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.
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).