporary but ...
Tópico(s): Ichthyology and Marine Biology
2019 - Frontiers Media | Frontiers in Earth Science
Holly N. Woodward, Elizabeth A. Freedman Fowler, James O. Farlow, John R. Horner,
... sample of 50 tibiae of the hadrosaurid dinosaur Maiasaura peeblesorum allows predictions of annual growth and ecological ... level apposition rate of 86.4 μm/day, Maiasaura achieved over half of asymptotic tibia diaphyseal circumference ... was highest. During the third year of life, Maiasaura attained 36% (x=1260 kg) of asymptotic body ... 44.4%. Compared with Alligator , an extant relative, Maiasaura exhibits rapid cortical increase early in ontogeny, while ... protracted throughout ontogeny. Our life history synthesis of Maiasaura utilizes the largest histological sample size for any ...
Tópico(s): Amphibian and Reptile Biology
2015 - Cambridge University Press | Paleobiology
John R. Horner, Armand de Ricqlès, Kevin Padian,
ABSTRACT Ontogenetic changes in the bone histology of Maiasaura peeblesorum are revealed by six relatively distinct but ... placement of LAGs, these patterns suggest that young Maiasaura nestlings grew at very high rates, and at ... and inferred growth rates of the bones of Maiasaura are completely different from those of living non- ... they show these histological patterns. We conclude that Maiasaura did not grow at all like living non- ...
Tópico(s): Optical measurement and interference techniques
2000 - Taylor & Francis | Journal of Vertebrate Paleontology
Bradley McFeeters, David C. Evans, Michael J. Ryan, Hillary C. Maddin,
... southern Alberta, as the first diagnostic occurrence of Maiasaura in Canada. This material was collected in the ... Coronosaurus brinkmani. The assignment of this specimen to Maiasaura, rather than to Brachylophosaurus, is supported by the ... contact at adult size. The occurrence of both Maiasaura and Brachylophosaurus in approximately similar-aged deposits of ... of Maiasaurini. Geographically, the more western distribution of Maiasaura localities with respect to all Brachylophosaurus localities is ...
Tópico(s): Ichthyology and Marine Biology
2020 - NRC Research Press | Canadian Journal of Earth Sciences
... and thus following Steinberg's classification of hadrosaurs, Maiasaura is placed into the subfamily Hadrosaurinae. Western North ... but terminated during transgressive periods. Dinosaurs such as Maiasaura, endemic to "upland" environments and unaffected by the ...
Tópico(s): Amphibian and Reptile Biology
1983 - Taylor & Francis | Journal of Vertebrate Paleontology
... pelvic appendages and girdles of adult and nestling Maiasaura peeblesorum (Dinosauria: Ornithischia: Hadrosauridae) from the Late Cretaceous ... several muscles can be found in nestlings of Maiasaura despite their skeletal immaturity. Results of the phylogenetically ...
Tópico(s): Ichthyology and Marine Biology
1999 - Cambridge University Press | Transactions of the Royal Society of Edinburgh Earth Sciences
Bradley McFeeters, David C. Evans, Hillary C. Maddin,
Five new partial skulls of the hadrosaurid dinosaur Maiasaura peeblesorum from the Linster Quarry bone bed (Two ... facial nerve (CN VII).Although cranial ontogeny in Maiasaura shares some trends with Brachylophosaurus and Probrachylophosaurus, it ...
Tópico(s): Ichthyology and Marine Biology
2021 - Institute of Paleobiology | Acta Palaeontologica Polonica
... juveniles, eggs, and nesting sites of the hadrosaur Maiasaura peeblesorum and the hypsilophodontid Orodromeus makelai from the ... or survival strategies in hatchling dinosaurs until the Maiasaura and Orodromeus findings. These recent discoveries have generated ...
Tópico(s): Amphibian and Reptile Biology
1990 - Cambridge University Press | Journal of Paleontology
... be assigned to Orodromeus makelai, a hypsilophodontid, and Maiasaura peeblesorum, a hadrosaurid based on embryonic remains and ... than Campanian, the structural morphotypes described for Orodromeus, Maiasaura, and ?Troodon also dominate here. In addition, an ...
Tópico(s): Avian ecology and behavior
1990 - Taylor & Francis | Journal of Vertebrate Paleontology
... hadrosaurid, Hypacrosaurus ; and two hadrosaurine hadrosaurids, Brachylophosaurus and Maiasaura to test the hypothesis. The event‐pairing method ... hadrosaurid Hypacrosaurus compared to the hadrosaurines Brachylophosaurus and Maiasaura . Anat Rec, 292:1427–1441, 2009. © 2009 Wiley‐ ...
Tópico(s): Ichthyology and Marine Biology
2009 - Wiley | The Anatomical Record
Karen Chin, Joseph H. Hartman, Barry Roth,
... this locality, including isolated skeletal discoveries, an extensive Maiasaura bone bed (Schmitt et al. 1998), eggshell and ... mostly whole. Furthermore, the coprolite producers were probably Maiasaura hadrosaurs (Chin 2007) which bore densely packed dental ...
Tópico(s): Mollusks and Parasites Studies
2008 - Wiley | Lethaia
Terry A. Gates, John R. Horner, Rebecca R. Hanna, C. Riley Nelson,
... which along with its other members, Brachylophosaurus and Maiasaura, constitutes the earliest hadrosaurine hadrosaurid clade. The new ... Acristavus possesses traits seen in both Brachylophosaurus and Maiasaura, but not necessarily shared between them. One of ...
Tópico(s): Optical measurement and interference techniques
2011 - Taylor & Francis | Journal of Vertebrate Paleontology
... in the forelimb and hindlimb of the dinosaur Maiasaura peeblesorum (Ornithischia: Hadrosauridae) from the Upper Cretaceous (Campanian- ...
