duck-billed dinosaur

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duck-billed dinosaur

[¦dək ‚bild ′dīn·ə‚sȯr]
(paleontology)
Any of several herbivorous, bipedal ornithopods having the front of the mouth widened to form a ducklike beak.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
The discovery of a solid crest outside the major radiation of hadrosaurids supports the hypothesis that all crests derived from a common ancestor that had a simple humped nose.
The main group of hadrosaurids called Saurolophidae commonly sported a bony cranial crests of varying shapes and sizes, but the Aquilarhinus, which is more primitive than the Saurolophidae, had a simpler a bony crest shaped like a humped nose. 
"This new animal is one of the more primitive hadrosaurids known and can therefore help us to understand how and why the ornamentation on their heads evolved, as well as where the group initially evolved and migrated from," Prieto-Marquez (https://phys.org/news/2019-07-strange-species-duck-billed-dinosaur.html) said . 
Although only a single hadrosaurid vertebra was found on Axel Heiberg Island, it may nonetheless represent additional support for year-round residence of dinosaurs at high latitudes.
Marine and terrestrial palynomorphs found in a sample collected 8 m above the hadrosaurid vertebra.
Hadrosaurid migration: Inferences based on stable isotope comparisons among Late Cretaceous dinosaur localities.
Ce fossile suggere que de gros dinosaures hadrosaurides auraient pu habiter une grande masse terrestre insulaire polaire pendant le Cretace tardif, oil ils auraient evolue a l'annee, etant incapables de migrer vers les regions plus au sud pendant l'hiver.
This would make specimen MPZ2013/365 the smallest nonhatchling hadrosaurid humerus reported in Europe to date, comparable in size to that of a juvenile Parasaurolophus from North America of approximately 25% of its adult body length (Farke et al., 2013).
In summary, the osteologic and histological studies suggest that the small hadrosaurid bones from the sites of Serraduy del Pon and Beranuy pertain to individuals that almost reached total somatic maturity (i.e., final adult size).
At present, various latest Cretaceous localities in Europe have yielded a diverse fauna composed of small hadrosaurid taxa (T.
(2014): A new hadrosaurid dentary from the latest Maastrichtian of the Pyrenees (north Spain) and the high diversity of the duck-billed dinosaurs of the Ibero-Armorican Realm at the very end of the Cretaceous.
(2015): Presence of diminutive hadrosaurids (Dinosauria: Ornithopoda) in the Maastrichtian of the south-central Pyrenees (Spain).