Keine direkten, das basiert teilweise auf Straußen, aber auch die Anatomie der Hadrosaurier spielt hier eine Rolle, das Teil muss halt lang genug sein um die Kloake des Weibchens zu erreichen, ich hab mich hier noch zurück gehalten.

Olorotitan, just after mating, the male proofed to be a little too heavy for the dorsal spines of the female.

For people who know the Wiki page of the Judith River Formation you will notice that Zuul is missing from here, that's because we chose the middle member. The lower Oldman Formation is basically the same around this time, so its in here too. Size chart by Montana

For one the Deinosuchus mother defending her nest and on the other the side the many ceratopsians from Judith. We can't show them all but you get the idea ;)
Also, because the fauna is similar to Dinosaur Park I wanted to go with quite a different mood.