By the end of the Cretaceous period - a chunk of time that lasted from around 145 to 66 million years ago, plenty of dinosaur lineages had gone extinct. The general biodiversity of dinosaurs and the other weird critters they lived with had been shaken up many times. The hadrosaurs were the most common large-bodied herbivorous animals across much of the world. Titanosaurian sauropods were the only things bigger but were much more common in the southern hemisphere. The ceratopsians, or horned dinosaurs, were also among the most diverse and common animals worldwide throughout the Cretaceous period. Their near ubiquity means that learning more about them also means learning more about the changes in biodiversity of terrestrial ecosystems over time and how stable certain ecologies were over deep time, leading up to the space-rock impact.
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Ishikawa, H., Tsuihiji, T., Manabe, M., Furcatoceratops elucidans, a new centrosaurine (Ornithischia: Ceratopsidae) from the upper Campanian Judith River Formation, Montana, USA., Cretaceous Research, doi.org/10.101....
Maltese, A. (2015, September 6). Avaceratops articles from 2012-2015. RMDRC Paleo lab - What's Going on in the RMDRC's Back Room. Retrieved March 29, 2024, from rmdrc.blogspot...
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25 авг 2024