Dana uses a trip to the grocery story with Grandma to conduct Dino Experiment 621: What did the Stygimoloch use the spikes on its head for? /While Dad helps Saara practice karate, Dana studies which carnivore can get past the sturdy armour...See moreDana uses a trip to the grocery story with Grandma to conduct Dino Experiment 621: What did the Stygimoloch use the spikes on its head for? /While Dad helps Saara practice karate, Dana studies which carnivore can get past the sturdy armour of the Euoplocephalus.
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