I've not baked one of these but, perhaps, you could use bamboo skewers (only high quality & splinter free) or metal skewers to keep the dinos together and upright.
One end of the skewer would have to protrude from the cake on one side so that, after being baked and cooled, you could carefully remove the skewers from the cake.
For Cinta or anyone else helping with ideas, here is the original recipe:
http://peasandpeonies.com/2016...