Results 71 to 80 of about 116 (91)

The Palatal Structure of some Canadian Hadrosauridae (Reptilia: Ornithischia): Reply

Canadian Journal of Earth Sciences, 1973
Two distinct hadrosaurian lineages can be delineated, each showing changes from possible hypsilophodont ancestors. The Hadrosaurinae are typified by moderately vaulted palates, broad pterygoid flanges, large anterior maxillary processes, and non-folded premaxillae, with direct narial passages.
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Duck-bill dinosaurs (Hadrosauridae, Ornithischia) from the North Slope of Alaska

Journal of Paleontology, 1987
Hadrosaur Bones have been found on the Colville River north of Umiat on the North Slope of Alaska. This find represents the first report of dinosaur bones in Alaska and their northernmost reported occurrence. The remains are not determinable below family level but are important, nonetheless, for interpretations of the paleoclimatology and ...
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Nipponosaurus sachalinensis(Dinosauria; Ornithopoda): anatomy and systematic position within Hadrosauridae

Journal of Vertebrate Paleontology, 2004
The hadrosaurid Nipponosaurus sachalinensis Nagao, 1936, was the first dinosaur discovered in Japan. Here we establish its ontogenetic stage, diagnostic characters, and systematic position by redescribing and phylogenetically analyzing the type and sole specimen of Nipponosaurus.
Daisuke Suzuki, David B. Weishampel, Nachio Minoura   +2 more
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A NORTHERN OCCURRENCE OF HYPACROSAURUS ALTISPINUS (DINOSAURIA: HADROSAURIDAE), WITH DISCUSSIONS ON GENERIC MONOPHYLY AND HYPODIGM CONSTRUCTION

Canadian Journal of Earth Sciences
While the Late Cretaceous dinosaur faunas of southern and northern Alberta, Canada, are well studied, comparable faunas of central Alberta are more poorly known. Herein is described a new occurrence of the lambeosaurine hadrosaurid Hypacrosaurus altispinus from the Horseshoe Canyon Formation in Leduc, Alberta.
Henry Sharpe, Caleb Marshall Brown
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The braincase and skull roof ofGryposaurus notabilis(Dinosauria, Hadrosauridae), with a taxonomic revision of the genus

Journal of Vertebrate Paleontology, 2010
ABSTRACT The facial and neurocranial anatomy of AMNH 5350, containing the most complete braincase available for Gryposaurus, is described in detail. The specimen, collected from Late Campanian outcrops of the Dinosaur Park Formation of southern Canada, is referred to G.
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An ontogenetic perspective on locomotion in the Late Cretaceous dinosaurMaiasaura peeblesorum(Ornithischia: Hadrosauridae)

Canadian Journal of Earth Sciences, 2001
Ontogenetic growth in the forelimb and hindlimb of the dinosaur Maiasaura peeblesorum (Ornithischia: Hadrosauridae) from the Upper Cretaceous (Campanian-Maastrichtian) Two Medicine Formation of Montana is investigated by multivariate and bivariate morphometrics and the biomechanics of beam theory.
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First occurrence of Maiasaura (Dinosauria, Hadrosauridae) from the Upper Cretaceous Oldman Formation of southern Alberta, Canada

Canadian Journal of Earth Sciences, 2021
David Evans, Hillary Maddin, Michael J Ryan   +2 more
exaly  

A new ‘duck-billed’ dinosaur (Ornithischia: Hadrosauridae) from the upper Campanian of Texas points to a greater diversity of early hadrosaurid offshoots

Cretaceous Research, 2023
Albert Prieto-Marquez, Jonathan R Wagner   +1 more
exaly  

Cranial variation in Gryposaurus and biostratigraphy of hadrosaurines (Ornithischia: Hadrosauridae) from the Dinosaur Park Formation of Alberta, Canada

Canadian Journal of Earth Sciences, 2020
David Evans, Talia Lowi-Merri
exaly  

Cranial anatomy and variation inProsaurolophus maximus(Dinosauria: Hadrosauridae)

Zoological Journal of the Linnean Society, 2013
Christopher T. McGarrity, Nicolas E. Campione, David C. Evans   +2 more
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