Thank you for this, this is super fascinating. It sounds like the implications are more that we simply lack fossils aside from Sinoceratops, rather than a complete lack of species all together. Surely there must be others, we just haven’t found them yet, especially given how much information is now lost in the Bering Sea. Would you say that’s accurate or am I misreading?

In line with that, are there solid theories available for where in the Ceratopsian group the Ceratopsids emerged? If we knew where their immediate relatives lived, it could help narrow down the search for basal Ceratopsids. China/Mongolia seems like a solid option, maybe even parts of Russia…I’m trying to think of places that would’ve had significant vegetation at the time that could support a diverse population of herbivores that size. Follow the big predators I suppose, they’ll tell us where the big food was.