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Summary
| Description |
English:
Overview of stratigraphic, temporal, and biogeographic distribution of Late Cretaceous (upper Campanian–upper Maastrichtian) ankylosaurid dinosaurs, including Akainacephalus johnsoni, across northern Laramidian (Alberta, Montana, Wyoming), and southern Laramidian (Utah, New Mexico) basins. Noticeable is the higher number of taxa and more widespread distribution of ankylosaurids in northern Laramidia. Colored bars within stratigraphic formations represent ankylosaurid taxa and their respective temporal range. Paleogeographic map modified after Sampson et al. (2010). Stratigraphic intervals modified after Arbour & Currie (2013a); Roberts et al. (2013); Johnson, Nichols & Hartman (2002).
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| Date | |
| Source | https://peerj.com/articles/5016/#intro |
| Author | Jelle P. Wiersma, Randall B. Irmis |
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