Which Alberta formation is cited for comparison when mapping out the evolutionary spread of horned dinosaurs across the continent?
Answer
Judith River Formation
To help map the overall evolutionary spread of horned dinosaurs across North America, paleontological discussions often involve comparisons between specimens found in different geological layers across the continent. Specifically, the Judith River Formation found in Alberta is referenced in conjunction with *Xenoceratops*'s habitat in the Hell Creek Formation. These comparisons highlight similarities and differences between contemporary or near-contemporary genera, illustrating how interconnected yet geographically segmented dinosaur populations might have been during the later epochs of the Cretaceous.
Related Questions
What geological region in Saskatchewan hosts the *Xenoceratops ornatus* fossil evidence?Which specific geological unit within the Hell Creek Formation contains *Xenoceratops* fossils?Approximately how many million years ago did *Xenoceratops* live based on the Last Chance Member dating?In what year was *Xenoceratops ornatus* officially described by Ryan Schott and Donald Brinkman?The *Xenoceratops* find in the Last Chance Member predates which famous ceratopsian associated with the uppermost Hell Creek deposits?To which major dinosaur family does *Xenoceratops* belong based on its horned, frilled head structure?In which North American country was the primary fossil evidence for *Xenoceratops ornatus* unearthed?Which Alberta formation is cited for comparison when mapping out the evolutionary spread of horned dinosaurs across the continent?What primary element do paleontologists prioritize when discussing the 'location' of a dinosaur like *Xenoceratops*?What key evolutionary implication arises from *Xenoceratops* being found in the older Last Chance Member rather than uppermost Hell Creek strata?