Tópico(s): Amphibian and Reptile Biology
2001 - NRC Research Press | Canadian Journal of Earth Sciences
Jorge Cubo, Holly N. Woodward, Ewan Wolff, John R. Horner,
... sample of fifty specimens of the herbivorous dinosaur Maiasaura peeblesorum (Ornithopoda: Hadrosaurinae) exhibit exostoses. We show that ... age. These results reinforce myological evidence suggesting that Maiasaura underwent an ontogenetic shift from the primitive ornithischian ...
Tópico(s): Veterinary Orthopedics and Neurology
2015 - Public Library of Science | PLoS ONE
Albert Prieto‐Márquez, Merrilee F. Guenther,
... a dozen skeletons referable to the saurolophine hadrosaurid Maiasaura peeblesorum , but never fully figured or described. Here, ...
Tópico(s): Optical measurement and interference techniques
2018 - PeerJ, Inc. | PeerJ
Andrew T. McDonald, Douglas G. Wolfe, Elizabeth A. Freedman Fowler, Terry A. Gates,
... Alberta, including abundant material of Brachylophosaurus canadensis and Maiasaura peeblesorum and the holotypes of Acristavus gagslarsoni and ... in a trichotomy with Probrachylophosaurus and Brachylophosaurus , with Maiasaura and Acristavus as successive outgroups.
Tópico(s): Evolution and Paleontology Studies
2021 - PeerJ, Inc. | PeerJ
... Freedman Fowler, James O. Farlow, John R. Horner Maiasaura , a model organism for extinct vertebrate population biology: ...
Tópico(s): Animal Ecology and Behavior Studies
1935 - University of Chicago Press | The Quarterly Review of Biology
John R. Horner, Armand de Ricqlès, Kevin Padian, Rodney D. Scheetz,
... those of other dinosaurs, notably hadrosaurids such as Maiasaura and Hypacrosaurus. Orodromeus is a small dinosaur, and ...
Tópico(s): Ichthyology and Marine Biology
2009 - Taylor & Francis | Journal of Vertebrate Paleontology
Anthony J. Martin, David J. Varricchio,
... formosus and Continuoolithus, but not with those of Maiasaura peeblesorum, perhaps indicative of subtle nesting site preferences.
Tópico(s): Evolution and Paleontology Studies
2010 - Taylor & Francis | Historical Biology
... rostrum (reconstructed as independently derived in Brachylophosaurus canadensis, Maiasaura peeblesorum, and Edmontosaurus annectens).
Tópico(s): Bone Tumor Diagnosis and Treatments
2010 - Q15088586 | Zootaxa
... that the source animals at one site were Maiasaura hadrosaurs. The wood-bearing coprolites occur in strata ...
Tópico(s): Scarabaeidae Beetle Taxonomy and Biogeography
2007 - Society for Sedimentary Geology | Palaios
Terry A. Gates, Scott D. Sampson,
... within a monophyletic clade that includes Brachylophosaurus and Maiasaura. Gryposaurus monumentensis represents the most southern example of ...
Tópico(s): Ichthyology and Marine Biology
2007 - Oxford University Press | Zoological Journal of the Linnean Society
David J. Varricchio, John R. Horner,
... adults, perhaps dwelling in strictly juvenile groups. In Maiasaura peeblesorum, reproduction appears to have been synchronous among ...
Tópico(s): Paleontology and Evolutionary Biology
1993 - NRC Research Press | Canadian Journal of Earth Sciences
Jason S. Adams, Christopher L. Organ,
... metaplasia of ossified tendons in two hadrosaurine dinosaurs (Maiasaura peeblesorum and Brachylophosaurus canadensis) are described by comparison ...
Tópico(s): Ichthyology and Marine Biology
2005 - Taylor & Francis | Journal of Vertebrate Paleontology
... supports Brachylophosaurus canadensis as the sister taxon to Maiasaura peeblesorum, and suggests that the two taxa form ...
Tópico(s): Evolution and Paleontology Studies
2005 - Taylor & Francis | Journal of Vertebrate Paleontology
Elizabeth A. Freedman Fowler, John R. Horner,
... projecting posteriorly over the dorsal skull roof; and Maiasaura peeblesorum, which possesses a dorsally-projecting nasofrontal crest. ...
Tópico(s): Evolution and Paleontology Studies
2015 - Public Library of Science | PLoS ONE
Bo Zhao, Brandon P. Hedrick, Gao Chunling, Allison R. Tumarkin‐Deratzian, Fengjiao Zhang, Caizhi Shen, Peter Dodson,
... rate similar to Orodromeus, slower than that of Maiasaura, Dysalotosaurus, or hadrosaurs consistent with small body size. ...
Tópico(s): Ichthyology and Marine Biology
2016 - Wiley | The Anatomical Record
Masaki Matsukawa, Martin G. Lockley, Adrian P. Hunt,
... ornithopod growth curves of the type proposed for Maiasaura are established, there is considerable potential for estimating ...
Tópico(s): Evolution and Paleontology Studies
1999 - Elsevier BV | Palaeogeography Palaeoclimatology Palaeoecology
Xufeng Zhu, Qiang Wang, Xiaolin Wang,
... is a synonym of Stromatoolithus pinglingensis. Eggs of Maiasaura, Spheroolithus albertensis from North America and Spheroolithus europaeus ...
Tópico(s): Ichthyology and Marine Biology
2021 - Taylor & Francis | Historical Biology
... of the theropods Staurikosaurus and Tyrannosaurus, the ornithischian Maiasaura, and extant crocodilians and birds. The results indicate ...
Tópico(s): Ichthyology and Marine Biology
2021 - Wiley | Journal of Anatomy