@Kakapo I would like to mention that the sign underneath this was labelled. 'Pteranodon inges'. Just clarifying any possible confusion that I identified this myself.
I think that it's a clear example of label swichting. They have two models, one of Pteranodon ingens and other of Tropeognathus and they put each one the label of the other. I've seen that in two French museums three times: in La Rochelle, Vestiaria coccinea and Hemignathus ellisianus with switched labels, and in Nantes, Desmana moschata swichted with Galemys pyrenaicus and Tragopan melanocephala swichted with something else (an himalayan monal if I remember well).
