There was only really 1 large herbivore,Udanoceratops and multiple carnivores
The ones in charge were probably Citipati and Sinornithoides(Sino is the large animal beside UDANOCHADTOPS and Citipati is the guy in front of Minotaurosaurus)
Ironically Kol is the largest named theropod there at 100 Kgs,Sino was about 80 and Citipati was about 85.But Kol was an Alverezsaur.Ironically Velociraptor is shown as this Protoceratops slaying,apex predator of the Djdochta Formation when it’s really small lol.(It’s the smallest animal behind Haltzkaraptor)
I wonder how all those animals survived in the same area?